The ESL Blues website has a set of “progress tests“. When you take a progress test, it will ask you questions about different grammar points, or vocabulary. For each question you get incorrect, it will show you the grammar point you got wrong – and a practice exercise to help you understand.
For example, one of the progress test questions is:
This is your book, not ____. That is my book over there.
b) of my
d) to me
If your answer is not correct, you will see this: My, mine, her, hers, etc. (It links to a practice exercise about “mine”, which was the correct answer)
Here’s a website – called bab.la – that will help show you all the forms of most common English verbs. For example, you can look up the conjugation of the verb EAT. (I eat, he eats…; I ate, he ate…; I have eaten; etc. )
You can also translate each verb into any of 27 different languages.
If you have been studying English for a while, go to bab.la, look up the conjugation for a verb, and see how many of the verb forms you know.