In my opinion, a solid grasp of the tenses is absolutely crucial for those who wish to reach an intermediate level. Let's start with an overview of all 4 present tenses. In future classes, we will put the theory into practice.
Time to put the theory into practice: let's try an exercise.
Let's examine the passive forms of the tenses
Now let's revise those tricky irregular verbs
In the following lesson, we see how questions are formed in different tenses
Let's revise those past tenses with a few more exercises