A phrasal verb is a combination of a verb and a preposition: give up, set up, run out, go away… are phrasal verbs. Many people have negative feelings about phrasal verbs. Why? Because it’s impossible to know the meaning of a phrasal verb from the words. For example, if you say ‘I’ve run out of milk’ It doesn’t mean that you run, it means that you don’t have any milk.
Try it! Click on Bob Wilson’s web page. You can watch the video as an introduction and then test yourself in some online phrasal verbs exercises.