Commas, Commas, Commas

Commas are used to indicate a pause between parts of a sentence, separate items in a list, or clarify meaning.

A comma should be used before 'and' in a list of three or more items (Oxford comma), but it can be omitted in simpler lists.

An introductory phrase is a group of words that provides context or background information for the main part of the sentence and is usually followed by a comma.

You should place a comma after an introductory phrase to separate it from the main clause of the sentence.

A compound sentence consists of two independent clauses joined by a coordinating conjunction, often requiring a comma before the conjunction.

You should use a comma before the coordinating conjunction (for, and, nor, but, or, yet, so) that connects two independent clauses.

A non-essential clause adds extra information to a sentence but can be removed without changing the sentence's main meaning, and it should be set off by commas.

You should place commas before and after a non-essential clause to indicate that it is additional information.

A direct address is when you speak directly to someone, and it is set off by commas.

You should use commas to separate the name or title of the person being addressed from the rest of the sentence.