Lesson 38 of 46
Commas
Place commas so sentences are easy to read.
The rules
- 1.Use commas in lists: "We need paper, ink, and toner."
- 2.Put a comma after an introductory word or phrase: "However, we agree." "In the morning, I check email."
- 3.Put a comma before and, but, so, or when they join two complete sentences: "I called, but he did not answer."
- 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
← Previous: Relative clauses: who, which, that, whose
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