Grade 9 Grammar Lesson 22 Must and can’t
When do we use ‘must’?
When do we use ‘can’t’?
When do we use ‘must have’ and ‘can’t have’?
- We use must to say that we feel sure something is true.
- We use can’t to say that we feel sure something is not true.
- When we are sure about a past situation, we use must have and can’t have.
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