Commas after Introductory Elements

Remember that you need to place a comma after introductory elements in your sentences. 

Introductory elements come before the main clause of a sentence and prepare the reader for the "meat" of the sentence. 

Introductory elements can include the following:

Prepositional phrases:  In the morning, I went to school.

Adverbial phrases and clauses: When I wake up, I will go to school.

Dependent clauses: Because I drank sour milk, now I don’t feel well.

There are other introductory elements as well, but the thing they all have in common is that they come before the main subject and verb of a sentence. They tell why, when, or where. 

Don’t forget these commas!