“情態(tài)動詞+have done”的用法
“情態(tài)動詞＋have done”表示對過去情況的推測或估計，是歷年高考的熱點(diǎn)?，F(xiàn)就這一語言現(xiàn)象作如下歸納：
1． should (ought to) have＋過去分詞
表示過去應(yīng)該做而（實際）沒有做的事情,含有責(zé)備或遺憾的語氣，意為“本應(yīng)該……”；其否定形式為“should not／ought not to have ＋ 過去分詞”，表示某種行為不該發(fā)生但卻發(fā)生了。
Mr. White _____ at 8:30 for the meeting , but he didn’t’ show up. （04’廣西卷）
A. should have arrived B. should arrive
C. should have had arrived D. should be arriving
[解析]本題中的一個關(guān)鍵詞but暗示了“Mr. White按道理理應(yīng)到了，而他沒有到”。故答案選[A]。
2．needn’t have＋過去分詞
表示過去沒有必要做某事, 但實際上做了某事。
As you worked late yesterday, you_________ have come this morning. (06’陜西卷)
A. mayn’t B. can’t C. mustn’t D. needn’t
[解析] He needn't have come，表示“他本沒有必要來（實際卻來了）”，根據(jù)句意，答案應(yīng)選[D]。
[注意] He didn't need to come yesterday，意為“他昨天沒有必要來（實際也沒來）”。
3．must have＋過去分詞
用于肯定句，表示“過去一定做過某事”，表示一種很有把握的推測。
[注意] 對過去發(fā)生情況的否定推測常用can’t／couldn’t have ＋過去分詞。
I have lost one of my gloves. I ________ it somewhere . （05’北京春季）
A. must drop B. must have dropped
C. must be dropping D. must have been dropped
[解析]本題應(yīng)選B。本題的前一句說明一個結(jié)果，后一句則表示一個原因。
I _______have been more than six years old when the accident happened. （05’天津卷）
A. shouldn't B. couldn't C. mustn't D. needn't
[解析]從題意上分析，本題的前一句陳述一個理由，后一句則是由前一句得出的結(jié)論。故本題選[b] 。
4．may／might have＋過去分詞
表示對過去情況的一種不太有把握的可能性推測，表示“過去可能／大概已做了某事”；否定句表示“過去可能還沒有做某事”。
We have proved great adventurers, but we have done the greatest march ever made in the past ten years. (06’天津卷)
A. needn’t B. may not C. shouldn’t D. mustn’t Key:[b]
5．can／could have＋過去分詞
表示“過去本來可以做某事，但實際上沒有做”；否定句表示“不可能已做了某事”；疑問句表示“可能／也許已做了某事嗎？”。
--- I stayed at a hotel while in New York .
--- Oh, did you? You ＿＿＿＿ with Barbara． (NMET’98)
A. could have stayed B. could stay
C. would stay D. must have stayed Key: [A]
鞏固性練習(xí)：從A、B、C、D中選擇佳答案。
1．---You didn’t wait for Mr. Smith last night, did you?
---No, but we ______. He didn’t return home at all.
A. couldn’t have waited B. needn’t have
C. didn’t need to D. should wait
2．Harry ______ have won the Physics competition easily yesterday, but he gave up.
A. could B. might C. should D. must
3．---May I speak to your manager Mr. Smith at six o’clock tonight ?”
---“I’m sorry, Mr. Smith to a conference before then.”
A. will have gone B. had gone C. would have gone D. has gone
4．---Tom took away our teacher’s cell phone without being permitted.
--- Really? I can’t imagine that he _______ have done such a thing.
A. must B. may C. can D. should
5．--- Was it you that made the suggestion?
--- It have been. I can’t remember.
A. need B. must C. should D. may
6．The weather turned out to be fine yesterday. I_________ the trouble to carry my umbrella with me .
A. should have taken B. could have taken
C. needn't have taken D. mustn't have taken
7．He paid for a seat, when he ______ have entered free.
A. could B. would C. must D. need
8．I didn’t see her in the meeting room this morning. She at the meeting .
A. mustn’t have spoken B. mightn’t have spoken
C. can’t have spoken D. shouldn’t have spoken
9．--- Hi, is that Peter Brown?
---Sorry. You ______ the wrong number .
A. must dial B. must have dialed C. should dial D. should have dialed
10．I was on the highway when this car went past followed by a police car . They ______ at least 150 kilometers an hour .
A. should have been doing B. must have been doing
C. could have done D. would have done
Keys for reference： 1---5 CAADD 6---10 CACBB
高考“情態(tài)動詞＋have done”考點(diǎn)解析
“情態(tài)動詞＋have done”結(jié)構(gòu)是高考重要考點(diǎn)，也是較難掌握的語法項目之一，為了幫助同學(xué)們更好地掌握使用這一考點(diǎn)，下面結(jié)合近年高考試題談?wù)勂渲饕梅ā?BR> 考點(diǎn)之一：在虛擬條件句中，如果表示與過去事實相反的情況，從句中用過去完成時，而主句中則用“情態(tài)動詞＋現(xiàn)在完成時”，即：would/ could/ should/ might have done。例如：
If they had finished the work on time, they would have been praised by the manager.
If you had worked hard, you could have passed the examination.
高考題分析：
1. If it ___ for the snow, we ___ the mountain yesterday. ( MET91)
A. were not; could have climbed B. were not; could
C. had not been; could have climbed D. had not been; could climb
2. --- I stayed at a hotel while in New York. --- Oh, did you? You ___ with Barbara. (NMET98)
A. could have stay B. could stay C. would stay D. must have stay
3. Yesterday Jane walked away for discussion, otherwise, she ___ something she would regret later.( 96上海)
A. had said B. said C. might say D. might have said
答案簡析：
1. 根據(jù)信息詞yesterday可以判斷該句是表示與過去事實相反的虛擬條件句，從句中應(yīng)該用“情態(tài)動詞＋現(xiàn)在完成時”，故答案選C。
2. 本句是一個含蓄虛擬條件句，意思是：If you hadn’t stay at a hotel while in New York, you could have stayed with Barbara. 表達(dá)了與過去事實相反的情況，答案選A。
3. 本句考查的也是含蓄虛擬語氣，意思是：如果她參加了討論，她可能會說出一些后來令她后悔的話。表達(dá)了與過去事實相反的情況，故答案選D。
考點(diǎn)之二：must have done表示對過去已經(jīng)發(fā)生過的情況的肯定推測判斷，語氣較強(qiáng)，意思是“一定……、肯定……”。其否定形式分別用can’t/ couldn’t和can/ could。例如：
It must have rained last night, for the ground is wet this morning.
昨天晚上一定是下雨了，因為今晨地面是潮濕的。
She didn’t attend the lesson yesterday. She must have been ill.
她昨天沒有上課，她一定是生病了。
鞏固練習(xí)：
He ____ have completed his work, otherwise, he wouldn’t be enjoying himself by the seaside. (０５北京 ２６題)
A. should B. must C. wouldn’t D. can’t
This cake is very sweet. You ___ a lot of sugar in it. (05 遼寧 26題)
Ａ. Should put B. could have put C. might put D. must have put
--- Tom is never late for work. Why is he absent today?
--- Something ___ to him. ( 05江西 22題
A. must happen B. should have happened C. could have happened
D. must have happened
I was on the highway when this car went past followed by a police car. They ___ at least 150 kilometers an hour. ( 05重慶 33題)
A. should have been doing B. must have been doing
C. could have done D. would have done
I ____ have been more than six years old when the accident happened.( 05天津 14題)
A. shouldn’t B. couldn’t C. mustn’t D. needn’t
--- Do you know where David is? I couldn’t find him anywhere. (05 湖北32題)
A. shouldn’t B. mustn’t C. can’t D. wouldn’t
1. I didn’t hear the phone. I ____ asleep. (MET 89)
A. must be B. must have been C. should be D. should have been
2. --- I rang your home yesterday. A man answered but I didn’t recognize the voice.
--- On, it ___ my brother, Peter.
A. must be B. must have been C. can have been D. might be
答案簡析：
1. 關(guān)鍵詞是didn’t，說明動作發(fā)生在過去，所以是對已經(jīng)發(fā)生過的情況的推測判斷。故答案選B。
2. 本句的意思是：我昨天朝你家里打的電話。是對過去情況的推測判斷，應(yīng)該用must have done結(jié)構(gòu)。故答案選B。
“情態(tài)動詞＋have done”結(jié)構(gòu)是高考重要考點(diǎn)，也是較難掌握的語法項目之一，下面結(jié)合近年高考試題談?wù)勂渲饕梅ā?
一、在虛擬條件句中，如果表示與過去事實相反的情況，從句用過去完成時，而主句中則用“情態(tài)動詞＋現(xiàn)在完成時”，即would/ could/ should/ might have done
例If he had worked hard, he would have passed the Collage Entrance Examination.如果他學(xué)習(xí)努力，
他就會通過高考了。
鞏固練習(xí)
1. --- I stayed at a hotel while in New York. --- Oh, did you?You ___ with Barbara. (NMET98)
A. could have stay B. could stay
C. would stay D. must have stay
2. Yesterday Jane walked away for discussion, otherwise, she ___ something she would regret later.( 96上海)
A. had said B. said
C. might say D. might have said
答案簡析
1. 答案 A本句是一個含蓄虛擬條件句，意思是：If you hadn’t stay at a hotel while in New York, you could have stayed with Barbara. 表達(dá)了與過去事實相反的情況。>
2. 答案D本句考查的也是含蓄虛擬語氣，意思是：如果她參加了討論，她可能會說出一些后來令她后悔的話。表達(dá)了與過去事實相反的情況。>
二、must have done表示對過去已經(jīng)發(fā)生過的情況的肯定推測判斷，語氣較強(qiáng)，意思是“一定……、肯定……”
例It must have rained last night, for the ground is wet this morning.昨天晚上一定是下雨了，因為今晨地面是潮濕的。
鞏固練習(xí)
1. I didn’t hear the phone. I ____ asleep. (NMET 89)
A. must be B. must have been
C. should be D. should have been
2. --- I rang your home yesterday. A man answered but I didn't recognize the voice.
--- On, it ___ my brother, Peter.
A. must be B. must have been
C. can have been D. might be
答案簡析
1. 答案B關(guān)鍵詞是didn’t，說明動作發(fā)生在過去，所以是對已經(jīng)發(fā)生過的情況的推測判斷。>
2. 答案B 本句的意思是：我昨天朝你家里打的電話。這是對過去情況的推測判斷，應(yīng)該用must have done結(jié)構(gòu)。
三、may/ might have done也用于對已經(jīng)發(fā)生過的情況的肯定推測判斷，但語氣稍弱，意思是“可能，或許……”。例如：
She didn’t get there in time. She may have missed the bus.
她沒能及時到達(dá)那兒。她可能沒趕上汽車。
He didn’t come to school today. He might have been ill.
他今天沒來上課，他可能病了。
鞏固練習(xí)：
1. Sorry, I’m late. I ____ have turned off the alarm clock and gone back to sleep again.( 2000春)
A. might B. should C. can D. will
2. The window was broken. Tom ____ have done that, for he was a little naughty.
A. could B. might C. should D. ought to
3. Yesterday, Jane walked away from the discussion. Otherwise, she ___ something she would regret later. (1996 上海)
A. had said B. said C. might say D. might have said
答案簡析：
這三句表達(dá)的都是對過去已經(jīng)發(fā)生過的情況的推測判斷，意思是“可能、或許……”，應(yīng)該用may/might have done結(jié)構(gòu)。答案分別選ABD。
三、如果對過去情況推測判斷的句子是疑問句和否定句，只能用can／could和can’t,／couldn’t。例如：
He can’t have gone abroad; I saw him an hour ago.
他不可能去國外，我一個小時前還見到他呢。
--- Can he have passed the exam? --- No, he can’t have. He didn’t work hard.
他通過考試了嗎？不，他不可能通過考試。他學(xué)習(xí)不努力。
鞏固練習(xí)：
1. --- There were already five people in the car but they managed to take me as well.
--- It ___ a comfortable journey. （MET95）
A. can’t be B. shouldn’t be C. mustn’t have been D. couldn’t have been
2. My sister met him at the Grand Theatre yesterday, so he ____ your lecture. (2002 上海)
A. couldn’t have attended B. needn’t have attended
C. mustn’t have attended D. shouldn’t have attended
3. My English-Chinese dictionary has disappeared. Who ___ have taken it? (2003 上海春招)
A. should B. must C. could D. would
4. I didn’t see her in the meeting-room this morning. She ____ at the meeting. (1995 上海)
A. mustn’t have spoken B. shouldn’t have spoken
C. needn’t have spoken D. couldn’t have spoken
答案簡析：
1、根據(jù)They were already five people in the car, but they managed to take me as well.一句中的時態(tài)，應(yīng)該是對過去情況的推測判斷，因為車上已經(jīng)有5位人了，在帶上我一個，可以斷定這一定是不舒適的旅行。所以，本句表達(dá)的是對過去否定的推測判斷，應(yīng)該用can’t/ could have done來表達(dá)。故答案選D。
2、根據(jù)句意“我妹妹昨天在大劇院見過他”，所以，一定是對過去已經(jīng)發(fā)生的否定的判斷，答案選A。
3、本句表達(dá)的是對過去發(fā)生過的情況的疑問，所以應(yīng)該用could have done，答案選C。
4、本句表達(dá)的是過去已發(fā)生情況否定的推測判斷，應(yīng)該用couldn’t have done，故答案選D。
四、含有must/ may/ might表示對過去情況推測判斷的句子，如果變成反意疑問句，反意疑問句中動詞應(yīng)與情態(tài)動詞must等后的動詞形式保持一致，用一般過去時或現(xiàn)在完成時。例如：
He must have been living here for years, hasn’t he?
他一定是在這兒住了好幾年了，是嗎？
You can’t have slept well last night, did you?
你昨天晚上沒睡好，是不是？
鞏固練習(xí)：
1: Great changes must have taken place in the village in the past few years, ____ they?
A. mustn’t B. haven’t they C. can’t D. didn’t
2. He must have lived a happy a few years ago, ____ he?
A. didn’t B. hasn’t C. mustn’t D. can’t
答案簡析：
1. 含有must表示推測判斷的句子，其反意疑問句的動詞形式應(yīng)與must后動詞時態(tài)保持
一致?？梢岳斫獬扇绻槐硎就茰y判斷，該句應(yīng)該說成：Great changes have taken place in the village in the past few year. 變成反意疑問句后應(yīng)該說成：Great changes have take place in the past few years, haven’t they? 所以，該題選B。
2. 本句中must后的動詞形式應(yīng)為did，所以，反意疑問句的動詞應(yīng)為didn’t。故答案選A。
五、should/ ought to have done表示“本來應(yīng)該做的，而實際上沒有做的事情”，其否定形式則表示“已經(jīng)做了不該做的事情”，含有責(zé)備的意思。例如：
The flowers have died. I should have watered them often.
這些花兒都死了。我本來應(yīng)該常給他們澆水的。（其實沒澆水）
You ought not to have told them the truth.
你本不應(yīng)該告訴他們真相的。（其實你告訴他們了）
鞏固練習(xí)：
1. There was a lot of fun at yesterday’s party. You ___ come, but why didn’t you? （99 上海）
A. must have B. should C. need have D. ought to have
2. Oh, I am not feeling well in the stomach, I ____ so much fried chicken just now. (2002 上海春)
A. shouldn’t eat B. mustn’t have eaten C. shouldn’t have eaten D. mustn’t eat
3. I was really anxious about you. You ___ home without a word. (NMET 2001)
A. mustn’t leave B. shouldn’t have left C. couldn’t have left D. needn’t leave
--- I’ll tell Mary about her new job tomorrow.
---You ____ her last week. (04 福建)
A. ought to tell B. would have told C. must tell D. should have told
Mr. White ____ at 8:30 for the meeting, but he didn’t show up. (04 全國)
4. Mr. White _____ at 8:30 for the meeting, but he didn’t’ show up.
A. should have arrived B. should arrive
C. should have had arrived D. should be arriving（04廣西卷）
答案簡析：
1、 本句的意思是：昨天的聚會很有意思，你本來應(yīng)該來的，可你為什么沒來？表示“本應(yīng)該做，而實際上沒有做的事情”應(yīng)該用should/ ought to have done。答案D。
2.、本句的意思是：我胃不舒服，我剛才不應(yīng)該吃那么多油炸雞。其實你吃了所以應(yīng)該選C。
3、本句表達(dá)的意思是：你不應(yīng)該一句話沒說就離開家。含有責(zé)備的意思，做了不應(yīng)該做的事情，答案選B。
六、needn’t have done表示“做了本來不必做的事情”，通常不用于肯定句。例如：
It’s only five minutes’ walk. We needn’t have taken a taxi.
只有5分鐘的步行路程，我們本不必乘出租車的。
It is warm today. You needn’t have worn your coat.
今天天氣暖和，你本來不必穿大衣的。
鞏固練習(xí)：
1. He is not poor. You ____ have lent him the money.
A. can’t B. needn’t C. couldn’t D. mustn’t
2. There was plenty of time. You ___ have hurried.
A. won’t B. mustn’t C. needn’t D. couldn’t
答案簡析：
1. 該句的意思是：他不窮，你本不必借給他錢。答案選B.
2. 該句的意思是：時間充裕著呢，你不必慌忙。答案選C。
--- Catherine, I have cleaned the room for you.
--- Thanks. you ___ it. I could manage it myself. ( 05福建 31題)
A. needn’t do B. needn’t have done C. mustn’t do D. shouldn’t have done
七、can/ could have done表示“本來能夠做而實際上沒有做的事情”。例如：
You could have come here a little earlier.
你本來可以早點(diǎn)來到這兒的。
She could have earned a lot of money.
她本來可以掙一大筆錢的。
鞏固練習(xí)：
He paid for a seat, when he ___ have entered free. (05 山東)
A. could B. would C. must D. need
1. I ____ here in time, but I met an old friend of mine. I stopped and talked with him for some time.
A. shouldn’t have come B. must have come
C. needn’t have come D. could have come
2. They ____ have finished the work yesterday, but it was raining hard.
A. must B. could C. should D. might
答案簡析：
1. 這句話的意思是：我本來可以按時來這兒的，但是遇到一位老朋友，說了會話，所以沒能及時來這兒。答案選D。
2. 該句的意思是：他們本來可以做天完成工作的，但是昨天雨下的太大，所以沒能完成。答案選B。
“情態(tài)動詞＋have done”表示對過去情況的推測或估計，是歷年高考的熱點(diǎn)?，F(xiàn)就這一語言現(xiàn)象作如下歸納：
1． should (ought to) have＋過去分詞
表示過去應(yīng)該做而（實際）沒有做的事情,含有責(zé)備或遺憾的語氣，意為“本應(yīng)該……”；其否定形式為“should not／ought not to have ＋ 過去分詞”，表示某種行為不該發(fā)生但卻發(fā)生了。
Mr. White _____ at 8:30 for the meeting , but he didn’t’ show up. （04’廣西卷）
A. should have arrived B. should arrive
C. should have had arrived D. should be arriving
[解析]本題中的一個關(guān)鍵詞but暗示了“Mr. White按道理理應(yīng)到了，而他沒有到”。故答案選[A]。
2．needn’t have＋過去分詞
表示過去沒有必要做某事, 但實際上做了某事。
As you worked late yesterday, you_________ have come this morning. (06’陜西卷)
A. mayn’t B. can’t C. mustn’t D. needn’t
[解析] He needn't have come，表示“他本沒有必要來（實際卻來了）”，根據(jù)句意，答案應(yīng)選[D]。
[注意] He didn't need to come yesterday，意為“他昨天沒有必要來（實際也沒來）”。
3．must have＋過去分詞
用于肯定句，表示“過去一定做過某事”，表示一種很有把握的推測。
[注意] 對過去發(fā)生情況的否定推測常用can’t／couldn’t have ＋過去分詞。
I have lost one of my gloves. I ________ it somewhere . （05’北京春季）
A. must drop B. must have dropped
C. must be dropping D. must have been dropped
[解析]本題應(yīng)選B。本題的前一句說明一個結(jié)果，后一句則表示一個原因。
I _______have been more than six years old when the accident happened. （05’天津卷）
A. shouldn't B. couldn't C. mustn't D. needn't
[解析]從題意上分析，本題的前一句陳述一個理由，后一句則是由前一句得出的結(jié)論。故本題選[b] 。
4．may／might have＋過去分詞
表示對過去情況的一種不太有把握的可能性推測，表示“過去可能／大概已做了某事”；否定句表示“過去可能還沒有做某事”。
We have proved great adventurers, but we have done the greatest march ever made in the past ten years. (06’天津卷)
A. needn’t B. may not C. shouldn’t D. mustn’t Key:[b]
5．can／could have＋過去分詞
表示“過去本來可以做某事，但實際上沒有做”；否定句表示“不可能已做了某事”；疑問句表示“可能／也許已做了某事嗎？”。
--- I stayed at a hotel while in New York .
--- Oh, did you? You ＿＿＿＿ with Barbara． (NMET’98)
A. could have stayed B. could stay
C. would stay D. must have stayed Key: [A]
鞏固性練習(xí)：從A、B、C、D中選擇佳答案。
1．---You didn’t wait for Mr. Smith last night, did you?
---No, but we ______. He didn’t return home at all.
A. couldn’t have waited B. needn’t have
C. didn’t need to D. should wait
2．Harry ______ have won the Physics competition easily yesterday, but he gave up.
A. could B. might C. should D. must
3．---May I speak to your manager Mr. Smith at six o’clock tonight ?”
---“I’m sorry, Mr. Smith to a conference before then.”
A. will have gone B. had gone C. would have gone D. has gone
4．---Tom took away our teacher’s cell phone without being permitted.
--- Really? I can’t imagine that he _______ have done such a thing.
A. must B. may C. can D. should
5．--- Was it you that made the suggestion?
--- It have been. I can’t remember.
A. need B. must C. should D. may
6．The weather turned out to be fine yesterday. I_________ the trouble to carry my umbrella with me .
A. should have taken B. could have taken
C. needn't have taken D. mustn't have taken
7．He paid for a seat, when he ______ have entered free.
A. could B. would C. must D. need
8．I didn’t see her in the meeting room this morning. She at the meeting .
A. mustn’t have spoken B. mightn’t have spoken
C. can’t have spoken D. shouldn’t have spoken
9．--- Hi, is that Peter Brown?
---Sorry. You ______ the wrong number .
A. must dial B. must have dialed C. should dial D. should have dialed
10．I was on the highway when this car went past followed by a police car . They ______ at least 150 kilometers an hour .
A. should have been doing B. must have been doing
C. could have done D. would have done
Keys for reference： 1---5 CAADD 6---10 CACBB
高考“情態(tài)動詞＋have done”考點(diǎn)解析
“情態(tài)動詞＋have done”結(jié)構(gòu)是高考重要考點(diǎn)，也是較難掌握的語法項目之一，為了幫助同學(xué)們更好地掌握使用這一考點(diǎn)，下面結(jié)合近年高考試題談?wù)勂渲饕梅ā?BR> 考點(diǎn)之一：在虛擬條件句中，如果表示與過去事實相反的情況，從句中用過去完成時，而主句中則用“情態(tài)動詞＋現(xiàn)在完成時”，即：would/ could/ should/ might have done。例如：
If they had finished the work on time, they would have been praised by the manager.
If you had worked hard, you could have passed the examination.
高考題分析：
1. If it ___ for the snow, we ___ the mountain yesterday. ( MET91)
A. were not; could have climbed B. were not; could
C. had not been; could have climbed D. had not been; could climb
2. --- I stayed at a hotel while in New York. --- Oh, did you? You ___ with Barbara. (NMET98)
A. could have stay B. could stay C. would stay D. must have stay
3. Yesterday Jane walked away for discussion, otherwise, she ___ something she would regret later.( 96上海)
A. had said B. said C. might say D. might have said
答案簡析：
1. 根據(jù)信息詞yesterday可以判斷該句是表示與過去事實相反的虛擬條件句，從句中應(yīng)該用“情態(tài)動詞＋現(xiàn)在完成時”，故答案選C。
2. 本句是一個含蓄虛擬條件句，意思是：If you hadn’t stay at a hotel while in New York, you could have stayed with Barbara. 表達(dá)了與過去事實相反的情況，答案選A。
3. 本句考查的也是含蓄虛擬語氣，意思是：如果她參加了討論，她可能會說出一些后來令她后悔的話。表達(dá)了與過去事實相反的情況，故答案選D。
考點(diǎn)之二：must have done表示對過去已經(jīng)發(fā)生過的情況的肯定推測判斷，語氣較強(qiáng)，意思是“一定……、肯定……”。其否定形式分別用can’t/ couldn’t和can/ could。例如：
It must have rained last night, for the ground is wet this morning.
昨天晚上一定是下雨了，因為今晨地面是潮濕的。
She didn’t attend the lesson yesterday. She must have been ill.
她昨天沒有上課，她一定是生病了。
鞏固練習(xí)：
He ____ have completed his work, otherwise, he wouldn’t be enjoying himself by the seaside. (０５北京 ２６題)
A. should B. must C. wouldn’t D. can’t
This cake is very sweet. You ___ a lot of sugar in it. (05 遼寧 26題)
Ａ. Should put B. could have put C. might put D. must have put
--- Tom is never late for work. Why is he absent today?
--- Something ___ to him. ( 05江西 22題
A. must happen B. should have happened C. could have happened
D. must have happened
I was on the highway when this car went past followed by a police car. They ___ at least 150 kilometers an hour. ( 05重慶 33題)
A. should have been doing B. must have been doing
C. could have done D. would have done
I ____ have been more than six years old when the accident happened.( 05天津 14題)
A. shouldn’t B. couldn’t C. mustn’t D. needn’t
--- Do you know where David is? I couldn’t find him anywhere. (05 湖北32題)
A. shouldn’t B. mustn’t C. can’t D. wouldn’t
1. I didn’t hear the phone. I ____ asleep. (MET 89)
A. must be B. must have been C. should be D. should have been
2. --- I rang your home yesterday. A man answered but I didn’t recognize the voice.
--- On, it ___ my brother, Peter.
A. must be B. must have been C. can have been D. might be
答案簡析：
1. 關(guān)鍵詞是didn’t，說明動作發(fā)生在過去，所以是對已經(jīng)發(fā)生過的情況的推測判斷。故答案選B。
2. 本句的意思是：我昨天朝你家里打的電話。是對過去情況的推測判斷，應(yīng)該用must have done結(jié)構(gòu)。故答案選B。
“情態(tài)動詞＋have done”結(jié)構(gòu)是高考重要考點(diǎn)，也是較難掌握的語法項目之一，下面結(jié)合近年高考試題談?wù)勂渲饕梅ā?
一、在虛擬條件句中，如果表示與過去事實相反的情況，從句用過去完成時，而主句中則用“情態(tài)動詞＋現(xiàn)在完成時”，即would/ could/ should/ might have done
例If he had worked hard, he would have passed the Collage Entrance Examination.如果他學(xué)習(xí)努力，
他就會通過高考了。
鞏固練習(xí)
1. --- I stayed at a hotel while in New York. --- Oh, did you?You ___ with Barbara. (NMET98)
A. could have stay B. could stay
C. would stay D. must have stay
2. Yesterday Jane walked away for discussion, otherwise, she ___ something she would regret later.( 96上海)
A. had said B. said
C. might say D. might have said
答案簡析
1. 答案 A本句是一個含蓄虛擬條件句，意思是：If you hadn’t stay at a hotel while in New York, you could have stayed with Barbara. 表達(dá)了與過去事實相反的情況。>
2. 答案D本句考查的也是含蓄虛擬語氣，意思是：如果她參加了討論，她可能會說出一些后來令她后悔的話。表達(dá)了與過去事實相反的情況。>
二、must have done表示對過去已經(jīng)發(fā)生過的情況的肯定推測判斷，語氣較強(qiáng)，意思是“一定……、肯定……”
例It must have rained last night, for the ground is wet this morning.昨天晚上一定是下雨了，因為今晨地面是潮濕的。
鞏固練習(xí)
1. I didn’t hear the phone. I ____ asleep. (NMET 89)
A. must be B. must have been
C. should be D. should have been
2. --- I rang your home yesterday. A man answered but I didn't recognize the voice.
--- On, it ___ my brother, Peter.
A. must be B. must have been
C. can have been D. might be
答案簡析
1. 答案B關(guān)鍵詞是didn’t，說明動作發(fā)生在過去，所以是對已經(jīng)發(fā)生過的情況的推測判斷。>
2. 答案B 本句的意思是：我昨天朝你家里打的電話。這是對過去情況的推測判斷，應(yīng)該用must have done結(jié)構(gòu)。
三、may/ might have done也用于對已經(jīng)發(fā)生過的情況的肯定推測判斷，但語氣稍弱，意思是“可能，或許……”。例如：
She didn’t get there in time. She may have missed the bus.
她沒能及時到達(dá)那兒。她可能沒趕上汽車。
He didn’t come to school today. He might have been ill.
他今天沒來上課，他可能病了。
鞏固練習(xí)：
1. Sorry, I’m late. I ____ have turned off the alarm clock and gone back to sleep again.( 2000春)
A. might B. should C. can D. will
2. The window was broken. Tom ____ have done that, for he was a little naughty.
A. could B. might C. should D. ought to
3. Yesterday, Jane walked away from the discussion. Otherwise, she ___ something she would regret later. (1996 上海)
A. had said B. said C. might say D. might have said
答案簡析：
這三句表達(dá)的都是對過去已經(jīng)發(fā)生過的情況的推測判斷，意思是“可能、或許……”，應(yīng)該用may/might have done結(jié)構(gòu)。答案分別選ABD。
三、如果對過去情況推測判斷的句子是疑問句和否定句，只能用can／could和can’t,／couldn’t。例如：
He can’t have gone abroad; I saw him an hour ago.
他不可能去國外，我一個小時前還見到他呢。
--- Can he have passed the exam? --- No, he can’t have. He didn’t work hard.
他通過考試了嗎？不，他不可能通過考試。他學(xué)習(xí)不努力。
鞏固練習(xí)：
1. --- There were already five people in the car but they managed to take me as well.
--- It ___ a comfortable journey. （MET95）
A. can’t be B. shouldn’t be C. mustn’t have been D. couldn’t have been
2. My sister met him at the Grand Theatre yesterday, so he ____ your lecture. (2002 上海)
A. couldn’t have attended B. needn’t have attended
C. mustn’t have attended D. shouldn’t have attended
3. My English-Chinese dictionary has disappeared. Who ___ have taken it? (2003 上海春招)
A. should B. must C. could D. would
4. I didn’t see her in the meeting-room this morning. She ____ at the meeting. (1995 上海)
A. mustn’t have spoken B. shouldn’t have spoken
C. needn’t have spoken D. couldn’t have spoken
答案簡析：
1、根據(jù)They were already five people in the car, but they managed to take me as well.一句中的時態(tài)，應(yīng)該是對過去情況的推測判斷，因為車上已經(jīng)有5位人了，在帶上我一個，可以斷定這一定是不舒適的旅行。所以，本句表達(dá)的是對過去否定的推測判斷，應(yīng)該用can’t/ could have done來表達(dá)。故答案選D。
2、根據(jù)句意“我妹妹昨天在大劇院見過他”，所以，一定是對過去已經(jīng)發(fā)生的否定的判斷，答案選A。
3、本句表達(dá)的是對過去發(fā)生過的情況的疑問，所以應(yīng)該用could have done，答案選C。
4、本句表達(dá)的是過去已發(fā)生情況否定的推測判斷，應(yīng)該用couldn’t have done，故答案選D。
四、含有must/ may/ might表示對過去情況推測判斷的句子，如果變成反意疑問句，反意疑問句中動詞應(yīng)與情態(tài)動詞must等后的動詞形式保持一致，用一般過去時或現(xiàn)在完成時。例如：
He must have been living here for years, hasn’t he?
他一定是在這兒住了好幾年了，是嗎？
You can’t have slept well last night, did you?
你昨天晚上沒睡好，是不是？
鞏固練習(xí)：
1: Great changes must have taken place in the village in the past few years, ____ they?
A. mustn’t B. haven’t they C. can’t D. didn’t
2. He must have lived a happy a few years ago, ____ he?
A. didn’t B. hasn’t C. mustn’t D. can’t
答案簡析：
1. 含有must表示推測判斷的句子，其反意疑問句的動詞形式應(yīng)與must后動詞時態(tài)保持
一致?？梢岳斫獬扇绻槐硎就茰y判斷，該句應(yīng)該說成：Great changes have taken place in the village in the past few year. 變成反意疑問句后應(yīng)該說成：Great changes have take place in the past few years, haven’t they? 所以，該題選B。
2. 本句中must后的動詞形式應(yīng)為did，所以，反意疑問句的動詞應(yīng)為didn’t。故答案選A。
五、should/ ought to have done表示“本來應(yīng)該做的，而實際上沒有做的事情”，其否定形式則表示“已經(jīng)做了不該做的事情”，含有責(zé)備的意思。例如：
The flowers have died. I should have watered them often.
這些花兒都死了。我本來應(yīng)該常給他們澆水的。（其實沒澆水）
You ought not to have told them the truth.
你本不應(yīng)該告訴他們真相的。（其實你告訴他們了）
鞏固練習(xí)：
1. There was a lot of fun at yesterday’s party. You ___ come, but why didn’t you? （99 上海）
A. must have B. should C. need have D. ought to have
2. Oh, I am not feeling well in the stomach, I ____ so much fried chicken just now. (2002 上海春)
A. shouldn’t eat B. mustn’t have eaten C. shouldn’t have eaten D. mustn’t eat
3. I was really anxious about you. You ___ home without a word. (NMET 2001)
A. mustn’t leave B. shouldn’t have left C. couldn’t have left D. needn’t leave
--- I’ll tell Mary about her new job tomorrow.
---You ____ her last week. (04 福建)
A. ought to tell B. would have told C. must tell D. should have told
Mr. White ____ at 8:30 for the meeting, but he didn’t show up. (04 全國)
4. Mr. White _____ at 8:30 for the meeting, but he didn’t’ show up.
A. should have arrived B. should arrive
C. should have had arrived D. should be arriving（04廣西卷）
答案簡析：
1、 本句的意思是：昨天的聚會很有意思，你本來應(yīng)該來的，可你為什么沒來？表示“本應(yīng)該做，而實際上沒有做的事情”應(yīng)該用should/ ought to have done。答案D。
2.、本句的意思是：我胃不舒服，我剛才不應(yīng)該吃那么多油炸雞。其實你吃了所以應(yīng)該選C。
3、本句表達(dá)的意思是：你不應(yīng)該一句話沒說就離開家。含有責(zé)備的意思，做了不應(yīng)該做的事情，答案選B。
六、needn’t have done表示“做了本來不必做的事情”，通常不用于肯定句。例如：
It’s only five minutes’ walk. We needn’t have taken a taxi.
只有5分鐘的步行路程，我們本不必乘出租車的。
It is warm today. You needn’t have worn your coat.
今天天氣暖和，你本來不必穿大衣的。
鞏固練習(xí)：
1. He is not poor. You ____ have lent him the money.
A. can’t B. needn’t C. couldn’t D. mustn’t
2. There was plenty of time. You ___ have hurried.
A. won’t B. mustn’t C. needn’t D. couldn’t
答案簡析：
1. 該句的意思是：他不窮，你本不必借給他錢。答案選B.
2. 該句的意思是：時間充裕著呢，你不必慌忙。答案選C。
--- Catherine, I have cleaned the room for you.
--- Thanks. you ___ it. I could manage it myself. ( 05福建 31題)
A. needn’t do B. needn’t have done C. mustn’t do D. shouldn’t have done
七、can/ could have done表示“本來能夠做而實際上沒有做的事情”。例如：
You could have come here a little earlier.
你本來可以早點(diǎn)來到這兒的。
She could have earned a lot of money.
她本來可以掙一大筆錢的。
鞏固練習(xí)：
He paid for a seat, when he ___ have entered free. (05 山東)
A. could B. would C. must D. need
1. I ____ here in time, but I met an old friend of mine. I stopped and talked with him for some time.
A. shouldn’t have come B. must have come
C. needn’t have come D. could have come
2. They ____ have finished the work yesterday, but it was raining hard.
A. must B. could C. should D. might
答案簡析：
1. 這句話的意思是：我本來可以按時來這兒的，但是遇到一位老朋友，說了會話，所以沒能及時來這兒。答案選D。
2. 該句的意思是：他們本來可以做天完成工作的，但是昨天雨下的太大，所以沒能完成。答案選B。