Punctuation

Commas, apostrophes and the run-on sentence.

The rules

  • Two full clauses need a conjunction after the comma, a bare comma is a "comma splice".
  • Possessive "its" never takes an apostrophe.
  • Sentence-starting linkers (However, Therefore, Moreover) take a comma after them.
  • Separate list items with commas; the final comma before "and" (Oxford comma) is optional but consistent.
  • Reported questions are statements, they end with a full stop, not a question mark.
  • Capitalise "Dear" and the name; a comma follows the greeting.

Examples

  • I was tired, so I went to bed.
  • The company changed its policy.
  • However, the results were clear.
  • We need eggs, milk, and bread.
  • She asked me where I lived.
  • Dear Mr Smith,

Quick check

Pick an answer to see the rule behind it.

1.Which sentence is punctuated correctly?

2.Which is correct?

3.Where do commas belong? "However the results were clear"

4.Which list is punctuated correctly?

5.Which question is punctuated correctly?

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