We use the suffix -ED to form the affirmative past simple form of the verb. It is really easy because it only has one form!
To form the negative we use DIDN'T and the infinitive of the main verb. And to form the interrogative we use DID+ the subject+ the infinitive of the main verb?.
affirmative// negative// interrogative
You studied //You didn't study// Did you study?
Study the theory and do the following exercises:
Exercise 2
Exercise 3
Exercise 4
Irregular verbs:
There is a list of irregular verbs that you have to learn. Click on the link to start working with the list and do the exercises.
Irregular verbs list
Exercise 1
Exercise 2
Exercise 3
Exercise 4
Regular and irregular verbs:
Exercise 1
Exercise 2
Exercise 3