Relative Clauses and Placement: Positioning Clauses So They Clearly Modify the Intended Noun

A relative clause (introduced by who, whom, whose, that, which) must immediately follow the noun it modifies. Correct: "The teacher, who has 20 years of experience, taught the class." Incorrect: "The teacher taught the class, who has 20 years of experience" (now "who" seems to modify the class, not the teacher). The rule is simple: place the clause right after the noun it modifies, with no intervening phrases.

Build a clause-placement check: when you write or revise a sentence with a relative clause, verify that the clause immediately follows the noun it modifies. If any words appear between the noun and the clause, reorder the sentence. This check takes 10 seconds but prevents misplaced-clause errors on the SAT.

Error 1: "I spoke to the principal about the issue, who is very concerned." Fix: "I spoke to the principal, who is very concerned, about the issue." Error 2: "The policy was introduced by the manager, which created confusion." Fix: "The policy, which created confusion, was introduced by the manager." Error 3: "The student submitted the essay late, which was disappointing." Ambiguity: does "which" refer to the essay or submitting late? Fix: clarify by moving the clause. Error 4: "The company announced the project, that begins next month." Fix: use "which" not "that" and move the clause: "The company announced the project, which begins next month." Error 5: "We visited the museum with the students, which was educational." Ambiguity: which noun does the clause modify? Fix: "We visited the museum with the students, an experience that was educational."

Master these five patterns because they account for 70% of relative-clause errors on the SAT. When you see each pattern, automatically apply the fix.

"That" introduces essential (restrictive) clauses: "The book that I read last month was excellent." The clause "that I read last month" is essential to identify which book. "Which" introduces non-essential (nonrestrictive) clauses: "The book, which I read last month, is excellent." The clause is extra information about an already-identified book. The difference is in whether the clause is essential for identification (use "that") or extra (use "which" with commas).

Practice this distinction on five SAT sentences. For each, identify whether the clause is essential (identify "that") or extra (use "which"), then correct any errors. Notice how the right choice depends on whether the clause is essential to identifying the noun on the SAT.

Sentence 1: "The book that teaches writing skills was published last year." Correct: no change (that introduces essential clause). Sentence 2: "The book, that teaches writing skills, was published last year." Correct to: "The book, which teaches writing skills, was published last year." (Essential clauses use that; nonessential use which.) Sentence 3: "The student submitted homework, that was late." Correct to: "The student submitted homework that was late" or clarify what "late" modifies. Sentence 4: "The company hired new employees, who are starting next week." Correct: no change, but check that the clause clearly modifies employees.

Work through these four sentences, identifying placement issues and applying fixes. Then practice on 10 more SAT Writing passages, fixing all relative-clause errors. By test day, clause placement and that/which usage will be automatic on the SAT.