Summary of this lesson

In this lesson you should have learned…

1. how to use modal verbs to express obligation and freedom to act
2. how to use modal verbs to express certainty and deduction
3. how to use modal verbs to express ability
4. how to use modal verbs in their past, present and future forms
5. that some modal verbs cannot be used in the past or the future
6. that some modal verbs can express a number of different concepts

Now take the end of lesson review