Using commas to separate clauses

separating clauses with commasThe following lesson is an adapted extract from the book, Advanced Writing Skills for Students of English. I’ve decided to share it here as I’ve had a few questions relating to punctuation and sentence structure lately, and this gives a useful introduction to how commas help signal longer sentences. Commas are typically used to separate clauses in complex sentences, when we have a main clause and one or more subordinate clauses:

  • The passengers waited outside, while the steward refused to open the door.

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