Trong những câu sau đây, có một số câu chính xác và một số câu chứa một lỗi sai. Nếu câu đó đúng, hãy đánh dấu ü, nếu câu đó sai, hãy tìm và sửa lỗi sai đó. 1. You must have be surprised when you hear...

You must have be surprised when you heard the news.

Sai ở have be → phải là have been.

$⇒$ You must have been surprised when you heard the news.

2. You needn't have do all this work.

Sai ở have do → phải là have done.

$⇒$ You needn't have done all this work.

3. The window must have been broken on purpose.

$⇒$ cấu trúc must have been + V3 chuẩn.

4. You must tired after working so hard.

Sai ở must tired → phải là must be tired hoặc must have been tired (tùy thời điểm).

$⇒$  You must be tired after working so hard.

5. One of the men may have died on the mountain.

$⇒$ cấu trúc may have + V3 diễn tả khả năng quá khứ.

6. You must been driving too fast.

Sai ở must been → phải là must have been.

$⇒$ You must have been driving too fast.

7. The thief must have come in through the window.

$⇒$ cấu trúc must have + V3.

8. If he is not in the office, he must at home.

Sai ở must at home → thiếu động từ be.

$⇒$ If he is not in the office, he must be at home.