In a series of three or more terms with a single conjunction, use a comma after each term except the last.

No comma, however, should separate a noun from a restrictive term of identification.

Use a dash to set off an abrupt break or interruption and to announce a long appositive or summary.

A colon tells the reader that what follows is closely related to the preceding clause. The colon has more effect than the comma, less power to separate than the semicolon, and more formality than the dash.

A dash is a mark of separation stronger than a comma, less formal than a colon, and more relaxed than parentheses.

The number of the subject determines the number of the verb.

When the main clause of a sentence is preceded by a phrase or a subordinate clause, use a comma to set off these elements.

Join two independent clauses with a colon if the second interprets or amplifies the first.

Do not break sentences in two.