Week 3 - Grammar

For more information on the present perfect go to:

http://web2.uvcs.uvic.ca/elc/studyzone/410/grammar/pperf.htm

Then for differences between simple past & present perfect:

http://web2.uvcs.uvic.ca/elc/studyzone/410/grammar/ppvpast.htm

You can test yourself on the difference between the "present perfect" and the "simple past" here:

http://esl.about.com/library/quiz/bl_pastorperfect1.htm