SAT · Standard English Conventions · TOPIC LESSON
Build grammatical sentences by matching number, choosing complete verb forms, tracking time, and placing modifiers accurately.
BY THE END, YOU CAN
BEFORE YOU START
Original educational lesson. Work through the examples before revealing the practice answers. This lesson supports SAT Math and Reading and Writing skill study; it does not reproduce official questions or guarantee a score.
LEARN THROUGH ORIGINAL PRACTICE
The teaching passages, worked examples and exercises in this lesson are original. They are not official College Board questions or past-exam reproductions. Blueprint and observed-practice analytics describe separate factual metadata; those source questions are not displayed here.
01 / UNDERSTAND & APPLY
Identify the main subject, main finite verb, and any required complement before judging word forms. Then ask which noun each pronoun or modifier refers to. Long phrases can hide these relationships, but they do not change them.
This lesson covers the framework’s six usage areas: subject–verb agreement, pronoun–antecedent agreement, verb finiteness, verb tense and aspect, subject–modifier placement, and genitives/plurals. All names, contexts, and sentences are original teaching examples.
02 / UNDERSTAND & APPLY
In the present tense, many singular third-person subjects take an -s verb: “The box contains tiles.” Plural subjects usually take the base form: “The boxes contain tiles.” The verb agrees with box or boxes, not a nearby noun in an of-phrase.
Each and every normally take a singular noun/verb pattern; a compound subject joined by and is normally plural. In a neither…nor or either…or construction, conventional agreement often follows the nearer subject. Collective nouns such as team commonly take singular verbs in American English when the group acts as a unit. Always inspect the specific sentence rather than relying on the closest visible noun.
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ORIGINAL WORKED EXAMPLE
Choose: “The collection of woven mats _____ several regional patterns.” A display B displays C displaying D have displayed
Answer B. The collection displays several patterns.
ORIGINAL WORKED EXAMPLE
Choose: “Beside the cabinet _____ two empty frames.” A stands B standing C stand D has stood
Answer C. Beside the cabinet stand two empty frames.
03 / UNDERSTAND & APPLY
An antecedent is the noun or noun phrase a pronoun refers to. Identify it from meaning and sentence structure, then match number and person. “The instruments were packed in their cases” uses their for plural instruments. “The instrument was packed in its case” uses its for one instrument.
A nearby noun is not automatically the antecedent. Keep reference unambiguous. Singular they is accepted for an individual person in contemporary English; do not invent a blanket rule that they can only be plural. In object-based examples here, its versus their follows an unambiguous singular/plural referent.
ORIGINAL WORKED EXAMPLE
Choose: “The instrument in the wooden cases has lost _____ label.” A their B they’re C its D it’s
Answer C. The instrument has lost its label.
04 / UNDERSTAND & APPLY
A finite verb supplies tense, agreement, or a modal construction: walks, walked, is walking, has walked, can walk. A bare participle such as walking or an infinitive such as to walk cannot alone serve as the main finite verb of an ordinary declarative sentence.
Past-tense forms and past participles can look identical for regular verbs, but their jobs differ. In “The tiles painted by Lio hang above the desk,” painted by Lio modifies tiles; hang is the main finite verb. A verb inside a relative clause does not complete the larger clause’s predicate.
ORIGINAL WORKED EXAMPLE
Choose: “The sculpture that stands beside the stairs _____ from recycled wire.” A making B to make C made D is made
Answer D. The sculpture is made from recycled wire.
05 / UNDERSTAND & APPLY
A gerund is an -ing form functioning like a noun: “Sketching requires patience.” A participle can modify a noun: “the sketching artist” or “the repaired clock.” An infinitive uses to plus a base verb: “The artist hopes to sketch.” These forms are useful, but only where the sentence’s structure calls for them.
After a modal such as can or must, use the base verb: can travel, not can travels. In a passive construction, use be plus a past participle: was chosen, not was chose. Recognize irregular forms instead of assuming every past participle ends in -ed.
ORIGINAL WORKED EXAMPLE
Choose: “_____ the fragile pieces requires steady hands.” A Handle B Handling C Handles D Have handled
Answer B. Handling the fragile pieces requires steady hands.
06 / UNDERSTAND & APPLY
Tense locates events relative to time; aspect describes their unfolding or completion. Simple past reports an event in a finished past period. Present perfect, has/have + past participle, connects earlier activity with the present. Past perfect, had + past participle, can mark an event completed before another past point. Progressive forms, be + -ing, present activity as ongoing at the relevant time.
Use explicit time cues and nearby verbs. Do not force every verb into the same tense when the chronology changes. “She now teaches the method she learned last year” correctly shifts between present and past. Conversely, do not shift time without a reason.
ORIGINAL WORKED EXAMPLE
Choose: “By the time the guests arrived, the crew _____ the stage.” A has assembled B will assemble C had assembled D assembles
Answer C. The crew had assembled the stage.
ORIGINAL WORKED EXAMPLE
Choose: “At noon yesterday, Imani _____ the mural when the lights went out.” A was painting B will paint C paints D has painted
Answer A. Imani was painting the mural.
07 / UNDERSTAND & APPLY
An introductory modifying phrase usually describes the subject that immediately follows it. “Carrying a heavy crate, Nilo entered the room” gives Nilo the action of carrying. “Carrying a heavy crate, the room was entered by Nilo” incorrectly makes the room the apparent carrier.
Ask a literal question: Who or what is carrying, designed, surprised, or covered? Then check that the sentence names that referent in the right place. A modifier can be grammatically attached yet still illogical. Preserve the intended meaning, not merely a superficially smooth rhythm.
ORIGINAL WORKED EXAMPLE
Choose: “Designed to fit beneath the desk, _____.” A the carpenter measured the cabinet carefully B the cabinet occupies little floor space C there is little floor space D the desk’s owner likes the cabinet
Answer B. Designed to fit beneath the desk, the cabinet occupies little floor space.
08 / UNDERSTAND & APPLY
A plural noun names more than one: lanterns. A genitive or possessive form marks a relationship: the lantern’s handle, one lantern; the lanterns’ handles, multiple lanterns. Regular plurals ending in s take an apostrophe after that s for possession. Irregular plurals not ending in s take ’s: children’s, people’s.
First decide how many owners there are, then whether possession is required, then form the noun. Do not add an apostrophe just because a noun is plural. The singular word lens ends in s but is not plural; lens’s marks a singular possessive under the convention used here.
ORIGINAL WORKED EXAMPLE
Choose: “The three _____ handles were wrapped in cloth.” A lantern’s B lanterns C lanterns’ D lanterns’s
Answer C. The three lanterns’ handles were wrapped in cloth.
09 / UNDERSTAND & APPLY
Its, their, and your are possessive determiners and take no apostrophe. It’s means it is or it has; they’re means they are; you’re means you are. There can indicate a place or introduce an existence statement. Read the expanded form in context: “it is handle” cannot mean possession.
Whose is possessive; who’s means who is or who has. These distinctions depend on grammatical function, not pronunciation. A spellchecker may accept every option because each is a real word.
ORIGINAL WORKED EXAMPLE
Choose: “The clock has lost _____ minute hand, but _____ still running.” A it’s / its B its / it’s C their / they’re D its / its
Answer B. Its minute hand; it’s still running.
10 / UNDERSTAND & APPLY
Underline the true subject and identify which clause each verb belongs to.
ORIGINAL PRACTICE · 1
C
Each is singular, so shows agrees. A and D are plural/base constructions; B is nonfinite and leaves no main verb.
ORIGINAL PRACTICE · 2
B
The compound subject joined by and is plural, requiring are. A and D are singular; C is a participle without an auxiliary.
ORIGINAL PRACTICE · 3
D
The nearer subject assistants is plural, and are supplies plural agreement. A and C are singular; B lacks a finite verb.
ORIGINAL PRACTICE · 4
C
The antecedent lanterns is plural and labels needs a possessive determiner. A is singular; B expands to it is/has; D expands to they are.
ORIGINAL PRACTICE · 5
A
The main subject device is singular. Measures belongs to the relative clause; the main clause needs the finite singular verb needs. B/C are nonfinite and D lacks agreement.
ORIGINAL PRACTICE · 6
D
The passive requires was plus a past participle; chosen is the irregular participle of choose. A is simple past, B present participle, and C a finite present form.
11 / UNDERSTAND & APPLY
Use the given chronology and intended referent, not a rule that all verbs must look alike.
ORIGINAL PRACTICE · 1
B
Yesterday locates a completed event in the past. A and C use the wrong time; D is not a correct present-perfect form.
ORIGINAL PRACTICE · 2
C
Since 2020 and continues today connect a starting point in the past to the present; has trained fits. A contradicts the period, B shifts to the future, and D is ungrammatical.
ORIGINAL PRACTICE · 3
A
The path is covered with snow, so it should immediately follow the modifier. B and D attach it to people; C fails to name the intended modified subject.
ORIGINAL PRACTICE · 4
D
The crew performs the inspection and uses the platforms for that purpose. A and B make a ladder or leak the implied inspector; C does not name an actor that logically carries out the purpose.
12 / UNDERSTAND & APPLY
Decide number first, possession second, and then test any contraction by expansion.
ORIGINAL PRACTICE · 1
B
Two requires the regular plural musicians; possession adds an apostrophe after the s. A is singular, C lacks the possessive marker, and D adds an incorrect extra s.
ORIGINAL PRACTICE · 2
C
Children is already an irregular plural, so possession takes ’s. A is not the needed possessive, B adds an s as if children were not already plural, and D describes one child.
ORIGINAL PRACTICE · 3
A
You are welcome needs you’re; coats belonging to the addressees needs your. B reverses them; C lacks are; D wrongly expands to you are coats.
ORIGINAL PRACTICE · 4
D
Their bags is possession; over there is location; they’re preparing means they are preparing. Every other choice assigns at least one homophone the wrong grammatical function.
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