Answer — Exercise 8
2c - Grammar in use·On Screen B1+/B2 - Student's Book
Question
Study the table. Which sentences refer to the: present? past? Which express: positive / negative deduction? uncertainty? Which modals are used for each type?
Answer
Present
- She must be tired. (positive)
- She can’t still be working. (negative)
- She may / might not have reached home yet. (uncertainty)
Past
- She must have known he wasn’t coming. (positive)
- She can’t have list the keys. (negative)
- positive = must
- negative = can’t
- uncertainty = may / might