A TRICKY ONE; MR PRESENT PERFECT

Difference between Since and for:



http://www.quia.com/cb/305638.html (before playing , listen to the podcast as you will find out some of the answers in it)

http://langues.u-bordeaux4.fr/ANGLAIS/EXOGRAM/forsinceago2.htm



http://langues.u-bordeaux4.fr/ANGLAIS/EXOGRAM/forsinceago1.htm



http://www.englishmedialab.com/Quizzes/intermediate/since%20for%20last%20ago.htm



Difference between Present Perfect Simple and Continuous
http://englischlehrer.de/tests/tenses4.php

http://www.home.hs-karlsruhe.de/~kech0001/ifs/ex-en/efs2_exercises/unit1_5_present_perfect_vs_present_perf_continuous.htm

http://www.smic.be/smic5022/presentperfect.htm


Difference between Simple Past and Present Perfect Simple

http://perso.wanadoo.es/autoEnglish/gr.perf.i.htm

http://esl.about.com/library/quiz/blpastorperfect1.htm

http://esl.about.com/library/quiz/blpastorperfect2.htm

http://www.home.hs-karlsruhe.de/~kech0001/ifs/ex-en/efs1_exercises/pastsimpleperfect.htm

http://langues.u-bordeaux4.fr/ANGLAIS/EXOGRAM/presperf2.htm