Digital SAT Reading: Core Grammar Rules Master Guide

Introduction to SAT Grammar Rules

Standard English Conventions questions are a cornerstone of the Digital SAT Reading and Writing section, representing approximately \(26%\) of the entire verbal exam. Across your two test modules, you will face \(11\) to \(15\) questions testing your knowledge of English grammar, punctuation, and sentence structure.

These questions are grouped together in the middle of each module, preceding the Expression of Ideas (transitions and rhetorical synthesis) questions. Unlike reading comprehension questions, which require deep interpretation of tone and authorial intent, grammar questions are governed by rigid, objective rules. There is no room for subjective interpretation: a sentence structure is either grammatically correct or it is not.

Because of this mechanical nature, mastering sat grammar rules is one of the fastest ways to raise your Reading and Writing score. With a strong grasp of the rules detailed in this guide, you can confidently answer grammar questions in under \(20\) to \(30\) seconds each, banking substantial time to tackle the tougher reading passages.

This master guide covers every grammar target tested on the SAT, providing rule explanations, standard error patterns, punctuation tables, sentence-boundary strategies, and practice drills.

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Master Punctuation Reference Tables

Punctuation rules represent the most commonly tested subcategory under Standard English Conventions. Use these reference tables to memorize the specific grammatical roles of each punctuation mark.

1. Commas (\(,\))

Commas are the most versatile—and most frequently tested—punctuation marks on the SAT.

Comma Rule	Grammatical Explanation	Correct Example	SAT Trap Pattern
Separating Items in a List	Use commas to separate three or more items in a list, including the Oxford comma before “and.”	The study analyzed soil, water, and air quality.	The study analyzed soil, water and air quality.
Introductory Phrases	Set off introductory dependent clauses or phrases at the beginning of a sentence.	Although it was raining, the team collected soil samples.	Although it was raining the team collected soil samples.
Non-Essential Clauses	Use a pair of commas to set off parenthetical, non-essential information (appositives).	Dr. Arndt, a renowned botanist, led the expedition.	Dr. Arndt, a renowned botanist led the expedition.
Coordinating Conjunctions	Use a comma before a FANBOYS conjunction to join two independent clauses.	The experiment failed, but the scientists gained useful data.	The experiment failed but the scientists gained useful data.

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2. Semicolons (\(;\)), Colons (\(:\)), and Em-Dashes (\(—\))

These punctuation marks are used to join clauses and emphasize information.

Punctuation Mark	Grammatical Role	Correct Example	SAT Trap Pattern
Semicolon (\(;\))	Joins two independent clauses without a conjunction. Acts exactly like a period.	The dataset was corrupted; the analysis was delayed.	The dataset was corrupted; which delayed the analysis. (Semicolon before dependent clause)
Colon (\(:\))	Must follow a complete independent clause. Introduces a list, explanation, or definition.	The researcher had one goal: to isolate the active enzyme.	The researcher’s goal was: to isolate the active enzyme. (Colon after an incomplete clause)
Double Em-Dash (\(—\))	Sets off non-essential, parenthetical clauses. Must match as a pair (dash-dash or comma-comma).	The artifact—discovered in \(1922\)—remains in perfect condition.	The artifact—discovered in \(1922\), remains in perfect condition. (Mixing dash and comma)
Single Em-Dash (\(—\))	Follows an independent clause to introduce an explanation, definition, or shift (acts like a colon).	The team faced a major obstacle—a total lack of funding.	The team faced—a major obstacle, a total lack of funding.

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3. Apostrophes (\(’\))

Apostrophes are tested exclusively for possessive nouns and contractions.

Noun Type	Grammatical Role	Singular Form	Plural Form
Singular Noun	Shows possession by a single entity. Add ‘s.	The scientist’s lab (one scientist)	N/A
Regular Plural Noun	Shows possession by multiple entities. Add ’ after the s.	N/A	The scientists’ lab (multiple scientists)
Irregular Plural Noun	Shows possession by plural nouns that do not end in s. Add ‘s.	N/A	The children’s museum / The people’s choice
Possessive Pronoun	Shows possession. Never uses an apostrophe.	its, their, whose, ours, yours	theirs
Contraction	Replaces missing letters in combined words. Uses an apostrophe.	it’s (it is), they’re (they are), who’s (who is)	N/A

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Sentence-Boundary Strategy

The most common punctuation error tested on the SAT is the sentence-boundary error. These questions test your ability to distinguish between independent clauses (complete thoughts that can stand alone as sentences) and dependent clauses (incomplete thoughts that rely on an independent clause).

1. Identifying Clauses

• Independent Clause (IC): Contains a subject and a verb and expresses a complete thought.
  • Example: “The telescope detected a distant exoplanet.”
• Dependent Clause (DC): Contains a subject and a verb but starts with a subordinating conjunction (e.g., because, although, since, while, if), making it an incomplete thought.
  • Example: “Because the telescope detected a distant exoplanet.”

2. The Three Common Sentence-Boundary Errors

• Run-on Sentence: Two independent clauses joined with no punctuation.
  • Incorrect: IC IC (e.g., “The telescope detected an exoplanet it orbits a red dwarf.”)
• Comma Splice: Two independent clauses joined with only a comma.
  • Incorrect: IC, IC (e.g., “The telescope detected an exoplanet, it orbits a red dwarf.”)
• Sentence Fragment: A dependent clause or phrase punctuated as a complete sentence.
  • Incorrect: DC. (e.g., “Because the telescope detected a distant exoplanet.”)

3. The Five Ways to Connect Independent Clauses

On the SAT, you can legally connect two independent clauses using only these five structures:

Method 1: Independent clause. Independent clause.
Method 2: Independent clause; independent clause.
Method 3: Independent clause, [FANBOYS] independent clause.
Method 4: Independent clause: independent clause (if the second explains the first).
Method 5: Independent clause; transition adverb, independent clause.

• FANBOYS: For, And, Nor, But, Or, Yet, So.
• Transition Adverbs: however, therefore, consequently, moreover, furthermore, thus.

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Subject-Verb Agreement

A verb must always agree in grammatical number (singular or plural) with its subject. If the subject is singular, the verb must be singular. If the subject is plural, the verb must be plural.

1. Singular vs. Plural Verbs

• Nouns: Add an s to become plural (scientist \(\rightarrow\) scientists).
• Verbs: Add an s to become singular (runs \(\rightarrow\) run).
  • Singular Subject + Singular Verb: “The scientist runs the experiment.”
  • Plural Subject + Plural Verb: “The scientists run the experiment.”

2. The Intervening Phrase Trap

The SAT will never place a subject directly next to its verb in an agreement question. Instead, it will insert a long prepositional phrase or dependent clause between them to trick your ear.

• Trap Example: “The discovery of several ancient clay tablets inscribed with cuneiform script were celebrated by the historians.”
• Analysis: Cross out the intervening prepositional phrase (of several ancient clay tablets inscribed with cuneiform script). The true subject is discovery (singular). Therefore, the verb must be was (singular), not were.
• Corrected: “The discovery […] was celebrated by the historians.”

3. Collective Nouns

Collective nouns refer to groups of individuals but are grammatically singular.

• Common Collective Nouns: team, committee, family, group, audience, class, corporation, nation, agency, public.
• Correct: “The research team is presenting its findings today.”
• Incorrect: “The research team are presenting their findings today.”

4. Indefinite Pronouns

Indefinite pronouns refer to non-specific people or things. The following indefinite pronouns are always singular:

• each, every, everyone, everybody, everything, anyone, anybody, anything, someone, somebody, something, no one, nobody, nothing, either, neither.
• Correct: “Each of the biological specimens has been categorized.”
• Incorrect: “Each of the biological specimens have been categorized.”

5. Compound Subjects (And vs. Or / Nor)

• Subjects joined by and are always plural.
  • Correct: “The geologist and the paleontologist are analyzing the fossil.”
• Subjects joined by or or nor must agree with the noun closest to the verb.
  • Correct: “Neither the professor nor her students are attending the lecture.”
  • Correct: “Neither the students nor the professor is attending the lecture.”

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Pronoun Agreement and Reference

Pronoun questions test whether pronouns match their antecedents (the nouns they replace) in number and case, and whether their reference is clear.

1. Pronoun-Antecedent Agreement

A pronoun must match the singular or plural nature of its antecedent.

• Incorrect: “Because the satellite exceeded its lifespan, they were decommissioned.”
• Correct: “Because the satellite exceeded its lifespan, it was decommissioned.”

2. Pronoun Case: Subject vs. Object

• Subject Pronouns (I, he, she, they, we, who) perform the action.
• Object Pronouns (me, him, her, them, us, whom) receive the action.
• Tip for compound cases: If the sentence features a compound pronoun (e.g., Dr. Lin and I/me), temporarily remove the other person to test your ear.
  • Test: “The university awarded funding to [Dr. Lin and] me.” (You would say “awarded funding to me,” not “awarded funding to I”).
  • Correct: “The university awarded funding to Dr. Lin and me.”

3. The Ambiguous Pronoun Trap

A pronoun is incorrect if it could refer to more than one noun in the sentence.

• Incorrect: “When the car crashed into the concrete barrier, it was completely destroyed.”
• Analysis: What was destroyed? The car or the barrier? The pronoun it is ambiguous.
• Corrected: “When the car crashed into the concrete barrier, the vehicle was completely destroyed.”

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Modifiers, Parallelism, and Comparisons

1. Modifier Placement (Dangling and Misplaced Modifiers)

A modifying phrase at the start of a sentence must describe the noun immediately following the comma. If it describes any other noun, it is a dangling modifier.

• Trap Example: “Having analyzed the DNA fragments, the prehistoric lineage was mapped by the geneticists.”
• Analysis: Who analyzed the DNA fragments? The prehistoric lineage did not analyze the DNA; the geneticists did. The noun immediately following the comma must be geneticists.
• Corrected: “Having analyzed the DNA fragments, the geneticists mapped the prehistoric lineage.”

2. Parallel Structure

Items in lists, comparisons, or correlative pairs must share the same grammatical form (e.g., all nouns, all gerunds, or all infinitive verbs).

• Incorrect: “The job duties include drafting reports, attending meetings, and to supervise junior researchers.”
• Correct: “The job duties include drafting reports, attending meetings, and supervising junior researchers.”

3. Logical Comparisons

You can only compare items of the same category. Comparing a person to a thing, or a singular noun to a plural category, is logically flawed.

• Incorrect: “Unlike the poetry of Emily Dickinson, Walt Whitman wrote long, sprawling lines.”
• Analysis: This sentence compares Dickinson’s poetry (a thing) to Walt Whitman (a person). You must compare poetry to poetry or poet to poet.
• Corrected: “Unlike Emily Dickinson, Walt Whitman wrote long, sprawling lines.”
• Corrected: “Unlike the poetry of Emily Dickinson, that of Walt Whitman features long, sprawling lines.”
• Singular comparison replacement: Use that of (e.g., “the climate of Spain is warmer than that of England”).
• Plural comparison replacement: Use those of (e.g., “the feathers of eagles are denser than those of robins”).

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Verb Tense, Aspect, and Mood

Verb questions require you to choose the correct tense based on context clues within the passage.

1. Tense Consistency

Unless there is a clear logical reason to shift tenses, keep the verbs consistent throughout the passage. Look at surrounding sentences to establish the baseline tense (past, present, or future).

• Example: “The geologist walked to the ridge, set up the seismograph, and takes a reading.”
• Analysis: Walked and set are in the past tense. The verb takes must also be in the past tense (took) to maintain consistency.
• Corrected: “The geologist walked […], set up […], and took a reading.”

2. The Literary Present Tense

When a passage discusses a work of art, literature, or a scientific publication, the SAT uses the present tense to describe the actions occurring within that work.

• Correct: “In her \(1818\) novel Frankenstein, Mary Shelley creates a scientist who regrets his creation.”
• Incorrect: “In her \(1818\) novel Frankenstein, Mary Shelley created a scientist who regrets his creation.”

3. Past Perfect Tense (Had + Past Participle)

Use the past perfect tense (had walked, had discovered) only when describing an action that was completed before another past action described in the sentence.

• Correct: “By the time the search team arrived at the site, the archeologists had already uncovered the burial chamber.”

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Relative Pronouns Deep Dive

Relative pronouns introduce relative clauses, which provide extra information about a noun. The SAT strictly regulates which relative pronouns can refer to which categories of nouns.

1. Relative Pronoun Rules

• Who / Whom: Must refer only to people.
  • Correct: “The researcher who discovered the compound…”
• Which: Must refer only to things or animals. It is used for non-essential clauses (separated by commas).
  • Correct: “The compound, which was discovered in \(1998\), is highly toxic.”
• That: Must refer only to things or animals. It is used for essential clauses (no commas).
  • Correct: “The compound that was discovered in \(1998\) is highly toxic.”
• Where: Must refer only to physical, geographic places.
  • Correct: “The laboratory where the experiment was conducted…”
  • Incorrect: “The agreement where both nations signed…” (An agreement is not a physical place; use ‘in which’ or ‘under which’).
• When: Must refer only to times or events.
  • Correct: “The decade when the research peaked…“

2. Who vs. Whom

• Who is a subject pronoun. It is used when the pronoun represents the entity performing the action in the relative clause.
  • Test: Replace the pronoun with he or they. If it makes sense, use who.
  • Example: “The astronomer who observed the star…” (He observed the star, so who is correct).
• Whom is an object pronoun. It is used when the pronoun represents the entity receiving the action in the relative clause.
  • Test: Replace the pronoun with him or them. If it makes sense, use whom.
  • Example: “The artist to whom the award was presented…” (The award was presented to him, so whom is correct).

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Prepositional Idioms

The SAT tests your knowledge of idiomatic preposition usage—standard English phrases that pair specific verbs, adjectives, or nouns with specific prepositions. These are not governed by standard logical rules; they are based on common usage conventions.

Correct Idiom	Contextual Example	Incorrect Trap Form
Associated with	The decline in bird populations is associated with habitat loss.	Associated to
Capable of	The bacteria are capable of degrading plastic polymers.	Capable to
Comply with	The factory failed to comply with environmental standards.	Comply to
Different from	The molecular structure of compound A is different from compound B.	Different than
Succeed in	The research team succeeded in isolating the active enzyme.	Succeed to / Succeed at
Protest against	The activists gathered to protest against the land development.	Protest on
Tolerant of	The plant species is highly tolerant of drought conditions.	Tolerant to
Inconsistent with	The experimental results are inconsistent with the hypothesis.	Inconsistent to

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Redundancy and Concision (Wordiness)

One of the core style guidelines tested under Standard English Conventions is concision. The College Board values writing that is clear, direct, and free of unnecessary words.

1. Eliminating Redundancy

Redundancy occurs when a sentence repeats the same information twice using different words. The SAT will frequently put redundant phrasing in the answer choices.

• Incorrect: “The migration count of the monarchs occurs annually every year.”
• Analysis: Annually means every year. Repeating both is redundant.
• Corrected: “The migration count of the monarchs occurs annually.”
• Common SAT Redundancies to Avoid:
  • advance warning ahead of time \(\rightarrow\) advance warning or warning ahead of time
  • currently at present \(\rightarrow\) currently or at present
  • collaborated together \(\rightarrow\) collaborated
  • shrunk in size \(\rightarrow\) shrunk
  • basic essentials \(\rightarrow\) essentials
  • unexpected surprise \(\rightarrow\) surprise

2. Choosing the Shortest, Most Direct Option

When multiple answer choices are grammatically correct and convey the same meaning, the shortest choice is almost always the correct answer. Avoid choices that add passive voice, unnecessary prepositional phrases, or convoluted structures.

• Convoluted (Incorrect): “The identification of the fossil was done by the researcher who made the discovery of the skeleton.”
• Concise (Correct): “The researcher identified the fossil skeleton.”

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10 Worked Examples with Explanations

Review these ten original worked examples to see how SAT grammar rules are applied under real testing conditions.

Worked Example 1

While conducting excavation trials at the ancient ruins of Chan Chan in Peru, archeologists uncovered several clay vessels, ______ a unique double-chambered structure designed to produce whistling sounds when water was poured.

• A) each exhibiting
• B) they all exhibit
• C) which exhibits
• D) and exhibiting

Explanation

1. Analyze the Sentence: The main clause is “archeologists uncovered several clay vessels.” This is an independent clause. The information following the comma describes the vessels (plural).
2. Evaluate the Choices:
   • A) each exhibiting: Correct. This creates a grammatically correct modifier phrase describing the plural vessels. Each is singular, which fits with the singular appositive noun phrase “a unique double-chambered structure.”
   • B) they all exhibit: Incorrect. Placing a subject and verb (they all exhibit) after the comma without a conjunction creates a comma splice.
   • C) which exhibits: Incorrect. Which refers to the plural vessels, so it would require the plural verb exhibit, not the singular exhibits.
   • D) and exhibiting: Incorrect. The conjunction and is used to connect parallel clauses, but exhibiting is a participle phrase, creating a structural mismatch.

• Correct Answer: A

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Worked Example 2

The scientific consensus regarding the migration patterns of arctic terns ______ that these birds travel over \(70,000\) kilometers annually, flying from Greenland to Antarctica and back.

• A) indicate
• B) indicates
• C) are indicating
• D) have indicated

Explanation

1. Identify the Subject: The verb in the blank must agree with the subject of the sentence. The subject is consensus (singular). The prepositional phrase regarding the migration patterns of arctic terns is an intervening modifier.
2. Evaluate the Choices:
   • A) indicate: Incorrect. This is a plural verb.
   • B) indicates: Correct. This is the singular present tense verb that matches the singular subject consensus.
   • C) are indicating: Incorrect. This is a plural verb.
   • D) have indicated: Incorrect. This is a plural verb.

• Correct Answer: B

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Worked Example 3

Although many of the early landscape paintings of Thomas Cole depict idealized wilderness scenes, ______ based on sketches he made during his extensive travels through the Catskill Mountains.

• A) it was
• B) they were
• C) which were
• D) having been

Explanation

1. Analyze the Clauses: The sentence begins with a dependent clause introduced by the subordinating conjunction Although: “Although many of the early landscape paintings of Thomas Cole depict idealized wilderness scenes.” The clause after the comma must be an independent clause.
2. Evaluate the Choices:
   • A) it was: Incorrect. The singular pronoun it does not agree with the plural subject paintings.
   • B) they were: Correct. This provides the subject pronoun they (agreeing with the plural paintings) and the verb were, completing the independent clause.
   • C) which were: Incorrect. Using which makes the second clause dependent, resulting in a sentence fragment with no independent clause.
   • D) having been: Incorrect. This is a participle phrase, which fails to complete the independent clause.

• Correct Answer: B

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Worked Example 4

During the late Carboniferous period, massive club mosses and giant horsetails dominated the swampy forests of North America; when these plants died, their organic matter slowly accumulated in deep water, ______ oxygen from reaching the decomposing material and eventually forming coal beds.

• A) prevented
• B) which prevents
• C) preventing
• D) and prevents

Explanation

1. Analyze the Sentence: The clause after the semicolon begins with a dependent clause (when these plants died), followed by the independent clause (their organic matter slowly accumulated in deep water). The information after the comma describes the effect of the accumulation.
2. Evaluate the Choices:
   • A) prevented: Incorrect. Using prevented creates a second verb without a conjunction, leading to an awkward double-verb structure.
   • B) which prevents: Incorrect. The passage is written in the past tense (dominated, died, accumulated). Prevents is in the present tense, violating tense consistency.
   • C) preventing: Correct. The participle preventing forms a modifying participle phrase that describes the result of the accumulation, matching the parallel participle forming later in the clause.
   • D) and prevents: Incorrect. Violates tense consistency and parallel structure with forming.

• Correct Answer: C

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Worked Example 5

The research committee, consisting of four senior faculty members and three doctoral students, ______ to evaluate the new laboratory safety protocols next month.

• A) meets
• B) are meeting
• C) meet
• D) has met

Explanation

1. Identify the Subject: The subject is committee (singular). The intervening phrase consisting of four senior faculty members and three doctoral students is non-essential and must be crossed out.
2. Evaluate the Choices:
   • A) meets: Correct. This is a singular verb that agrees with the singular collective noun subject committee.
   • B) are meeting: Incorrect. This is a plural verb.
   • C) meet: Incorrect. This is a plural verb.
   • D) has met: Incorrect. The sentence indicates the meeting will happen “next month” (future), so the present perfect tense has met is chronologically incorrect.

• Correct Answer: A

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Worked Example 6

In the mid-\(20\text{th}\) century, cytogeneticist Barbara McClintock discovered transposable elements—DNA sequences that can change positions within a genome—while studying inheritance patterns in maize. For years, her groundbreaking work was met with skepticism; in the \(1980\text{s}\), ______ she was awarded the Nobel Prize in Physiology or Medicine after the significance of her discoveries was finally recognized.

• A) though,
• B) consequently,
• C) however,
• D) delete the word (no transition needed)

Explanation

1. Analyze the Context: The first sentence states McClintock discovered transposable elements. The second sentence states her work was met with skepticism (negative). The final clause states she won the Nobel Prize in the \(1980\text{s}\) after her work was recognized (positive/victory).
2. Analyze the Punctuation: The clause is structured as: ”; in the \(1980\text{s}\), [blank] she was awarded…” The blank is surrounded by a comma after the year and before the subject she. This is a parenthetical insertion.
3. Evaluate the Choices:
   • A) though: Correct. Though can act as an adverb meaning however when placed parenthetically. It establishes the contrast between the early skepticism and the late recognition.
   • B) consequently: Incorrect. Winning the Nobel Prize was not a direct cause/effect result of the skepticism.
   • C) however: Incorrect. While however is logically correct, placing it between a comma and the subject without a semicolon creates a punctuation error in this specific parenthetical structure. (Note: though is the only contrast adverb that sits comfortably in this specific parenthetical slot without creating a heavy clause break on the SAT).
   • D) delete the word: Incorrect. We need a contrast marker to connect the skepticism to the Nobel Prize.

• Correct Answer: A

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Worked Example 7

Unlike the root systems of most agricultural crops, ______ deep into the soil to access water reserves, making it highly resilient during prolonged droughts.

• A) the alfalfa plant extends roots
• B) the roots of the alfalfa plant extend
• C) extending the roots of the alfalfa plant
• D) alfalfa plants extend their roots

Explanation

1. Analyze the Comparison: The sentence begins with a comparative phrase: “Unlike the root systems of most agricultural crops.” The subject of this comparison is root systems (plural noun). The noun immediately following the comma must be comparable to root systems.
2. Evaluate the Choices:
   • A) the alfalfa plant…: Incorrect. This compares root systems (things) to the alfalfa plant (a plant). This is a logical comparison error.
   • B) the roots of the alfalfa plant…: Correct. This compares root systems to the roots of the alfalfa plant. This is a logical comparison of similar items.
   • C) extending…: Incorrect. This is a participle phrase, creating a modifier error.
   • D) alfalfa plants…: Incorrect. This compares root systems to alfalfa plants (plants).

• Correct Answer: B

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Worked Example 8

Although the team of software developers spent months refining the encryption code, ______ still vulnerable to brute-force attacks under certain network configurations.

• A) it was
• B) they were
• C) which was
• D) having been

Explanation

1. Identify the Subject: The sentence begins with a dependent clause: “Although the team of software developers spent months refining the encryption code.” The subject of the independent clause must be the code or the system. The adjective phrase still vulnerable describes the encryption code. The pronoun in the blank must agree with the singular noun code or team.
2. Evaluate the Choices:
   • A) it was: Correct. The singular pronoun it agrees with code (the subject of the vulnerability), completing the independent clause.
   • B) they were: Incorrect. The plural pronoun they would refer to the developers, but the developers themselves are not “vulnerable to brute-force attacks”—the code is.
   • C) which was: Incorrect. Creates a sentence fragment.
   • D) having been: Incorrect. Creates a fragment.

• Correct Answer: A

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Worked Example 9

To prevent soil erosion in high-wind agricultural zones, farmers often plant cover crops, ______ establish deep root networks that anchor the topsoil and reduce water runoff.

• A) which
• B) they
• C) whom
• D) these

Explanation

1. Analyze the Clauses: The main clause is “farmers often plant cover crops.” This is an independent clause. The information after the comma is a relative clause describing cover crops.
2. Evaluate the Choices:
   • A) which: Correct. The relative pronoun which introduces a dependent relative clause that describes the non-human subject cover crops.
   • B) they: Incorrect. Placing the subject pronoun they after the comma without a conjunction creates a comma splice.
   • C) whom: Incorrect. Whom is used only for human subjects.
   • D) these: Incorrect. Placing the demonstrative pronoun these after the comma without a conjunction creates a comma splice.

• Correct Answer: A

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Worked Example 10

In his \(1936\) essay “The Work of Art in the Age of Mechanical Reproduction,” philosopher Walter Benjamin ______ that technological replication strips an artwork of its unique cultural “aura.”

• A) argued
• B) argues
• C) had argued
• D) arguing

Explanation

1. Identify the Rule: When discussing claims made in a published literary work or essay, the SAT utilizes the literary present tense.
2. Evaluate the Choices:
   • A) argued: Incorrect. This is the past tense.
   • B) argues: Correct. This is the present tense verb, conforming to the literary present tense rule.
   • C) had argued: Incorrect. This is the past perfect tense.
   • D) arguing: Incorrect. This is a participle, resulting in a sentence fragment with no verb.

• Correct Answer: B

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10-Question Practice Drill

Apply the SAT grammar rules you have learned to complete this ten-question practice set.

Question 1

Although the administrative staff at the university’s research facility ______ to update the database weekly, technical glitches frequently cause delays in record synchronization.

• A) endeavor
• B) endeavors
• C) endeavoring
• D) have endeavored

Question 2

The ancient temple complex of Göbekli Tepe in Turkey features massive T-shaped stone pillars carved with images of wild animals; ______ constructed during the Pre-Pottery Neolithic period, approximately \(11,000\) years ago.

• A) which were
• B) they were
• C) having been
• D) were

Question 3

The environmental agency’s report on watershed conservation identified several key pollutants, including agricultural runoff, industrial chemical waste, and ______ sewage systems that overflow during heavy rainfall.

• A) municipal
• B) to overflow municipal
• C) municipal raw
• D) municipal sewage systems

Question 4

Each of the modern painting conservation techniques discussed in the journal ______ microscopic analysis of pigment layers to ensure that restoration efforts match the artist’s original chemical compositions.

• A) require
• B) requires
• C) are requiring
• D) have required

Question 5

Having spent years studying the vocalizations of killer whales, the research team finally mapped ______ distinct dialects, which vary significantly between different geographic pods.

• A) its
• B) their
• C) they’re
• D) there

Question 6

During the excavation of the Bronze Age shipwreck off the coast of Turkey, marine archeologists recovered copper ingots, bronze tools, and ______ ceramic amphorae filled with olive oil and resins.

• A) numerous
• B) to find numerous
• C) they found numerous
• D) finding numerous

Question 7

Unlike the poetry of her contemporary, Robert Frost, which focused on rural New England landscapes, Wallace Stevens wrote highly abstract works that explored philosophical concepts.

• A) Wallace Stevens wrote highly abstract works
• B) Wallace Stevens’s abstract works explored
• C) the abstract works of Wallace Stevens explored
• D) writing abstract works, Wallace Stevens explored

Question 8

The new solar cell prototype is highly efficient; it converts up to \(22%\) of incoming sunlight into electricity, ______ the performance of previous silicon-based cells.

• A) exceeded
• B) exceeding
• C) exceeds
• D) to exceed

Question 9

In her landmark \(1962\) book Silent Spring, biologist Rachel Carson ______ that the widespread agricultural use of synthetic pesticides posed a severe threat to ecological systems.

• A) documented
• B) documents
• C) had documented
• D) documenting

Question 10

The geological conservation team, which includes experts from three national park services and two research universities, ______ to evaluate the soil erosion patterns in the canyon next spring.

• A) plan
• B) plans
• C) are planning
• D) have planned

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Practice Drill Explanations

Question 1 Explanation

• Identify the Subject: The subject of the dependent clause is staff (singular collective noun). The intervening prepositional phrase at the university’s research facility must be crossed out.
• Option Breakdown:
  • A) endeavor: Incorrect. Plural verb.
  • B) endeavors: Correct. Singular verb that agrees with the singular subject staff.
  • C) endeavoring: Incorrect. Participle, creating a fragment.
  • D) have endeavored: Incorrect. Plural verb.
• Correct Answer: B

Question 2 Explanation

• Analyze the Clauses: The sentence is split by a semicolon. The second clause must be an independent clause. The subject of the clause is the pillars (plural).
• Option Breakdown:
  • A) which were: Incorrect. Creates a dependent clause.
  • B) they were: Correct. Completes the independent clause with a subject pronoun (they) and a verb (were).
  • C) having been: Incorrect. Creates a fragment.
  • D) were: Incorrect. Lacks a subject pronoun, resulting in a fragment.
• Correct Answer: B

Question 3 Explanation

• Analyze the Parallelism: The sentence lists three pollutants: (1) agricultural runoff (adjective + noun), (2) industrial chemical waste (adjective + adjective + noun), and (3) [blank] sewage systems (adjective + noun phrase). The blank must contain an adjective that describes the sewage systems to maintain parallel structure.
• Option Breakdown:
  • A) municipal: Correct. This adjective forms the parallel phrase municipal sewage systems (adjective + noun phrase).
  • B) to overflow municipal: Incorrect. Non-parallel infinitive structure.
  • C) municipal raw: Incorrect. Creates redundancy and awkward phrasing.
  • D) municipal sewage systems: Incorrect. The noun sewage systems is already in the sentence; repeating it creates redundancy.
• Correct Answer: A

Question 4 Explanation

• Identify the Subject: The subject is Each (singular indefinite pronoun). The prepositional phrase of the modern painting conservation techniques discussed in the journal is an intervening modifier and must be ignored.
• Option Breakdown:
  • A) require: Incorrect. Plural verb.
  • B) requires: Correct. Singular verb that agrees with the singular subject Each.
  • C) are requiring: Incorrect. Plural verb.
  • D) have required: Incorrect. Plural verb.
• Correct Answer: B

Question 5 Explanation

• Identify the Antecedent: The pronoun in the blank replaces killer whales (plural noun). The possessive pronoun must be plural.
• Option Breakdown:
  • A) its: Incorrect. Singular possessive pronoun.
  • B) their: Correct. Plural possessive pronoun agreeing with the plural killer whales.
  • C) they’re: Incorrect. Contraction of they are.
  • D) there: Incorrect. Indicates place.
• Correct Answer: B

Question 6 Explanation

• Analyze the Parallelism: The sentence lists three items recovered from a shipwreck: (1) copper ingots (noun phrase), (2) bronze tools (noun phrase), and (3) [blank] ceramic amphorae (noun phrase). The blank must contain an adjective to describe the amphorae, keeping the list parallel.
• Option Breakdown:
  • A) numerous: Correct. The adjective numerous forms the parallel phrase numerous ceramic amphorae (adjective + noun phrase).
  • B) to find numerous: Incorrect. Non-parallel infinitive.
  • C) they found numerous: Incorrect. Creates a run-on clause in the middle of a list.
  • D) finding numerous: Incorrect. Non-parallel participle.
• Correct Answer: A

Question 7 Explanation

• Analyze the Comparison: The sentence begins with: “Unlike the poetry of her contemporary, Robert Frost.” This phrase establishes a comparison with poetry (a thing). The noun immediately following the comma must be comparable to poetry.
• Option Breakdown:
  • A) Wallace Stevens wrote…: Incorrect. This compares poetry (a thing) to Wallace Stevens (a person).
  • B) Wallace Stevens’s abstract works…: Correct. This compares poetry (artistic works) to Wallace Stevens’s abstract works (artistic works). This is a logical comparison.
  • C) the abstract works of…: Incorrect. While it compares works to poetry, Option B is more direct and preserves the active agent subject structure. (Note: on the SAT, B is the preferred format for possessive comparison alignment).
  • D) writing abstract…: Incorrect. Creates a dangling modifier.
• Correct Answer: B

Question 8 Explanation

• Analyze the Sentence: The sentence features an independent clause: “it converts up to \(22%\) of incoming sunlight into electricity.” The information after the comma must form a modifying phrase that describes the result of this high conversion rate.
• Option Breakdown:
  • A) exceeded: Incorrect. Creates a double-verb error without a conjunction.
  • B) exceeding: Correct. The participle exceeding forms a modifying phrase that logically details the result of the conversion rate.
  • C) exceeds: Incorrect. Creates a run-on clause.
  • D) to exceed: Incorrect. Awkward infinitive modifier.
• Correct Answer: B

Question 9 Explanation

• Identify the Rule: When discussing claims made in a published literary work or science book (Silent Spring), the SAT utilizes the literary present tense.
• Option Breakdown:
  • A) documented: Incorrect. Past tense.
  • B) documents: Correct. Present tense verb, conforming to the literary present tense.
  • C) had documented: Incorrect. Past perfect tense.
  • D) documenting: Incorrect. Participle, resulting in a fragment.
• Correct Answer: B

Question 10 Explanation

• Identify the Subject: The subject is team (singular collective noun). The relative clause which includes experts from three national park services and two research universities is non-essential and must be ignored.
• Option Breakdown:
  • A) plan: Incorrect. Plural verb.
  • B) plans: Correct. Singular verb that agrees with the singular subject team.
  • C) are planning: Incorrect. Plural verb.
  • D) have planned: Incorrect. Plural verb.
• Correct Answer: B

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Conclusion

Mastering SAT grammar is a matter of executing a checklist of mechanical rules. By identifying sentence boundaries, tracing verb agreement to the true singular or plural subject, and aligning pronoun references, you can answer grammar questions with a clearer, rule-based process.

For more practice with these concepts, explore our resources:

• Read our detailed guide on Standard English Conventions.
• Test your skills on the Verbal Practice Quiz Engine.
• Reinforce active recall of rules using our Grammar Flashcards.