Упр 3. Заполните пропуски, используя don't, doesn't, isn't, aren't или am not. 1. We... watching a television programme now. 2. We watch television every day. 3. It... raining very hard at the moment. 4. I hear you well. 5. It... rain very much in summer. 6. Mr. Johnson ... eating his lunch now. 7. Mr Johnson ... always eat at that cafe. 8. I... see any students in that room. 9. They ... like milk for lunch. 10. He have money for a new car.

1. We **aren't** watching a television programme now.
2. We **don't** watch television every day.
3. It **isn't** raining very hard at the moment.
4. I **am not** hear you well.
5. It **doesn't** rain very much in summer.
6. Mr. Johnson **is** eating his lunch now.
7. Mr. Johnson **doesn't** always eat at that cafe.
8. I **don't** see any students in that room.
9. They **don't** like milk for lunch.
10. He **doesn't** have money for a new car.

**Объяснение:**
* **isn't / aren't / am not** - используются для отрицания в Present Continuous и отрицательных утверждений с глаголом 'to be'. Выбор зависит от подлежащего: 'is not' с he, she, it, 'are not' с we, you, they и 'am not' с I.
* **don't / doesn't** - используются для отрицания в Present Simple. Выбор зависит от подлежащего: 'don't' с I, we, you, they, 'doesn't' с he, she, it.
* В предложениях 1 и 3 используется Present Continuous, поэтому отрицание строится с 'isn't / aren't'.
* В остальных предложениях используется Present Simple, так как описывается регулярное действие, или состояние. Отрицание с 'don't / doesn't'.