Do you know about the verb tenses? What's the difference between the present perfect and the past simple? Are you sure? How about the past perfect? Many students have problems with verb tenses. But they aren't really very difficult, I promise. Here you'll find really clear examples and explanations, so you can easily review all the English tenses - firstly how to make them (the 'form'), secondly, how to use them (the 'use').
