my friend needs help with the verb forms. we always get this question in the English Exam: pu t the verb in the right form.

how can he put the verb in the right form he wouldn't know when to put ( ing or ed , ...etc ) his exam is on monday so i need to help him very quickly!
any website, tips, anything please!

Here is a tip:
Present tense: ing
Past tense: ed

A website:
http://en.wikipedia.org/wiki/Tenses#Compound_tenses
Go to the bottom of the page.

ing - present or future tense
ed - past tense (there are exceptions though)

for example:
to go:

I go - I went - I am going
You go - You went - You are going
She goes - She went - She is going
He goes - He went - He is going
We go - We went - We are going
You go - You went - You are going
They go - They went - They are going

These tests due their best to try to get you confused. I am going to the store. I have been going to the store each day for one year. Just remember past and present tense and if it sounds right it probably is. So have him think of all possible forms and use the one that sounds right.