内容正文:
2025-2026学年一线教师制作新教材英语核心题型讲通练透系列资料,名师甄选!
2025-2026学年一线教师制作新教材英语核心题型讲通练透系列资料,名师甄选!
学校:___________姓名:___________班级:___________考号:___________
Unit 4 Helping out
单元Grammar:表“推测”的常用情态动词易错题精练50题
语
法
精
讲
一、表「肯定推测」(可能性 90%+)
must
用法:must + 动词原形(仅用于肯定句,否定 / 疑问不用)
例句:He must be at home. 他一定在家。
备注:无过去式,表过去肯定推测用 must have + 过去分词(拓展,初中了解)
二、表「不确定推测」(可能性 30%-80%)
1. may
用法:may + 动词原形
例句:She may go to the park. 她可能去公园了。
否定:may not(可能不),例句:He may not come. 他可能不来。
2. might
用法:might + 动词原形
特点:可能性比 may 稍弱,可用于过去 / 现在推测
例句:It might rain tomorrow. 明天可能会下雨。
3. could
用法:could + 动词原形
特点:可能性与 may/might 相近,语气更委婉
例句:They could be late for class. 他们上课可能会迟到。
注意:与 can 表 “能力” 区分,此处仅表推测
三、表「否定推测」(可能性 0%)
can't
用法:can't + 动词原形(否定句专用,对应肯定 must)
例句:It can't be true. 这不可能是真的。
备注:mustn’t 不表推测,表 “禁止”,切勿混淆!
❌ He mustn’t be ill. ✅ He can't be ill. 他不可能生病了。
四、初中核心易错点
1.推测时均用「动词原形」,无三单 / 时态变化(除拓展的 must have done);
2.否定推测不用 mustn’t,只用 can't;
3.may/might/could 的否定均为「情态动词 + not」,无缩写特殊形式;
4.疑问句表推测,初中常用 can/could(例:Can it be your pen? 这可能是你的笔吗?)。
五、可能性排序(从高到低)
must > may ≈ could > might > can't(否定,无可能性)
语
法
精
练
一、单项选择
1.—Where is Tom? He promised to meet us here.
—He ________ be stuck in traffic. Let’s wait for another 10 minutes.
A.must B.can C.may D.should
2.—Whose bike is this?
—It ________ be Mary’s. Her bike is blue, but this one is red.
A.mustn’t B.can’t C.may D.might
3.—Tommy, here are some boxes. What’s in the red one?
—It _________ be some gifts for the Spring Festival. Mom puts some in a red box every year.
A.must B.will C.may D.should
4.—I haven’t seen Sally for days.
—She’s just lost her job. I’m sure she ________ be busy looking for a new one.
A.can B.should C.must D.may
5.—Jack says he can write a 10,000-word report in only a few minutes.
—Is he joking? He ________ use the new AI tool—DeepSeek. He is always weak in writing.
A.may B.can C.should D.must
6.There ________ be something wrong with my car. It doesn’t work.
A.ought B.must C.need D.can
7.The notebook ________ Jim’s. It has his name on it.
A.can’t be B.mustn’t be C.may be D.must be
8.Oh, dear! Did you walk so long a way on such a hot day? You ________ be tired!
A.can B.must C.need D.should
9.—You ________ be very tired after finishing all of those hard jobs.
—Yes. I’ll take a rest and make myself relaxed.
A.may B.must C.may not D.can
10.—Look! There’s a wallet on the ground.
—It ________ be Lily’s. She lost hers this morning.
A.must B.can’t C.need D.shouldn’t
11.—Mr. Smith must have been to your home this morning.
—No, he _________, because he didn’t know my address.
A.couldn’t B.can’t C.mustn’t D.may not
12.—What’s the date for the graduation ceremony?
—It ______ be on June 25th. But I’m not sure.
A.could B.couldn’t C.must D.mustn’t
13.He ________ be the winner. He didn’t even finish the race!
A.must B.may C.needn’t D.can’t
14.—The winter holiday is coming. Where are you going for a trip?
—I ______ go to Harbin, but I’m not sure.
A.might B.must C.need D.would
15.—Look, the sky is so dark. It ________ rain soon.
—But the weather report said it is sunny the whole day.
A.can’t B.must be C.can D.might
16.—Where’s Jim?
—He _______ be in the library. But I’m not sure.
A.must B.might C.mustn’t D.can’t
17.—What’s your plan for the winter vacation?
—I’m not sure. I ________ go to Harbin to see the ice and snow festival.
A.must B.have to C.might D.should
18.—Anna, can you go to the library with me tomorrow?
—I’m not sure. I ________ visit my grandparents.
A.need B.must C.can D.might
19.Write down what you see and how you feel during the trip, or you ________ forget some of them easily.
A.must B.can C.may D.should
20.—Jane, is the art museum open tomorrow?
—I’m not sure. It ________ be open on Monday. Let’s check the website.
A.may not B.shouldn’t C.can’t D.mustn’t
21.Putting your heart into something ________ not make you succeed at once, but it’s a step in the right direction.
A.may B.must C.need D.should
22.—Where will you go during the Spring Festival?
—I have no idea. We ________ go to Qintong Ancient Town (溱潼古镇). It’s a good place to have fun.
A.may B.must C.should D.need
23.—Will the weather allow us to have the PE lesson outside this afternoon, Anna?
—It ________ be fine. But who knows how it will turn out? It’s always changing quickly.
A.must B.may C.should D.need
24.—What’s your plan for the winter holiday?
—I ________ visit my grandparents in Gaochun if I have enough time.
A.may B.must C.should D.need
25.Your answer _______ be right, but I’m going to check to make sure.
A.can’t B.may C.must D.have to
26.The weather forecast says it ________ rainy tomorrow. You’d better take an umbrella with you.
A.maybe B.may be C.may is D.might
27.I can’t find my old photo album. It ________ somewhere in my room.
A.may be B.maybe C.must be D.can be
28.The road ________ be dry, because it has just rained heavily.
A.can’t B.mustn’t C.shouldn’t D.needn’t
29.—Someone is knocking at the door. Who ________ it be?
—It ________ be Tom. He is still in the school.
A.can, mustn’t B.may, can’t C.may, couldn’t D.can, may not
30.—Is the man at the gate your math teacher Mr. Li?
—No, it________be him. Mr. Li has gone to Beijing.
A.must B.might C.can’t D.could
31.I’m sure this book ________ Li Lei’s, because there’s his name on it.
A.can’t be B.may be C.might be D.must be
32.—Why are there so many people at the crossing?
—Look! Two policemen and an ambulance are over there. I think there ________ be a traffic accident.
A.could B.can’t C.mustn’t D.must
33.This book ________ be Lucy’s. Look! Her name is on it.
A.may B.can C.must D.need
34.—Who left the present here?
—It ________ be your brother. I saw him come out of your room just now.
A.can B.might C.must D.need
35.Mary’s parents have bought a large house with a swimming pool in the city centre. It ________ be very expensive.
A.can B.must C.can’t D.mustn’t
36.A hard-working man ________ be a successful man, but a successful man ________ be a hard-working man.
A.may not; can B.can’t; may C.may not; must D.can’t; should
37.— Who is knocking at the door?
— It ________ be Tom. He said he would come at 3 p.m.
A.must B.may C.can’t D.need
38.—Whose notebook is this? It has a lovely picture on it.
—It ________ be Mary’s. She likes drawing such pictures.
A.must B.can’t C.needn’t D.shouldn’t
39.—I have something important to ask Lucy, but her phone is off.
—You ________ try her home number.
A.must B.could C.needn’t D.shouldn’t
40.We ________ get something ________ after watching the movie. I am hungry now.
A.mightn’t; to eat B.might; eating
C.couldn’t; eating D.could; to eat
41.—Listen! Is Bruce singing in the class?
—It ________ be him. But I’m not sure.
A.need B.could
C.must D.would
42.My English-Chinese dictionary has disappeared. Who ______ have taken it?
A.should B.must C.could D.would
43.—I’m feeling bad because I didn’t do well in the running race.
—That’s OK. You _______ win every time.
A.can B.may C.can’t D.mustn’t
44.—Is this bike Lucy’s?
—Well, it ________ be Lucy’s. Hers is red, but it is blue.
A.can’t B.must C.should D.needn’t
45.—Look! The man over there is wearing a strange hat. Is he Mr. Smith?
—It ________ be him. Mr. Smith has gone to Beijing on business and he won’t be back until next week.
A.mustn’t B.can’t C.needn’t D.shouldn’t
46.—I think the souvenir (纪念品) is made in France. I like it so much!
—It ________ be from foreign countries. Look! It says “Made in China”.
A.must B.mustn’t C.can’t D.could
47.I saw Wei Fang in the library just now, so she ________ be at home.
A.can’t B.mustn’t C.needn’t D.shouldn’t
48.—________ I call you this evening?
—Sure. I ________ be free after 7 o’clock, so feel free to call me then.
A.Must; must B.Should; can C.May; can D.Need; should
49.— My Chinese book is nowhere to be found. Where ______ it be?
— Is it under the sofa?
A.could B.must C.will D.need
50.They ________ play football last Friday because Simon forgot to bring his football here.
A.could B.couldn’t C.can’t D.can
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立足新教材,自学有章法,练习有重点!
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2025-2026学年一线教师制作新教材英语核心题型讲通练透系列资料,名师甄选!
2025-2026学年一线教师制作新教材英语核心题型讲通练透系列资料,名师甄选!
学校:___________姓名:___________班级:___________考号:___________
Unit 4 Helping out
单元Grammar:表“推测”的常用情态动词易错题精练50题
语
法
精
讲
一、表「肯定推测」(可能性 90%+)
must
用法:must + 动词原形(仅用于肯定句,否定 / 疑问不用)
例句:He must be at home. 他一定在家。
备注:无过去式,表过去肯定推测用 must have + 过去分词(拓展,初中了解)
二、表「不确定推测」(可能性 30%-80%)
1. may
用法:may + 动词原形
例句:She may go to the park. 她可能去公园了。
否定:may not(可能不),例句:He may not come. 他可能不来。
2. might
用法:might + 动词原形
特点:可能性比 may 稍弱,可用于过去 / 现在推测
例句:It might rain tomorrow. 明天可能会下雨。
3. could
用法:could + 动词原形
特点:可能性与 may/might 相近,语气更委婉
例句:They could be late for class. 他们上课可能会迟到。
注意:与 can 表 “能力” 区分,此处仅表推测
三、表「否定推测」(可能性 0%)
can't
用法:can't + 动词原形(否定句专用,对应肯定 must)
例句:It can't be true. 这不可能是真的。
备注:mustn’t 不表推测,表 “禁止”,切勿混淆!
❌ He mustn’t be ill. ✅ He can't be ill. 他不可能生病了。
四、初中核心易错点
1.推测时均用「动词原形」,无三单 / 时态变化(除拓展的 must have done);
2.否定推测不用 mustn’t,只用 can't;
3.may/might/could 的否定均为「情态动词 + not」,无缩写特殊形式;
4.疑问句表推测,初中常用 can/could(例:Can it be your pen? 这可能是你的笔吗?)。
五、可能性排序(从高到低)
must > may ≈ could > might > can't(否定,无可能性)
语
法
精
练
一、单项选择
1.—Where is Tom? He promised to meet us here.
—He ________ be stuck in traffic. Let’s wait for another 10 minutes.
A.must B.can C.may D.should
【答案】C
【详解】句意:——汤姆在哪里?他答应在这里见我们。——他可能堵在交通堵塞中了。我们再等10分钟吧。
考查情态动词辨析。must一定;can能;may可能;should应该。根据“He...be stuck in traffic. Let’s wait for another 10 minutes.”可知,这是对汤姆迟到原因的一种推测,并建议再等10分钟,表明说话者不确定但认为交通堵塞是一种可能性。may表达一种不确定的推测,符合语境。must强调高可能性或肯定性,不符合语境;can在肯定句中多表示能力,不常用于推测;should表示义务或预期,与推测无关。故选C。
2.—Whose bike is this?
—It ________ be Mary’s. Her bike is blue, but this one is red.
A.mustn’t B.can’t C.may D.might
【答案】B
【详解】句意:——这是谁的自行车?——不可能是玛丽的。她的自行车是蓝色的,但这辆是红色的。
考查情态动词辨析。mustn’t禁止;can’t不可能;may可能;might可能。根据“Her bike is blue, but this one is red.”可知,颜色不同,因此推断这辆自行车不可能是玛丽的。故选B。
3.—Tommy, here are some boxes. What’s in the red one?
—It _________ be some gifts for the Spring Festival. Mom puts some in a red box every year.
A.must B.will C.may D.should
【答案】A
【详解】句意:——汤米,这里有一些盒子。红色的里面是什么? ——里面一定是一些春节礼物。妈妈每年都会把一些放进一个红色盒子里。
考查情态动词。must一定;will将要;may可能;should应该。根据“Mom puts some in a red box every year.”可知,妈妈每年都会把一些礼物放进一个红色盒子里,推测盒子里一定是礼物,故选A。
4.—I haven’t seen Sally for days.
—She’s just lost her job. I’m sure she ________ be busy looking for a new one.
A.can B.should C.must D.may
【答案】C
【详解】句意:——我好几天没见到萨莉了。——她刚失去了她的工作。我肯定她一定在忙着找新工作。
考查情态动词语义辨析。can能;should应该;must一定,表示肯定推测;may可能,表示可能推测。根据“She’s just lost her job.”可知,此处是有把握的肯定推测,“must”符合语境。故选C。
5.—Jack says he can write a 10,000-word report in only a few minutes.
—Is he joking? He ________ use the new AI tool—DeepSeek. He is always weak in writing.
A.may B.can C.should D.must
【答案】D
【详解】句意:——杰克说他能在几分钟内写出一篇1万字的报告。——他在开玩笑吗?他肯定用了新的人工智能工具DeepSeek。他一直不擅长写作。
考查情态动词的用法。may可能;can可以;should应该;must一定。根据“He is always weak in writing.”可知,他写作一直很差且能在极短时间内完成长篇报告,一定是用了工具辅助。此处强调强烈的肯定推测,需用must。故选D。
6.There ________ be something wrong with my car. It doesn’t work.
A.ought B.must C.need D.can
【答案】B
【详解】句意:我的车一定是出问题了,它启动不了了。
考查情态动词。ought应该;must一定;need需要;can可能。根据“There...be something wrong with my car. It doesn’t work.”可知,车启动不了,所以此处表示十分有把握的肯定推测,用must。故选B。
7.The notebook ________ Jim’s. It has his name on it.
A.can’t be B.mustn’t be C.may be D.must be
【答案】D
【详解】句意:这个笔记本一定是吉姆的。上面有他的名字。
考查must表示推测。can’t be不可能是;mustn’t be一定不是;may be也许是;must be一定是。根据“It has his name on it.”可知,笔记本上有Jim的名字,因此一定是Jim的。故选D。
8.Oh, dear! Did you walk so long a way on such a hot day? You ________ be tired!
A.can B.must C.need D.should
【答案】B
【详解】句意:哦,天哪!在这么热的天里,你走了这么长的路吗?你一定累了!
考查动词辨析。can能,表示具备某种能力;must一定,表示非常肯定的推测;need需要;should应该,表示责任或义务。根据句意可知,说话者根据听者在这么热的天走了很长的路这一情况,非常肯定地推测听者一定累了,所以此处应该用must,表示非常肯定的推测。故选B。
9.—You ________ be very tired after finishing all of those hard jobs.
—Yes. I’ll take a rest and make myself relaxed.
A.may B.must C.may not D.can
【答案】B
【详解】句意:——做完那些艰苦的工作后,你一定很累了。——是的。我会休息一下,让自己放松。
考查动词辨析。may可能;must一定;may not可能不;can能。根据“be very tired after finishing all of those hard jobs.”可知,此处表示非常肯定的推测,应该说“你一定很累了”。故选B。
10.—Look! There’s a wallet on the ground.
—It ________ be Lily’s. She lost hers this morning.
A.must B.can’t C.need D.shouldn’t
【答案】A
【详解】句意:——看!地上有一个钱包。——它一定是莉莉的。她今天早上丢了她的钱包。
考查情态动词辨析。must一定,表肯定推测;can’t不可能,表否定推测;need需要;shouldn’t不应该。根据“She lost hers this morning.”可知,莉莉今天早上丢了钱包,所以此处是肯定推测地上的钱包是莉莉的,应该用must。故选A。
11.—Mr. Smith must have been to your home this morning.
—No, he _________, because he didn’t know my address.
A.couldn’t B.can’t C.mustn’t D.may not
【答案】A
【详解】句意:——史密斯先生今天早上一定去你家了。——不会,因为他不知道我家的地址。
考查情态动词。couldn’t不会(一般过去时);can’t不会(一般现在时);mustn’t禁止;may not可能不。根据“because he didn’t know my address”可知,表示史密斯先生不可能去我家,再根据“Mr. Smith must have been to your home this morning”可知,用过去时,故选A。
12.—What’s the date for the graduation ceremony?
—It ______ be on June 25th. But I’m not sure.
A.could B.couldn’t C.must D.mustn’t
【答案】A
【详解】句意:——毕业典礼的日期是什么时候?——可能在6月25日。但我不确定。
考查情态动词。could表示可能性,语气较委婉、不确定;couldn’t不可能;must一定,表示肯定的推测,语气非常强烈;mustn’t禁止,不允许。根据答句“But I’m not sure.”可知,这里是一种不确定的推测,应用“could”。故选A。
13.He ________ be the winner. He didn’t even finish the race!
A.must B.may C.needn’t D.can’t
【答案】D
【详解】句意:他不可能是赢家。他甚至没有完成比赛!
考查情态动词辨析。must必须;may可能;needn’t不必;can’t不可能。根据“He didn’t even finish the race”可知,他没有完成比赛,因此不可能是赢家,表示“不可能”用can’t,故选D。
14.—The winter holiday is coming. Where are you going for a trip?
—I ______ go to Harbin, but I’m not sure.
A.might B.must C.need D.would
【答案】A
【详解】句意:——寒假要来了。你要去哪里旅行?——我可能去哈尔滨,但我不确定。
考查情态动词辨析。might可能;must必须;need需要;would会。根据答语中“but I’m not sure”可知,此处表示不确定的推测,需用might,故选A。
15.—Look, the sky is so dark. It ________ rain soon.
—But the weather report said it is sunny the whole day.
A.can’t B.must be C.can D.might
【答案】D
【详解】句意:——看,天空这么暗。它可能很快要下雨。——但天气预报说今天全天都是晴天。
考查情态动词。can’t不能;must be一定是;can能;might可能。根据“the sky is so dark.”可知,天空很暗,因此推测天可能要下雨,用might表示可能的推测。故选D。
16.—Where’s Jim?
—He _______ be in the library. But I’m not sure.
A.must B.might C.mustn’t D.can’t
【答案】B
【详解】句意:——吉姆在哪里?——他可能在图书馆。但我不确定。
考查动词辨析。must必须,一定;might可能;mustn’t禁止,不准;can’t不可能。根据答语中“But I’m not sure.”可知,说话者并不肯定,表示可能性较小的推测,应用might。故选B。
17.—What’s your plan for the winter vacation?
—I’m not sure. I ________ go to Harbin to see the ice and snow festival.
A.must B.have to C.might D.should
【答案】C
【详解】句意:——寒假你有什么计划?——我不确定。我可能去哈尔滨看冰雪节。
考查情态动词辨析。must必须;have to不得不;might可能;should应该。根据答语“I’m not sure.”可知,说话者不确定,因此用表示可能性的情态动词。故选C。
18.—Anna, can you go to the library with me tomorrow?
—I’m not sure. I ________ visit my grandparents.
A.need B.must C.can D.might
【答案】D
【详解】句意:——安娜,你明天能和我一起去图书馆吗?——我不确定。我可能去看望我的祖父母。
考查情态动词辨析。need需要;must必须;can能;might可能。根据“I’m not sure”可知,说话者对计划不确定,需填入表示可能性而非确定性的情态动词,might(可能)符合语境。故选D。
19.Write down what you see and how you feel during the trip, or you ________ forget some of them easily.
A.must B.can C.may D.should
【答案】C
【详解】句意:写下你在旅途中看到的(景象)和自己的感受,否则你可能会容易忘记其中的一些。
考查情态动词may的用法。must必须;can能;may可能;should应该。根据“or you…forget some of them easily.”可知,设空处需要填入一个表达可能性的情态动词,表示“可能会”忘记,may符合题意。故选C。
20.—Jane, is the art museum open tomorrow?
—I’m not sure. It ________ be open on Monday. Let’s check the website.
A.may not B.shouldn’t C.can’t D.mustn’t
【答案】A
【详解】句意:——Jane,艺术博物馆明天开放吗?——我不确定。它星期一可能不开放。让我们查一下网站吧。
考查情态动词的用法。may not可能不;shouldn’t不应该;can’t不能;mustn’t禁止。根据“I’m not sure”可知,此处表示不确定,有可能周一不开放。表示不确定的推测用may not。故选A。
21.Putting your heart into something ________ not make you succeed at once, but it’s a step in the right direction.
A.may B.must C.need D.should
【答案】A
【详解】句意:全心全意地做某事可能不会让你立即成功,但这是朝着正确方向迈出的一步。
考查情态动词。may可能;must必须;need需要;should应该。根据“Putting your heart into something ... not make you succeed at once,”句意,前半句需表达一种非必然性的可能性,即全心投入不一定导致立即成功,与后半句的转折词“but”形成逻辑一致。情态动词may“可能”,表示一种可能性。故选A。
22.—Where will you go during the Spring Festival?
—I have no idea. We ________ go to Qintong Ancient Town (溱潼古镇). It’s a good place to have fun.
A.may B.must C.should D.need
【答案】A
【详解】句意:——春节期间你会去哪里?——我不知道。我们可能会去溱潼古镇。那是个玩乐的好地方。
考查情态动词辨析。may可能;must必须;should应该;need需要。根据“I have no idea.”可知,计划未定,去古镇只是一种可能性,应用may表示推测。故选A。
23.—Will the weather allow us to have the PE lesson outside this afternoon, Anna?
—It ________ be fine. But who knows how it will turn out? It’s always changing quickly.
A.must B.may C.should D.need
【答案】B
【详解】句意:——安娜,今天下午天气会允许我们在户外上体育课吗?——可能很好。但谁知道结果会怎样呢?它总是变化很快。
考查情态动词。must必须;may可能;should应该;need需要。根据“But who knows how it will turn out? It’s always changing quickly.”可知,表达不确定,用may表推测。故选B。
24.—What’s your plan for the winter holiday?
—I ________ visit my grandparents in Gaochun if I have enough time.
A.may B.must C.should D.need
【答案】A
【详解】句意:——你寒假有什么计划?——如果有足够的时间,我可能去高淳看望我的祖父母。
考查情态动词辨析。may可能;must必须;should应该;need需要。根据条件句“if I have enough time”可知,此处表示一种不确定的可能性,而非义务或必要性,因此用“may”表达“可能”之意。故选A。
25.Your answer _______ be right, but I’m going to check to make sure.
A.can’t B.may C.must D.have to
【答案】B
【详解】句意:你的答案可能是对的,但我要核实一下以确保无误。
考查情态动词辨析。can’t不可能;may可能;must必须;have to不得不。根据后半句“but I’m going to check to make sure”可知,前半句表示不确定的推测,意为“可能正确”。故选B。
26.The weather forecast says it ________ rainy tomorrow. You’d better take an umbrella with you.
A.maybe B.may be C.may is D.might
【答案】B
【详解】句意:天气预报说明天可能会下雨。你最好带把伞。
考查情态动词与副词辨析。maybe可能,副词;may be可能是,情态动词+be动词;may is语法错误;might可能,情态动词。空格后是形容词rainy,需用“情态动词+be”构成谓语,表示“可能是下雨的”。故选B。
27.I can’t find my old photo album. It ________ somewhere in my room.
A.may be B.maybe C.must be D.can be
【答案】A
【详解】句意:我找不到我的旧相册了。它可能在我房间的某个地方。
考查情态动词表推测的用法。may be可能是;maybe也许,副词;must be一定是;can be可能是。根据前句“找不到”可知,此处表示不太确定的推测,且空格后是地点状语,需用“情态动词may+be”结构作谓语。maybe是副词,不能作谓语,故排除B。故选A。
28.The road ________ be dry, because it has just rained heavily.
A.can’t B.mustn’t C.shouldn’t D.needn’t
【答案】A
【详解】句意:路不可能是干的,因为刚刚下过大雨。
考查情态动词辨析。can’t不可能;mustn’t禁止;shouldn’t不应该;needn’t不必。根据“because it has just rained heavily”可知,刚刚下过大雨,所以路不可能是干的,此处表示否定推测用can’t。故选A。
29.—Someone is knocking at the door. Who ________ it be?
—It ________ be Tom. He is still in the school.
A.can, mustn’t B.may, can’t C.may, couldn’t D.can, may not
【答案】B
【详解】句意:——有人在敲门。那会是谁呢?——不可能是汤姆。他还在学校。
考查情态动词表推测的用法。can能;mustn’t禁止;may可能;can’t不可能;couldn’t不可能,过去式;may not可能不。第一空表示对现在情况的推测,疑问句中常用“can”或“may”表示“可能”,但“can”更常见于疑问句和否定句,“may”多用于肯定句,此处疑问句用“can”或“may”均可。第二空根据答语“He is still in the school.”可知汤姆还在学校,因此敲门的人“不可能”是汤姆,表示否定推测用“can’t”。故选B。
30.—Is the man at the gate your math teacher Mr. Li?
—No, it________be him. Mr. Li has gone to Beijing.
A.must B.might C.can’t D.could
【答案】C
【详解】句意:——在门口的人是你的数学老师李先生么?——不,不可能是他,李先生去北京了。
考查情态动词的用法。must必须;might可能;can’t不可能;could可以。根据句意李先生去北京了,可知一定不是他。故选C。
31.I’m sure this book ________ Li Lei’s, because there’s his name on it.
A.can’t be B.may be C.might be D.must be
【答案】D
【详解】句意:我肯定这本书一定是李雷的,因为上面有他的名字。
考查情态动词辨析。can’t be不可能;may be也许;might be可能是;must be必须是。根据“I’m sure this book…Li Lei’s, because there’s his name on it.”可知,此处指的是这本书一定是李雷的。must be“一定是”,符合语境。故选D。
32.—Why are there so many people at the crossing?
—Look! Two policemen and an ambulance are over there. I think there ________ be a traffic accident.
A.could B.can’t C.mustn’t D.must
【答案】D
【详解】句意:——为什么十字路口有这么多人?——看啊!两个警察和一辆救护车在那边。我想一定发生了交通事故。
考查情态动词辨析。could能够;can’t不可能;mustn’t禁止;must一定。根据“Look! Two policemen and an ambulance are over there. I think there…be a traffic accident.”可知,此处指的是一定发生了车祸。故选D。
33.This book ________ be Lucy’s. Look! Her name is on it.
A.may B.can C.must D.need
【答案】C
【详解】句意:这本书一定是露西的。看!她的名字在上面。
考查情态动词辨析。may可能;can能够;must一定;need需要。根据“Look! Her name is on it.”可知,此处表示“书一定是露西的”,must“一定”符合句意。故选C。
34.—Who left the present here?
—It ________ be your brother. I saw him come out of your room just now.
A.can B.might C.must D.need
【答案】C
【详解】句意:——是谁把礼物留在这儿的?——一定是你哥哥。我刚才看到他从你房间出来。
考查情态动词。can可能;might也许;must一定;need需要。根据“I saw him come out of your room just now.”可知,此处表示肯定推测,must表示依据事实判断,确信某事是事实。故选C。
35.Mary’s parents have bought a large house with a swimming pool in the city centre. It ________ be very expensive.
A.can B.must C.can’t D.mustn’t
【答案】B
【详解】句意:玛丽的父母在市中心买了一栋带游泳池的大房子。那一定很贵。
考查情态动词。can能;must一定,必须;can’t不能,不可能;mustn’t禁止,不应该。根据“a large house with a swimming pool in the city centre.”可知,前面提到玛丽的父母在市中心买了一个带游泳池的大房子,按照常理推测,这样的房子肯定很贵。故选B。
36.A hard-working man ________ be a successful man, but a successful man ________ be a hard-working man.
A.may not; can B.can’t; may C.may not; must D.can’t; should
【答案】C
【详解】句意:一个勤奋的人可能不会成为一个成功的人,但是一个成功的人一定是一个勤奋的人。
考查情态动词辨析。may not可能不;can可能;can’t不可能;may可能;must必须,一定;should应该。根据“A hard-working man...be a successful man”可知,第一空表达“可能不”,用may not;根据“a successful man...be a hard-working man”第二空表达肯定的推测“一定”,用must。故选C。
37.— Who is knocking at the door?
— It ________ be Tom. He said he would come at 3 p.m.
A.must B.may C.can’t D.need
【答案】A
【详解】句意:——谁在敲门?——肯定是Tom。他说他下午3点来。
考查情态动词。must肯定;may可能;can’t不能;need需要。根据“It...be Tom. He said he would come at 3 p. m.”可知,这里表示肯定推测,用must。故选A。
38.—Whose notebook is this? It has a lovely picture on it.
—It ________ be Mary’s. She likes drawing such pictures.
A.must B.can’t C.needn’t D.shouldn’t
【答案】A
【详解】句意:——这是谁的笔记本?上面有一张可爱的图片。——它一定是玛丽的。她喜欢画这样的图片。
考查情态动词表推测的用法。must一定,表示肯定推测;can’t不可能,表示否定推测;needn’t不必,表示没有必要;shouldn’t不应该,表示不赞成。根据“She likes drawing such pictures.”可知,此处基于事实进行肯定推测。故选A。
39.—I have something important to ask Lucy, but her phone is off.
—You ________ try her home number.
A.must B.could C.needn’t D.shouldn’t
【答案】B
【详解】句意:——我有要事要问露西,但她的电话关机了。——你可以试试打她家里的电话。
考查情态动词辨析。must必须;could可以;needn’t不需要;shouldn’t不应该。根据“I have something important to ask Lucy, but her phone is off.”可知,此处表示“可以试试打她家里的电话”,故选B。
40.We ________ get something ________ after watching the movie. I am hungry now.
A.mightn’t; to eat B.might; eating
C.couldn’t; eating D.could; to eat
【答案】D
【详解】句意:看完电影我们可以去吃点东西。我现在饿了。
考查情态动词和非谓语动词。mightn’t不会;might可能,可以;couldn’t不可能;could可能,可以。根据“I am hungry now.”可知,指看完电影后可能得吃点东西。结合get sth to do sth意为“借助某物做某事”,动词不定式to eat作定语,修饰不定代词something。故选D。
41.—Listen! Is Bruce singing in the class?
—It ________ be him. But I’m not sure.
A.need B.could
C.must D.would
【答案】B
【详解】句意:——听着!布鲁斯正在班上唱歌吗?——可能是他。但我不确定。
考查情态动词表推测。need需要;could可能;must一定;would愿意,将要。根据“But I’m not sure.”可知,此处说话人不确定是不是布鲁斯。空处应用could表示“可能是他”。故选B。
42.My English-Chinese dictionary has disappeared. Who ______ have taken it?
A.should B.must C.could D.would
【答案】C
【详解】句意:我的英汉词典不见了。谁会拿走它呢?
考查动词辨析。should应该;must一定;could可能;would将。根据“Who…have taken it?”可知,此处询问谁会拿走字典,应用could,表示推测。故选C。
43.—I’m feeling bad because I didn’t do well in the running race.
—That’s OK. You _______ win every time.
A.can B.may C.can’t D.mustn’t
【答案】C
【详解】句意:——我感觉很糟糕,因为我在跑步比赛中表现得不好。——没关系。你不可能每次都赢。
考查情态动词。can可以;may可能;can’t不可能;mustn’t禁止;根据“—I’m feeling bad because I didn’t do well in the running race. —That’s OK. You...win every time.”可知,此处表达不可能每次都赢,表示能力的否定或对客观情况的否定推测,用can’t。故选C
44.—Is this bike Lucy’s?
—Well, it ________ be Lucy’s. Hers is red, but it is blue.
A.can’t B.must C.should D.needn’t
【答案】A
【详解】句意:——这是露西的自行车吗?——嗯,它不可能是露西的。她的是红色的。但它是蓝色的。
考查情态动词。can’t不可能;must必须;should应该;needn’t不必。根据“Hers is red, but it is blue.”可知,它不可能是露西的。故选A。
45.—Look! The man over there is wearing a strange hat. Is he Mr. Smith?
—It ________ be him. Mr. Smith has gone to Beijing on business and he won’t be back until next week.
A.mustn’t B.can’t C.needn’t D.shouldn’t
【答案】B
【详解】句意:——看!那边的那个男人戴着一顶奇怪的帽子。他是史密斯先生吗?——不可能是他。史密斯先生去北京出差了,要到下周才会回来。
考查情态动词的用法。mustn’t禁止;can’t不可能;needn’t不需要;shouldn’t不应该。根据下文“Mr. Smith has gone to Beijing on business and he won’t be back until next week.”可知,此处表示那个人“不可能”是史密斯先生,应该用can’t。故选B。
46.—I think the souvenir (纪念品) is made in France. I like it so much!
—It ________ be from foreign countries. Look! It says “Made in China”.
A.must B.mustn’t C.can’t D.could
【答案】C
【详解】句意:——我想纪念品是法国制造的。我非常喜欢它!——它不可能来自外国。看!上面写着“中国制造”。
考查情态动词。must一定;mustn’t禁止;can’t不可能;could能。根据“It says ‘Made in China’”可知纪念品上面写着“中国制造”,所以不可能来自外国,用can’t表示否定推测。故选C。
47.I saw Wei Fang in the library just now, so she ________ be at home.
A.can’t B.mustn’t C.needn’t D.shouldn’t
【答案】A
【详解】句意:我刚才在图书馆看到魏芳了,所以她不可能在家。
考查情态动词。can’t不可能;mustn’t禁止;needn’t不必;shouldn’t不应该。根据“I saw Wei Fang in the library just now”可知,魏芳去了图书馆,所以她不可能在家,用can’t表示否定推测。故选A。
48.—________ I call you this evening?
—Sure. I ________ be free after 7 o’clock, so feel free to call me then.
A.Must; must B.Should; can C.May; can D.Need; should
【答案】C
【详解】句意:——我今天晚上可以打电话给你吗?——当然了。我在7点后就有空了,所以那时可以随便打给我。
考查情态动词辨析。must必须;should应该;can可以,可能;may可以;need需要。根据第一空“...I call you this evening?”可知,此处表示请求,可以用may或can,但是may更正式,can常用于口语;根据第二空“...be free”可知,那时可能就有空了,填can表示可能性。故选C。
49.— My Chinese book is nowhere to be found. Where ______ it be?
— Is it under the sofa?
A.could B.must C.will D.need
【答案】A
【详解】句意:——我的中文书不见了。它会在哪里? ——它在沙发下面吗?
考查情态动词。could可能;must表示肯定;will将、会;need需要。结合上文“My Chinese book is nowhere to be found. ”可知这里是表示可能性,因此选择could可能;故选A。
50.They ________ play football last Friday because Simon forgot to bring his football here.
A.could B.couldn’t C.can’t D.can
【答案】B
【详解】句意:上周五他们不可能踢了足球,因为西蒙忘记把足球带来了。
考查情态动词。根据“last Friday”和“because Simon forgot to bring his football here”可知,是对过去进行推测,应该是说上周五他们不可能踢了足球,因此couldn’t符合句意。故选B。
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