4. She quickened her pace in order that she ____ with the others.

A. may catch up                 B. might catch up

C. could have caught up         D. might have caught up

3. He ____ you more help even though he was very busy.

A. might have given    B. might give C. may have given  D. may give

2. -They were already five people in the car but they managed to take me as well. -It ___ a comfortable journey.

A. can't be     B. shouldn't be

C. mustn't have been             D. couldn't have been

1. She passed me in the street without speaking, she ____ me.

A. can't see                   B. can't have seen

C. shouldn't have seen         D. shouldn't see

7. shouldn't (oughtn't to) + have + 过去分词

1). Can (Could) they have completed their work so soon?

2). She can't (couldn't) have make a mistake.

3). Since the ditch is full of water , it ____ (rain) last night.

4). He said that she might have misunderstood him.

练习.情态动词

6. should (ought to) + have + 过去分词

4. may (might) + have + 过去分词         5. needn't + have + 过去分词

2. can't (couldn't) + have + 过去分词    3. must + have + 过去分词 

1. can(could) + have + 过去分词

9. need   1). 作为情态动词:必须      2). 作为实义动词: 需要

A.主语是人  need( to do something ; to be done by somebody)      

  B. 主语是事物    need ( doing; to be done)

1). -Do they need to take any books with them?

     -No, they don't need to.

2). -Need we buy any new equipment?     -No, we needn't.

3). This farm tool needs repairing. This farm tool needs to be repaired.   4).There is no need for him to come.

4). -Shall I tell John about it ? 

     - No, you ___ . I've told him already.

A. needn't     B. wouldn't      C. mustn't      D. shouldn't

5). It's a fine day. You ____ take a raincoat with you.

A. can't        B. mustn't        C. needn't       D. may not

2     情态动词 + 不定式的完成式是高考的考试要点