Unit 10 Level 3 (Upper-Intermediate- Advanced) Present Perfect

Is it true that you don't have any trouble using the Present Perfect? You can understand all the explanations about the Present Perfect?

Test yourself watching these videos:

Video 1

http://www.metacafe.com/watch/yt-

English School Dublin - U-Learn Explains Present Perfect - Funny video clips are a click away

If you have any doubts, please check level 2

3) Practice makes perfect!