Present Perfect Tense

Submitted by Anonymous on Fri, 12/05/2008 - 08:10

How to use them?

Submitted by Admin on Fri, 12/05/2008 - 12:08.

What do you mean by "them"?

Submitted by Admin on Thu, 12/11/2008 - 10:58.

You have some info over here: http://www.englishtenseswithcartoons.com/page/tenses/present_perfect

English tenses