Lesson 38 of 46

Commas

Place commas so sentences are easy to read.

The rules

  1. 1.Use commas in lists: "We need paper, ink, and toner."
  2. 2.Put a comma after an introductory word or phrase: "However, we agree." "In the morning, I check email."
  3. 3.Put a comma before and, but, so, or when they join two complete sentences: "I called, but he did not answer."
  4. 4.Do not put a comma between the subject and its verb, or before "that" in a defining clause.

Common mistakes and fixes

Incorrect: The manager, is late.

Correct: The manager is late.

No comma between subject and verb.

Incorrect: However we should try.

Correct: However, we should try.

Comma after an introductory word.

Incorrect: I like tea but she likes coffee.

Correct: I like tea, but she likes coffee.

Comma before but between two full clauses.

Watch out: Read the sentence aloud; a comma usually marks a small pause.

Quick quiz

1. Which is correct?
2. Which is correct?
3. Which is correct?

← Previous: Relative clauses: who, which, that, whose

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