Question

Найдите ошибки и исправьте
1 You don’t can go to the party.
2 He musts take his dog for a walk.
3 I can to help you.
4 He not must be late.
5 Can his brother speaks French?
6 Paul must to go there.
7 You don’t must smoke here.
8 Actors may learn a lot of dialogues by heart.
9 Your glass is empty. Must I refill it?
10 Would I introduce Mr. Brown to you?
11 My sister can to play a few musical instruments.
12 Some years ago I didn’t can speak English.

Answer 1

1. You can't go to the party. ('can'-модальный глагол и может справляться без 'do'.)
2. He must take his dog for a walk. (В конце модальных гл.-ов не нужно окончание "-s" для 3 л., ед. ч.)
3. I can help you.  (после модальных гл.-ов не используется инфинитив)
4. He must not be late. ('must' в отрицании выглядит как 'mustn't')
5. Can his brother speak French? (см. 2)
6. Paul must go there. (см. 3)
7. You must not smoke here. (см. 4)
8. Actors can learn a lot of dialogues by heart. (уместно использовать 'can')
9. Your glass is empty. Can I refill it? (см. 8)
10. Might I introduce Mr. Brown to you? (уместно использовать 'might')
11. My sister can play a few musical instruments. (см. 3)
12. Some years ago I couldn't speak English. (см. 1)

You are welcome!)