PREPOSITIONS

HAVE A LOOK AT THIS WEBSITE TO START WITH PREPOSITIONS.

http://www.wordpower.ws/grammar/gramch26.html

1st BIG QUESTION : BRITISH AND AMERICAN ENGLISH WORDS

Which are the American English words for the following British English words?
car, car park, lorry, pavement and petrol.

PRESENT PERFECT AND PAST SIMPLE

If you need more pratice , these websites will be very useful for you.

Grammar & practice :

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

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

http://www.esltower.com/GRAMMARQUIZ/intermediate/present%20perfect%20vs%20past%202.htm

Practice:

http://www.englishgrammarsecrets.com/presentperfectorpastsimple/exercise1.swf

http://web2.uvcs.uvic.ca/elc/studyzone/330/grammar/upperf2.htm

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

http://www.usingenglish.com/quizzes/228.html

http://www.englishgrammarsecrets.com/presentperfectorpastsimple/exercise3.swf

Yet , already, just, for & since practice:

http://www.englishexercises.org/makeagame/viewgame.asp?id=877

http://www.servator.cat/eva/index_files/Grammar/2ndcycle/4tESO/prsperf2.htm

http://www.englishexercises.org/makeagame/viewgame.asp?id=3211

http://www.imparareinglese.co.uk/esercizi_inglese/present_perfect_words.html