4th ESO.Past Simple or Present Perfect

UNIT 3

You will find some theory about these two verbal tenses and some exercises so as to be able to distinguish them.

http://www.ego4u.com/en/cram-up/grammar/simpas-preper

http://www.englishexercises.org/makeagame/viewgame.asp?id=3365

http://www.englishexercises.org/makeagame/viewgame.asp?id=1496

http://www.englishexercises.org/makeagame/viewgame.asp?id=5987

http://www.englishexercises.org/makeagame/viewgame.asp?id=4769