SAT Reading / Text Structure

The Function of a Sentence or Phrase

Part of the full libraryOpens January 2, 2027 · $97 for a year
What’s included
functionThe job a sentence, phrase, or detail does in a text, such as giving an example, challenging a view, or limiting a claim.

You’ll leave with these skills

  1. Explain what a sentence does for the sentences around itCompare the underlined sentence with the sentences around it to see whether it backs up a point, pushes back on one, or sets up what comes next.
  2. Read a function question’s answer choices as job descriptionsWhen the question asks for “the function of the underlined sentence,” compare the verb after “It” in each answer choice.
  3. Predict an underlined sentence’s job before you read the choicesRead the sentences before and after the underlined one, and describe what it does to them in a short phrase that starts with a verb.
  4. Catch function choices that describe content but name no jobCross out a choice that only repeats what the underlined sentence says or describes what a nearby sentence does.

This lesson is part of the full library

207 lessons that teach every skill the SAT tests
  • 71Math
  • 40Reading
  • 24Grammar
  • 10 full-length practice tests to build test-day stamina and confidence
  • A Desmos simulator to solve math questions faster
  • A step-by-step guide to every practice test question
  • The Bluebook Simulator, so test day feels familiar
  • A drawing for every key term, so new ideas make sense at a glance

Explore the full library