Modal verbs

Modal verbs explained + interactive exercises.

Can, could have to, might, must, should

Have to, must

Couldn't, might not

Could, might, should, would

Modals, verb forms

Final test

Adventure in the desert

A desert, a kiss by a camel, riding on a camel, annoying flies, an unexpected accident and a dangerous encounter. (2 in 1:Cartoon & Test).
Aim: Mixed tenses revision.
Level: Intermediate and upwards.

http://www.englishtenseswithcartoons.com/page/visualtests/1

Present perfect or past simple? (Intermediate)

Try this short online exercise - it is very similar to those we have done in Unit 2.

http://www.englishtenseswithcartoons.com/pages/exercises/PastSimplevsPresentPerfect1.php

First conditional exercises (Pre-intermediate students)

For more practice on first conditional, try to do these online exercises:

http://www.englisch-hilfen.de/en/exercises/if_clauses/type_1_statements.htm

or

http://www.englishgrammarsecrets.com/firstconditional/exercise1.html

Let us know if you find some more.