Avoiding Common Punctuation Mistakes in SAT Writing
Introduction
Punctuation errors are a common source of lost points in the SAT Writing and Language section. Questions often test your understanding of commas, colons, semicolons, and dashes.
This guide explains:
- The most common punctuation errors on the SAT.
- Clear examples with correct and incorrect versions.
- Proven strategies to avoid mistakes and improve accuracy.
Misusing Commas
Commas are often misused in three key scenarios:
- Comma Splices
A comma splice occurs when two independent clauses are joined incorrectly with a comma.
Example:
- Incorrect: The test was hard, I did well.
- Correct: The test was hard; I did well.
- Missing Commas After Introductory Phrases
Always use a comma after an introductory phrase.
Example:
- Incorrect: After studying for hours I felt prepared.
- Correct: After studying for hours, I felt prepared.
- Unnecessary Commas
Avoid using commas between subjects and verbs.
Example:
- Incorrect: The teacher, gave us a test.
- Correct: The teacher gave us a test.
Misunderstanding Semicolons
A semicolon connects two independent clauses without a conjunction.
Rule: Use a semicolon only when both parts of the sentence can stand alone.
Example:
- Correct: I studied hard for the test; I wanted a high score.
Tip: If you see and, but, or so, use a comma—not a semicolon.
Using Colons Incorrectly
Colons introduce a list, explanation, or emphasis but must follow a complete sentence.
Example:
- Incorrect: The recipe calls for: flour, sugar, and eggs.
- Correct: The recipe calls for the following: flour, sugar, and eggs.
Overusing or Misusing Dashes
Dashes add emphasis or set off non-essential information.
Rule: Use dashes sparingly to avoid confusion.
Example:
- Correct: The SAT—unlike other tests—focuses heavily on grammar.
Practice Question
Question: Choose the correct version:
- The teacher explained the topic clearly, the students understood it well.
B. The teacher explained the topic clearly; the students understood it well.
C. The teacher explained the topic clearly and; the students understood it well.
Answer: B. The semicolon correctly connects two independent clauses.
Summary
Avoiding punctuation mistakes on the SAT Writing section requires understanding commas, semicolons, colons, and dashes. Focus on the rules and practice spotting errors to improve accuracy and confidence.
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