内容正文:
2025-2026学年八年级英语下册单元模块满分必刷题(外研版2024)
Unit 3 What makes a great team?【刷语法】(重点语法提升练)
单元语法:情态动词should must can need have to had better
should的用法
(1)should 意为“应该” ,可表示劝告、建议、义务、责任等。 如:We should protect the environment.
must的用法:
(1)must 表示主观看法,意为“必须、一定”。
如:You must stay here until I come back.在我回来之前你必须呆在这儿。
注意区分must 和have to 的区别:
1. must 侧重说话者的主观看法,认为有必要有义务去做某事。have to侧重于客观需要,含有“不得不,被迫”之意。
如:My bike was broken yesterday, so I had to walk to school. 昨天我的自行车坏了,所以我只能走路去学校。
(2) 其否定形式mustn’t表示“ 一定不要 ” “千万别” “禁止, 不许”.
如:You mustn’t play with fire. 你不许玩火
(3)对must引导的疑问句,肯定回答为must,否定回答为needn’t 或 don’t have to .
如:Must I finish my homework?我现在必须完成作业吗?—No, you needn’t.不,你不必。
(4) must表示有把握的推测,用于肯定句。如: The light is on, so he must be at home now.
can 的用法:
(1).表示能力、许可、可能性。 表示能力时一般译为“能、会”, 即有种能力,尤其是生来具备的能力,此时may 和must 均不可代替它。如:She can swim fast, but I can’t . 。I can see with my eyes.
(2).表示许可,常在口语中。如:You can use my dictionary. 你可以用我的字典。
(3).表示推测,意为“可能”, 常用于否定句和疑问句中, 此时can’t 译为“ 不可能”。 如:Can the news be true? 这个消息会是真的吗?—Can it be our teacher?那个人有可能是我们老师吗?—No, it can’t be our teacher. He is on a visit to the Great Wall.不可能。咱们老师正在游览长城呢。
need的用法:
(1)need 表示需要、必须,主要用于否定句和疑问句中,其否定形式为needn’t,意为“没有必要,不必”。 用need 提问时,肯定回答为 must,否定回答为 needn’t。
如:—Need I stay here any longer? 我还有必要留在这儿吗?—Yes, you must .是的。—No. you needn’t.
(2)need 还可以作实义动词,此时有人称、数和时态的变化,如果是人作主语后边多接动词不定式。
如:I need to do it right now. 我需要马上做这件事。
had better的用法:
had better do sth最好做某事,一般用在肯定句。如:You’d better get some sleep.
不用于疑问句。否定式:had better not do sth.
如:You’d better not waste any more of your time.
语法过关小测
满分:60分;时间:40分钟
一、单项选择(每小题1分,共60分)
1.—Mom, I have a stomachache.
—Let’s go to the hospital. You ________ eat ice-cream in winter.
A.wouldn’t B.shouldn’t C.needn’t D.don’t have to
【答案】B
【详解】句意:——妈妈,我肚子疼。——我们去医院吧。你不应该在冬天吃冰淇淋。
考查情态动词辨析。wouldn’t不会;shouldn’t不应该;needn’t不需要;don’t have to不必。根据孩子“have a stomachache”可知,母亲给出建议或告诫,认为“eat ice-cream in winter”是不恰当的行为,应用“shouldn’t”表示“不应该”。故选B。
2.—We are going to visit the National Museum of China.
—Great! We ________ follow some rules there so that others can enjoy their visit.
A.should B.may C.have to D.could
【答案】A
【详解】句意:——我们打算去参观中国国家博物馆。——太好了!我们应该遵守那里的一些规则,以便他人也能享受参观。
考查情态动词辨析。should应该;may可能;have to不得不;could可以。根据语境“so that others can enjoy their visit”可知,为了让他人也能享受参观,我们应该遵守规则,这是表达一种责任或建议,而非强制或可能性。故选A。
3.When we go to a restaurant, we ________ order less food to prevent waste of food.
A.should B.may C.have to D.must
【答案】A
【详解】句意:当我们去餐馆时,我们应该少点一些食物以防止浪费。
考查情态动词辨析。should应该;may可以;have to不得不;must必须。根据语境“to prevent waste of food”可知,强调“为了减少食物浪费”,这是一种建议或责任,因此用“应该”最符合逻辑。故选A。
4.Your personal information is very valuable. You ________ be so careless to share your ID number and bank details online.
A.might B.shouldn’t C.needn’t D.mustn’t
【答案】B
【详解】句意:你的个人信息非常重要,你不应该如此粗心地在网上分享你的身份证号码和银行信息。
考查情态动词辨析。might可能;shouldn’t不应该;needn’t不必;mustn’t禁止。根据“Your personal information is very valuable.”可知,个人信息很宝贵,不应该如此粗心地在网上分享,用shouldn’t表示劝告。故选B。
5.—Can I use my phone in class, Miss Wang?
—No, you ________ use it. It’s against the school rules.
A.might not B.needn’t C.mustn’t D.shouldn’t
【答案】C
【详解】句意:——王老师,我可以在课堂上使用手机吗?——不,你不可以使用。这违反了校规。
考查情态动词辨析。might not可能不;needn’t不必;mustn’t禁止,不可以;shouldn’t不应该。根据“It’s against the school rules.”可知,在课堂上使用手机是违反校规的,所以是禁止、不可以使用的,应该用mustn’t。故选C。
6.—Can I fish here?
—No, you ________. The sign says, “No fishing.”
A.shouldn’t B.needn’t C.may not D.mustn’t
【答案】D
【详解】句意:——我可以在这里钓鱼吗?——不,你不可以。牌子上写着“禁止钓鱼”。
考查情态动词辨析。shouldn’t不应该;needn’t不必;may not可能不;mustn’t禁止。根据“No fishing.”可知,此处表示“禁止、不允许”,语气最强。故选D。
7.You ________ smoke in the library. It’s against the rules.
A.needn’t B.mustn’t C.couldn’t
【答案】B
【详解】句意:你不得在图书馆吸烟。这是违反规定的。
考查情态动词辨析。needn’t不必;mustn’t禁止,不得;couldn’t不能。根据“It’s against the rules”可知,在图书馆吸烟是违反规定的,强调绝对禁止,因此需要用表示禁止的情态动词mustn’t。故选B。
8.According to the traffic law, children under 12 ________ ride bicycles on the road.
A.won’t B.wouldn’t C.needn’t D.mustn’t
【答案】D
【详解】句意:根据交通法,12岁以下的儿童禁止在路上骑自行车。
考查情态动词辨析。won’t不会;wouldn’t不会;needn’t不需要;mustn’t禁止。根据交通法规,12岁以下儿童在路上骑自行车是被明确禁止的,因此应选择表示强烈禁止含义的mustn’t。故选D。
9.You ________ be quiet in the library. It’s a rule.
A.can B.may C.must D.could
【答案】C
【详解】句意:你在图书馆必须保持安静。这是一条规定。
考查情态动词辨析。can能;may可以;must必须;could能。根据“It’s a rule.”可知,图书馆规则强调义务和必要性,需用表示强制的must表达“必须”的含义。故选C。
10.—I’m afraid you ________ apologize for what you said earlier if you want to stay in this club.
—I’m really sorry, and I’ll make it right.
A.must B.can C.may D.would
【答案】A
【详解】句意:——如果你想留在这个俱乐部,恐怕你必须为之前说的话道歉。——真的很抱歉,我会改正的。
考查情态动词辨析。must必须;can能够;may可能;would将会。根据“if you want to stay in this club”可知,道歉是“必须”的条件。故选A。
11.— Mom, ________ you go shopping with me this Sunday?
— I’m afraid not. I ________ look after your grandma. You can go with your sister.
A.can; have to B.can; can C.must; have to D.should; may
【答案】A
【详解】句意:——妈妈,这个星期天你能和我一起去购物吗?——恐怕不行。我必须照顾你奶奶,你可以和你姐姐去。
考查情态动词辨析。can能;must必须;should应该;have to不得不。根据 “Mom, …you go shopping with me this Sunday?” 可知,这是孩子在礼貌地请求妈妈陪同,用can表示 “能够、可以”,语气委婉,符合请求的语境。 根据 “I’m afraid not. I…look after your grandma.” 可知,妈妈是因为客观原因(需要照顾奶奶)不能去,have to 强调 “不得不、必须”。故选A。
12.— Can you go shopping with me this afternoon?
— Sorry, I can’t. I _________ do my homework first.
A.have to B.can C.may
【答案】A
【详解】句意:——今天下午你能和我一起去购物吗? ——对不起,我不能。我必须先做作业。
考查情态动词辨析。have to必须,强调客观必要性;can能,强调能力; may可能,强调可能性。根据“Sorry, I can’t”,可知拒绝邀请后需解释原因,表达做作业的必要性,而非能力或可能性。故选A。
13.You ________ tidy up the room now. You can do it later.
A.haven’t to B.needn’t to C.don’t need D.don’t have to
【答案】D
【详解】句意:你现在不必整理房间。可以稍后再做。
考查情态动词辨析。haven’t to不正确表达;needn’t to不正确表达;don’t need不需要,need作实义动词时,否定形式为don’t need to do sth.;don’t have to不必。根据“You can do it later”可知,此处表示“不必现在做”,用don’t have to表示“没有必要”。故选D。
14.He ________ finish his homework before 9:00 p.m.
A.have to B.has to C.must to D.need to
【答案】B
【详解】句意:他必须在晚上9点前完成他的家庭作业。
考查情态动词的用法。have to用于第一人称,第二人称或复数主语;has to 是have to的第三人称单数形式;must to错误,因“must”后直接接动词原形,不加“to”;need to作为实义动词时,第三人称单数应加“s”变为“needs to”,但选项未体现,故错误。主语“He”为第三人称单数,需用“has to”表示“必须”。故选B。
15.You _________ return the book to the library by Friday, or you _________ pay a fine.
A.must; have to B.can; must C.may; will D.should; might
【答案】A
【详解】句意:你必须在星期五之前把书归还给图书馆,否则你将不得不支付罚款。
考查情态动词辨析。must必须,强调主观上的必要性;have to不得不,强调客观上的必要性;can能,可以;may可以,可能;will将会;should应该;might可能。根据“return the book to the library by Friday”可知,这里表示图书馆的规定:周五前还书是“必须”(主观必要性)履行的义务,否则后果是“必须”(客观结果)支付罚款。故选A。
16.He ________ go to the market himself because he can buy things online.
A.have to B.has to C.don’t have to D.doesn’t have to
【答案】D
【详解】句意:他不必自己去市场,因为他可以在网上买东西。
考查have to的用法和主谓一致。have to必须;has to必须,have to的第三人称单数形式;don’t have to不必;doesn’t have to不必,是don’t have to的第三人称单数形式。根据“because he can buy things online”可知,他可以在网上买东西,不必亲自去市场,主语He是第三人称单数,要用doesn’t have to。故选D。
17.________ you show me the way to the zoo? I’m new here.
A.Can B.Must C.Need D.Shall
【答案】A
【详解】句意:你能告诉我去动物园的路吗?我是新来的。
考查情态动词。Can能;Must必须;Need需要;Shall将。根据“... you show me the way to the zoo”可知,此处是礼貌地请求对方帮助指路,用Can表示。故选A。
18.I won’t promise anything, but I’ll do what I ________.
A.can B.may C.must D.need
【答案】A
【详解】句意:我不会承诺任何事情,但我会做我能做的。
考查情态动词辨析。can能;may可能;must必须;need需要。根据句意,此处表示“做我能够做的事”,强调能力或可能性,应使用can。故选A。
19.Nowadays, some robots are human-like. They ________ walk, dance and chat with people.
A.may B.can C.must D.should
【答案】B
【详解】句意:如今,一些机器人是类人的。它们能够走路、跳舞和与人聊天。
考查情态动词辨析。may可能;can能够;must必须;should应该。根据句意,句子描述机器人具备走路、跳舞等能力,强调“能够”做这些动作,因此应使用表示能力的can。故选B。
20.—Dad, ________ I join the community clean-up this weekend?
—Of course you can. I’m proud of you!
A.can B.must C.need D.should
【答案】A
【详解】句意:——爸爸,这个周末我能参加社区大扫除吗?——你当然可以。我为你骄傲!
考查情态动词辨析。can能,可以;must必须;need需要;should应该。根据答语“Of course you can.”可知,问句是用“can”请求对方许可。故选A。
21.—My bike is broken. ________ I borrow yours?
—Yes, you ________.
A.Could; may B.Can; could C.Could; can D.May; could
【答案】C
【详解】句意:——我的自行车坏了。我可以借你的吗?——是的,你可以。
考查情态动词辨析。Could可以,表示委婉请求;Can可以,表示能力或允许;may可以,表示允许或可能性。第一个空,根据“My bike is broken.”可知,此处是在委婉地请求借对方的自行车,所以应该用Could;第二个空,根据“Yes”可知,此处是表示允许对方借自行车,在回答以“Could”开头的疑问句时,肯定回答通常用“can”,表示“可以”。故选C。
22.We also ________ to learn how to be polite when we ask for help.
A.need B.mustn’t C.shouldn’t D.needn’t
【答案】A
【详解】句意:当我们请求帮助时,我们也需要学习如何有礼貌。
考查情态动词辨析。need需要;mustn’t不准;shouldn’t不应该;needn’t不必。根据“We also ... to learn how to be polite when we ask for help.”可知,寻求帮助时“需要”有礼貌。故选A。
23.—Must I finish the project today?
—No, you ________. You can hand it in tomorrow morning.
A.needn’t B.mustn’t C.can’t D.shouldn’t
【答案】A
【详解】句意:——我必须今天完成这个项目吗?——不,你不必。你可以明天早上交。
考查情态动词辨析。needn’t不必;mustn’t禁止;can’t不能;shouldn’t不应该。根据“No”以及“You can hand it in tomorrow morning.”可知,不必今天完成,以must开头的一般疑问句,否定回答用needn’t。故选A。
24.This matter ________ be discussed again. We have made the final decision.
A.mustn’t B.shouldn’t C.needn’t D.can’t
【答案】C
【详解】句意:这件事不必再讨论了。我们已经做出了最终决定。
考查动词辨析。mustn’t禁止;shouldn’t不应该;needn’t不必;can’t不能。根据“We have made the final decision.”可知,最终决定已经做出,这件事没有必要再讨论。故选C。
25.You ________ buy any more medicine—your cold is already better and you don’t need it.
A.must B.need C.needn’t D.mustn’t
【答案】C
【详解】句意:你不需要再买药了——你的感冒已经好转,而且你不需要它了。
考查情态动词辨析。must必须;need需要,作情态动词;needn’t不需要,表示没必要;mustn’t禁止,不准。根据破折号后的解释“your cold is already better and you don’t need it”可知,因为感冒好转且不需要了,所以“没必要”再买药。故选C。
26.—Mom, I want to watch the film Dead To Rights (南京照相馆) tonight.
—OK. I’ll drive you there and you ________ walk. But you ________ do your homework first.
A.don’t need; need to B.needn’t; needn’t C.needn’t; need to
【答案】C
【详解】句意:——妈妈,我今晚想看电影《南京照相馆》。——好的,我会开车送你去,你不需要走路。但你必须先做作业。
考查need作为情态动词和实义动词的用法。第一空:表示“不必走路”,因为妈妈开车送,所以不需要步行,needn’t是情态动词,其后用动词原形, don’t need中need是实义动词,其后应用动词不定式,所以A项错误;第二空:根据“But”可知,这里表示但你必须先做作业,need to do sth.“需要做某事”。故选C。
27.—My back hurts badly.
—You’d better ________ a doctor as soon as possible.
A.see B.to see C.seeing D.saw
【答案】A
【详解】句意:——我的背疼得厉害。——你最好尽快去看医生。
考查情态动词。固定句型“had better do sth.”意为“最好做某事”,后接动词原形。故选A。
28.You had better ________ too many questions at one time.
A.not ask B.don't ask C.not to ask D.not asking
【答案】A
【详解】句意:你最好不要一次问太多问题。
考查had better的用法。had better意为“最好”,后接动词原形,其否定形式为“had better not do sth.”,即在动词原形前加not。故选A。
29.—I feel a bit tired. I think I need a break.
—You ________ listen to some light music. It might help you relax.
A.had better B.are able to C.used to D.have to
【答案】A
【详解】句意:——我感觉有点累。我觉得我需要休息一下。——你最好听一些轻音乐。它可能帮助你放松。
考查情态动词。had better最好;are able to能够;used to过去经常常;have to不得不。根据“listen to some light music. It might help you relax.”可知,此处是建议对方听轻音乐,用had better。故选A。
30.You ________ swim in that river. It’s too deep and dangerous.
A.had better B.would better not C.had better not D.would better
【答案】C
【详解】句意:你最好不要在那条河里游泳。它太深太危险了。
考查情态动词短语辨析。had better最好;would better not错误表达;had better not最好不要;would better错误表达。根据“It’s too deep and dangerous.”可知,此处表示最好不要在那条河里游泳,had better not do sth.“最好不做某事”。故选C。
31.Friends ________ always be honest with each other in order to build trust.
A.need B.had better C.will D.can
【答案】B
【详解】句意:为了建立信任,朋友之间最好彼此诚实。
考查情态动词辨析。need需要;had better最好;will将会;can能够。根据“in order to build trust”可知,此处表示建议或推荐。故选B。
32.—Tom, you look tired. You had better ________ up late at night.
—Yes. I ________ go to bed earlier.
A.not to stay; must B.not staying; can C.not stay; should D.to not stay; need
【答案】C
【详解】句意:——Tom,你看起来很累。你最好晚上不要熬夜。——是的,我应该早点睡觉。
考查had better的用法和情态动词辨析。not to stay不定式否定形式;not staying错误结构;not stay不带to的不定式否定;to not stay错误结构。must必须;can能;should应该;need需要。根据“—Tom, you look tired. You had better…up late at night. —Yes. I…go to bed earlier.”可知,这里是had better not do sth表示“最好不要做某事”,故第一个空填not stay;第二个空表示建议,should,表示“应该”符合语境。故选C。
33.You ________ eat too much candy—it’s bad for your teeth.
A.shouldn’t B.should C.needn’t D.must
【答案】A
【详解】句意:你不应该吃太多糖果——这对你的牙齿不好。
考查情态动词辨析。shouldn’t不应该;should应该;needn’t不必;must必须。根据“it’s bad for your teeth”可知,吃太多糖果是不好的行为,因此应该劝告对方“不应该”这样做。故选A。
34.—________ I hand in the report after class, Mr. Smith?
—No, you needn’t. You can hand it in next Monday.
A.May B.Must C.Can D.Need
【答案】B
【详解】句意:——史密斯先生,我必须在课后交报告吗?——不必,你可以下周一交。
考查情态动词。may可以,也许,表许可或可能性;must必须,表必要或命令;can能,可以,表能力或许可;need需要,通常用于疑问句和否定句。根据答语“No, you needn’t.”可知,其对应的问句只能是由Must引导的一般疑问句(Must I...?),用于询问“我必须……吗?”,表义务或必要性,故选B。
35.—You ________ be quiet in the library. It’s a rule.
—Sorry, I won’t make noise again.
A.can B.may C.must D.could
【答案】C
【详解】句意:——你在图书馆必须保持安静。这是规定。——抱歉,我不会再制造噪音了。
考查情态动词辨析。can能;may可以;must必须;could能(过去式或委婉)。根据“It’s a rule.”可知,是强制规定,应用must。故选C。
36.Sir, look at the sign . You ______ take photos in the museum.
A.could B.may C.mustn’t D.needn’t
【答案】C
【详解】句意:先生,看这个标志。在博物馆里你禁止拍照。
考查情态动词辨析。could能,可以;may也许,可能;mustn’t禁止;needn’t不必。根据“look at the sign”以及标志可知,博物馆里禁止拍照,“mustn’t”符合语境。故选C。
37.You ________ finish the report today. Mr. Smith said we could hand it in next Monday.
A.can’t B.mustn’t C.needn’t D.shouldn’t
【答案】C
【详解】句意:你不必今天完成报告。史密斯先生说我们可以下周一交。
考查情态动词辨析。can’t不能;mustn’t禁止;needn’t不必;shouldn’t不应该。根据“we could hand it in next Monday”可知,今天“不必”完成。故选C。
38.Tom _________ to go far if he _________ some help. Our house is next to his.
A.doesn’t need; need B.needn’t; needs C.doesn’t need; needs
【答案】C
【详解】句意:如果汤姆需要一些帮助,他不需要走远。我们的房子就在他家旁边。
考查need的用法辨析。第一个空后接to go far,需用实义动词形式,Tom是第三人称单数,因此否定式为“doesn't need”;第二个空he是第三人称单数,且some help为名词,需用实义动词needs。故选C。
39.—Mom, must I do my homework now?
—No, you ______. You can take a rest first.
A.mustn’t B.shouldn’t C.don’t have to
【答案】C
【详解】句意:——妈妈,我必须现在做作业吗?——不,你不必。你可以先休息一下。
考查情态动词辨析。mustn’t禁止;shouldn’t不应该;don’t have to不必。根据“No”和“You can take a rest first.”可知,此处表示“不必”现在做作业,所以应该用don’t have to,must提问时,否定答语用don’t have to或needn’t。故选C。
40.— Mom, ________ you go shopping with me this Sunday?
— I’m afraid not. I ________ look after your grandma, You can go with your sister.
A.can; have to B.can; can C.must; have to
【答案】A
【详解】句意:——妈妈,这个周日你能和我一起去购物吗?——恐怕不行。我必须照顾你的奶奶,你可以和你姐姐一起去。
考查情态动词辨析。can可以;must必须。根据语境可知,第一空是在询问妈妈是否可以和自己一起去购物,所以应该用can;第二空是在描述妈妈必须照顾奶奶,所以应该用have to,表示客观上的必要性。故选A。
41.—Why didn’t you go to the party last night?
—Because I ________ finish my homework first.
A.had to B.could C.might D.would
【答案】A
【详解】句意:——你昨晚为什么没去参加派对?——因为我必须先完成我的家庭作业。
考查情态动词的用法。had to不得不;could能够;might可能;would将会。根据“Because I...finish my homework first.”可知,此处表示不得不先完成作业。故选A。
42.I have washed all the clothes. You ________ wash them again.
A.mustn’t B.oughtn’t to C.don’t have to D.can’t
【答案】C
【详解】句意:我已经洗了所有的衣服。你不需要再洗它们了。
考查情态动词辨析。mustn’t禁止;oughtn’t to不应该;don’t have to不必;can’t不能。根据“I have washed all the clothes”可知,衣服已经洗过,因此“不必”再洗。故选C。
43.—Why do you run so fast?
—I ______ go home early because my mother will take me to watch the Beijing opera.
A.can B.have to C.will
【答案】B
【详解】句意:——你为什么跑得这么快?——我必须早点回家,因为我妈妈要带我去看京剧。
考查情态动词辨析。 can能,可能;have to必须,强调外部原因;will将要。根据“because my mother will take me to watch the Beijing opera”可知,“妈妈带我去看京剧”这一外部事件迫使“我”必须早点回家,所以用“have to”表达必要性。故选B。
44.—Could you give me a lift? My car is broken.
—Of course I ________. It’s my pleasure to lend you a hand.
A.can B.can’t C.couldn’t D.could
【答案】A
【详解】句意:——你能载我一程吗?我的车坏了。——当然可以。帮你一把是我的荣幸。
考查情态动词的用法。can能,会;can’t不能;couldn’t不能,could的否定式;could能,会,can的过去式,或表委婉请求/许可。问句中“Could you...”是委婉请求,答语需用一般现在时的“can”回应实际的能力/许可,而非过去式,且根据“Of course”和“It’s my pleasure”可知是肯定回答。故选A。
45.—My friend Alice _________ speak English well.
—Wow, she is so great.
A.can’t B.mustn’t C.can D.must
【答案】C
【详解】句意:——我朋友Alice英语说得很好。——哇,她太棒了。
考查情态动词辨析。can’t不能;mustn’t禁止;can能;must必须。根据答语“Wow, she is so great.”可知,Alice英语说得很好,表示能力用can。故选C。
46.—Tony, would you like to go hiking with me this Sunday?
—I’d like to, but I ________. I’m going to celebrate my grandma’s birthday.
A.should B.can’t C.need D.mustn’t
【答案】B
【详解】句意:——托尼,这周日你想和我一起去远足吗?——我想去,但我不能。我要去庆祝我奶奶的生日。
考查情态动词辨析。should应该;can’t不能;need需要;mustn’t禁止,不准。根据答语“I’m going to celebrate my grandma’s birthday.”可知,托尼因为要去庆祝奶奶的生日,所以无法一同去远足,应用can’t表示“不能”。故选B。
47.We ________ clean the classroom before we leave school.
A.need to B.needs C.need D.needs to
【答案】A
【详解】句意:我们在离开学校之前需要打扫教室。
考查need的用法和主谓一致。need作为实义动词时,常用搭配是need to do sth.“需要做某事”;作为情态动词时,通常用于否定句和疑问句中,肯定句很少用。分析题干可知,此句是肯定句,need应作为实义动词,主语“We”表示复数,所以need to符合语境。故选A。
48.—Hey, Rachel. Do we have to finish our creative project today?
—No, we ________. We still have a few days left.
A.needn’t B.can’t C.shouldn’t D.mustn’t
【答案】A
【详解】句意:——嘿,Rachel。我们必须今天完成我们的创意项目吗?——不,我们不必。我们还有几天时间。
考查情态动词辨析。needn’t不必;can’t不能;shouldn’t不应该;mustn’t禁止;根据答句“We still have a few days left”(我们还有几天时间)可知,此处强调“没有必要”今天完成,而非“不能”“不应该”或“禁止”,故用“needn’t”表示“不必”。故选A。
49.—Do you have any questions about the English Speech Contest?
—Yes. ________ I use notes during my speech?
A.Must B.Should C.Can
【答案】C
【详解】句意:——关于英语演讲比赛你有什么问题吗?——有。我演讲时可以用笔记吗?
考查情态动词辨析。Must必须;Should应该;Can可以。根据“...use notes during my speech?”可知,此处是在询问在演讲时是否“可以”使用笔记,所以应该用Can。故选C。
50.The Internet in our classroom is too slow, so I ________ go to the library to study.
A.must B.can C.should D.have to
【答案】D
【详解】句意:我们教室的互联网太慢了,所以我不得不去图书馆学习。
考查情态动词的用法。must必须;can能够;should应该;have to不得不。根据“The Internet in our classroom is too slow”可知,互联网慢是客观原因,导致被迫去图书馆,强调客观必要性,因此用“have to”。故选D。
51.If you live near the shopping mall, you ________ go far to buy things.
A.have to B.don’t have to C.haven’t to D.needn’t to
【答案】B
【详解】句意:如果你住在购物中心附近,你不必走很远去买东西。
考查情态动词用法。have to必须;don’t have to不必;haven’t to和 needn’t to为错误表达。根据句意,住在购物中心附近的人不需要走很远,因此应选择表示“不必”的选项。故选B。
52.—I can’t give up smoking, Doctor Frank.
—For your health, I’m afraid you ________.
A.may B.can C.have to D.might
【答案】C
【详解】句意:——我戒不了烟,弗兰克医生。——为了你的健康,恐怕你不得不这么做。
考查情态动词的用法。may可能;can能够;have to必须,不得不;might或许。根据“For your health, I’m afraid you...”可知医生建议对方“必须”戒烟,强调必要性。故选C。
53.—All of us ________ obey the traffic rules.
—Yes, it’s our duty.
A.will B.should C.shall
【答案】B
【详解】句意:——我们所有人都应该遵守交通规则。——是的,这是我们的责任。
考查情态动词辨析。will将要;should应该;shall将,用于第一人称。根据答语“Yes, it’s our duty.”可知,遵守交通规则是一种责任和义务,因此用“应该”更符合语境。故选B。
54.We ________ not talk loudly in the school hall. It’s one of our school rules.
A.should B.can C.may D.will
【答案】A
【详解】句意:我们不应该在学校大厅大声说话。这是我们学校的规定之一。
考查情态动词辨析。should应该;can能够;may可以;will将要。根据“It’s one of our school rules.”可知是学校规定,强调规则要求,因此需用should not表示“不应该”或建议性的禁止。故选A。
55.To keep healthy, we ________ eat less junk food and take more exercise.
A.need B.must C.can D.should
【答案】D
【详解】句意:为了保持健康,我们应该少吃垃圾食品,多锻炼。
考查情态动词辨析。need需要;must必须;can可以;should应该。根据语境可知,表达健康建议时,常用“should”表示“应该”,强调建议性而非强制性或能力。故选D。
56.Sweetie, your room looks like a bomb went off in here! You ________ tidy it up right now.
A.may B.can C.should D.need
【答案】C
【详解】句意: 宝贝,你的房间看起来像被炸弹炸过一样!你应该立刻把它收拾干净。
考查情态动词辨析。may可以,表许可;can能,表能力;should应该,表建议或义务;need需要,表必要性。根据前文房间杂乱的描述,这里是表达“应该”整理房间,“should”符合语境,表达出合理的建议。故选C。
57.—I have a bad stomachache for the whole day.
—You ________ see a doctor right now.
A.can B.need C.can’t D.needn’t
【答案】B
【详解】句意:—— 我一整天都胃痛得厉害。 —— 你需要马上去看医生。
考查情态动词词义辨析。can能;need需要;can’t不能;needn’t不必。由“I have a bad stomachache for the whole day.”可知,胃痛严重,所以需要马上去看医生,“need”符合语境。故选B。
58.Actually, the students understand the rules very well, so you ________ explain further.
A.mustn’t B.needn’t C.shouldn’t D.can’t
【答案】B
【详解】句意:实际上,学生们很了解规则,所以你不必进一步解释。
考查情态动词辨析。mustn’t禁止;needn’t不必;shouldn’t不应该;can’t不能。根据上文“the students understand the rules very well,”可知,学生们已经很了解规则,因此不必再解释,应用“needn’t”。故选B。
59.—More and more students love playing computer games at weekends.
—That’s too bad. Everyone ________ be a book lover. Reading makes a full man.
A.need B.would C.should D.could
【答案】C
【详解】句意:——越来越多的学生喜欢在周末玩电脑游戏。——那太糟糕了。每个人都应该成为爱书的人。阅读使人充实。
考查情态动词辨析。need需要;would将会;should应该;could能够。根据“That’s too bad.”以及“Reading makes a full man.”可知,此处是提出建议,意为“每个人都应该成为爱书之人”。故选C。
60.People ________ talk on a mobile phone while they are driving.
A.shouldn’t B.needn’t C.can
【答案】A
【详解】句意:人们在开车时不应该用手机通话。
考查情态动词辨析。shouldn’t不应该;needn’t不需要; can可以。根据常识,开车时使用手机存在安全隐患,且许多地方法规禁止,因此表示“不应该”做此事。故选A。
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2025-2026学年八年级英语下册单元模块满分必刷题(外研版2024)
Unit 3 What makes a great team?【刷语法】(重点语法提升练)
单元语法:情态动词should must can need have to had better
should的用法
(1)should 意为“应该” ,可表示劝告、建议、义务、责任等。 如:We should protect the environment.
must的用法:
(1)must 表示主观看法,意为“必须、一定”。
如:You must stay here until I come back.在我回来之前你必须呆在这儿。
注意区分must 和have to 的区别:
1. must 侧重说话者的主观看法,认为有必要有义务去做某事。have to侧重于客观需要,含有“不得不,被迫”之意。
如:My bike was broken yesterday, so I had to walk to school. 昨天我的自行车坏了,所以我只能走路去学校。
(2) 其否定形式mustn’t表示“ 一定不要 ” “千万别” “禁止, 不许”.
如:You mustn’t play with fire. 你不许玩火
(3)对must引导的疑问句,肯定回答为must,否定回答为needn’t 或 don’t have to .
如:Must I finish my homework?我现在必须完成作业吗?—No, you needn’t.不,你不必。
(4) must表示有把握的推测,用于肯定句。如: The light is on, so he must be at home now.
can 的用法:
(1).表示能力、许可、可能性。 表示能力时一般译为“能、会”, 即有种能力,尤其是生来具备的能力,此时may 和must 均不可代替它。如:She can swim fast, but I can’t . 。I can see with my eyes.
(2).表示许可,常在口语中。如:You can use my dictionary. 你可以用我的字典。
(3).表示推测,意为“可能”, 常用于否定句和疑问句中, 此时can’t 译为“ 不可能”。 如:Can the news be true? 这个消息会是真的吗?—Can it be our teacher?那个人有可能是我们老师吗?—No, it can’t be our teacher. He is on a visit to the Great Wall.不可能。咱们老师正在游览长城呢。
need的用法:
(1)need 表示需要、必须,主要用于否定句和疑问句中,其否定形式为needn’t,意为“没有必要,不必”。 用need 提问时,肯定回答为 must,否定回答为 needn’t。
如:—Need I stay here any longer? 我还有必要留在这儿吗?—Yes, you must .是的。—No. you needn’t.
(2)need 还可以作实义动词,此时有人称、数和时态的变化,如果是人作主语后边多接动词不定式。
如:I need to do it right now. 我需要马上做这件事。
had better的用法:
had better do sth最好做某事,一般用在肯定句。如:You’d better get some sleep.
不用于疑问句。否定式:had better not do sth.
如:You’d better not waste any more of your time.
语法过关小测
满分:60分;时间:40分钟
一、单项选择(每小题1分,共60分)
1.—Mom, I have a stomachache.
—Let’s go to the hospital. You ________ eat ice-cream in winter.
A.wouldn’t B.shouldn’t C.needn’t D.don’t have to
2.—We are going to visit the National Museum of China.
—Great! We ________ follow some rules there so that others can enjoy their visit.
A.should B.may C.have to D.could
3.When we go to a restaurant, we ________ order less food to prevent waste of food.
A.should B.may C.have to D.must
4.Your personal information is very valuable. You ________ be so careless to share your ID number and bank details online.
A.might B.shouldn’t C.needn’t D.mustn’t
5.—Can I use my phone in class, Miss Wang?
—No, you ________ use it. It’s against the school rules.
A.might not B.needn’t C.mustn’t D.shouldn’t
6.—Can I fish here?
—No, you ________. The sign says, “No fishing.”
A.shouldn’t B.needn’t C.may not D.mustn’t
7.You ________ smoke in the library. It’s against the rules.
A.needn’t B.mustn’t C.couldn’t
8.According to the traffic law, children under 12 ________ ride bicycles on the road.
A.won’t B.wouldn’t C.needn’t D.mustn’t
9.You ________ be quiet in the library. It’s a rule.
A.can B.may C.must D.could
10.—I’m afraid you ________ apologize for what you said earlier if you want to stay in this club.
—I’m really sorry, and I’ll make it right.
A.must B.can C.may D.would
11.— Mom, ________ you go shopping with me this Sunday?
— I’m afraid not. I ________ look after your grandma. You can go with your sister.
A.can; have to B.can; can C.must; have to D.should; may
12.— Can you go shopping with me this afternoon?
— Sorry, I can’t. I _________ do my homework first.
A.have to B.can C.may
13.You ________ tidy up the room now. You can do it later.
A.haven’t to B.needn’t to C.don’t need D.don’t have to
14.He ________ finish his homework before 9:00 p.m.
A.have to B.has to C.must to D.need to
15.You _________ return the book to the library by Friday, or you _________ pay a fine.
A.must; have to B.can; must C.may; will D.should; might
16.He ________ go to the market himself because he can buy things online.
A.have to B.has to C.don’t have to D.doesn’t have to
17.________ you show me the way to the zoo? I’m new here.
A.Can B.Must C.Need D.Shall
18.I won’t promise anything, but I’ll do what I ________.
A.can B.may C.must D.need
19.Nowadays, some robots are human-like. They ________ walk, dance and chat with people.
A.may B.can C.must D.should
20.—Dad, ________ I join the community clean-up this weekend?
—Of course you can. I’m proud of you!
A.can B.must C.need D.should
21.—My bike is broken. ________ I borrow yours?
—Yes, you ________.
A.Could; may B.Can; could C.Could; can D.May; could
22.We also ________ to learn how to be polite when we ask for help.
A.need B.mustn’t C.shouldn’t D.needn’t
23.—Must I finish the project today?
—No, you ________. You can hand it in tomorrow morning.
A.needn’t B.mustn’t C.can’t D.shouldn’t
24.This matter ________ be discussed again. We have made the final decision.
A.mustn’t B.shouldn’t C.needn’t D.can’t
25.You ________ buy any more medicine—your cold is already better and you don’t need it.
A.must B.need C.needn’t D.mustn’t
26.—Mom, I want to watch the film Dead To Rights (南京照相馆) tonight.
—OK. I’ll drive you there and you ________ walk. But you ________ do your homework first.
A.don’t need; need to B.needn’t; needn’t C.needn’t; need to
27.—My back hurts badly.
—You’d better ________ a doctor as soon as possible.
A.see B.to see C.seeing D.saw
28.You had better ________ too many questions at one time.
A.not ask B.don't ask C.not to ask D.not asking
29.—I feel a bit tired. I think I need a break.
—You ________ listen to some light music. It might help you relax.
A.had better B.are able to C.used to D.have to
30.You ________ swim in that river. It’s too deep and dangerous.
A.had better B.would better not C.had better not D.would better
31.Friends ________ always be honest with each other in order to build trust.
A.need B.had better C.will D.can
32.—Tom, you look tired. You had better ________ up late at night.
—Yes. I ________ go to bed earlier.
A.not to stay; must B.not staying; can C.not stay; should D.to not stay; need
33.You ________ eat too much candy—it’s bad for your teeth.
A.shouldn’t B.should C.needn’t D.must
34.—________ I hand in the report after class, Mr. Smith?
—No, you needn’t. You can hand it in next Monday.
A.May B.Must C.Can D.Need
35.—You ________ be quiet in the library. It’s a rule.
—Sorry, I won’t make noise again.
A.can B.may C.must D.could
36.Sir, look at the sign . You ______ take photos in the museum.
A.could B.may C.mustn’t D.needn’t
37.You ________ finish the report today. Mr. Smith said we could hand it in next Monday.
A.can’t B.mustn’t C.needn’t D.shouldn’t
38.Tom _________ to go far if he _________ some help. Our house is next to his.
A.doesn’t need; need B.needn’t; needs C.doesn’t need; needs
39.—Mom, must I do my homework now?
—No, you ______. You can take a rest first.
A.mustn’t B.shouldn’t C.don’t have to
40.— Mom, ________ you go shopping with me this Sunday?
— I’m afraid not. I ________ look after your grandma, You can go with your sister.
A.can; have to B.can; can C.must; have to
41.—Why didn’t you go to the party last night?
—Because I ________ finish my homework first.
A.had to B.could C.might D.would
42.I have washed all the clothes. You ________ wash them again.
A.mustn’t B.oughtn’t to C.don’t have to D.can’t
43.—Why do you run so fast?
—I ______ go home early because my mother will take me to watch the Beijing opera.
A.can B.have to C.will
44.—Could you give me a lift? My car is broken.
—Of course I ________. It’s my pleasure to lend you a hand.
A.can B.can’t C.couldn’t D.could
45.—My friend Alice _________ speak English well.
—Wow, she is so great.
A.can’t B.mustn’t C.can D.must
46.—Tony, would you like to go hiking with me this Sunday?
—I’d like to, but I ________. I’m going to celebrate my grandma’s birthday.
A.should B.can’t C.need D.mustn’t
47.We ________ clean the classroom before we leave school.
A.need to B.needs C.need D.needs to
48.—Hey, Rachel. Do we have to finish our creative project today?
—No, we ________. We still have a few days left.
A.needn’t B.can’t C.shouldn’t D.mustn’t
49.—Do you have any questions about the English Speech Contest?
—Yes. ________ I use notes during my speech?
A.Must B.Should C.Can
50.The Internet in our classroom is too slow, so I ________ go to the library to study.
A.must B.can C.should D.have to
51.If you live near the shopping mall, you ________ go far to buy things.
A.have to B.don’t have to C.haven’t to D.needn’t to
52.—I can’t give up smoking, Doctor Frank.
—For your health, I’m afraid you ________.
A.may B.can C.have to D.might
53.—All of us ________ obey the traffic rules.
—Yes, it’s our duty.
A.will B.should C.shall
54.We ________ not talk loudly in the school hall. It’s one of our school rules.
A.should B.can C.may D.will
55.To keep healthy, we ________ eat less junk food and take more exercise.
A.need B.must C.can D.should
56.Sweetie, your room looks like a bomb went off in here! You ________ tidy it up right now.
A.may B.can C.should D.need
57.—I have a bad stomachache for the whole day.
—You ________ see a doctor right now.
A.can B.need C.can’t D.needn’t
58.Actually, the students understand the rules very well, so you ________ explain further.
A.mustn’t B.needn’t C.shouldn’t D.can’t
59.—More and more students love playing computer games at weekends.
—That’s too bad. Everyone ________ be a book lover. Reading makes a full man.
A.need B.would C.should D.could
60.People ________ talk on a mobile phone while they are driving.
A.shouldn’t B.needn’t C.can
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