What are Phrasal Verbs?

Phrasal verb is the name given to an English verb which is composed of two or three words. One verb is combined with a preposition (like on, in, under) or an adverb (like up, down, away). Sometimes a phrasal verb can have a meaning that is very different to the meaning of at least one of those two or three words separately. Some text books call these verbs multi-word verbs. Phrasal verbs are used more frequently in everyday speech than in formal, official writing or speaking.

Here are some examples:

To Run For
Gore is running for president of the U.S.A.
To Cross Out
Why did you cross my name out on the list?
To Get Through With
Have you gotten through with your homework yet?
To Keep On
He kept on talking after everybody asked him to stop.
To Wear Out
Her three kids wore me out.