The other extreme
Comprehensibility
Include such thingings as basic verbs forms, interrogative and negative structures, the use of the main tenses, and modal auxiliaries.
Some activities that are useful for that are: Students are going to find out the structure of the tense. another activity is to write sentenses with different tenses to create their own profile using the simple past, simple present, present perfect, present progressive and the futures and also they should include modals, and passive voice