资源简介

八下情态动词 should和could的用法讲解与练习
考点①should的用法
含义 应该、可以
结构 肯定形式 should＋动词原形
否定形式 should not （shouldn’t）＋动词原形
一般疑问句及回答 Should＋主语＋动词原形＋其他？
肯定回答：Yes，主语＋should.
否定回答：No，主语＋shouldn＇t.
用法 表示义务 You should study hard as a student. 作为学生, 你应该努力学习。
表示向别人提出建议 You should go to the doctor if you feel ill. 如果你感觉不舒服，你最好去看医生。
表示可能性 She should be here any moment. 她随时都可能来。
在特殊疑问句中，should与疑问词搭配，表示惊讶，意为“竟然会”，常用于how，why等引导的特殊疑问句中 Why should you be so early today？你今天为什么来得这么早？
常见 句型 Should I clean the room？我应该打扫房间吗？
You should go to bed early. 你应该早点儿上床睡觉。
I suggest （that） you should take it easy，it’s OK.我建议你放松点儿,没事的。
My advice/ suggestion is that Nancy should go to the party with some flowers. 我的意见/建议是南希应该带些花去参加聚会。
考点②could的用法
含义 应该、可以
结构 肯定形式 could＋动词原形
否定形式 could not （couldn’t）＋动词原形
一般疑问句及回答 Could＋主语＋（please）＋动词原形＋其他？
肯定回答：Yes,主语＋can.
否定回答：No,主语＋can’t.
用法 can的过去式,表示过去的能力 He could read by himself when he was at the age of five. 他在五岁的时候就会独自读书。
表示请求、询问，语气委婉 如-Could you please take the dog for a walk？请你带狗出去散散步好吗？ -OK，but I want to watch one show first.行，但我想先看一个节目。
表示建议，语气委婉，比can更有礼貌 Maybe you could stay at home and do more things.也许你可以待在家里多做些事。
常见 句型 Could you please open the door？你可以开一下门吗？
Could I use your pencil？我可以用一下你的铅笔吗？
Maybe you could take exercise after school.也许放学后你可以锻炼一下身体。
巩固练习
一、单项选择
1.-Excuse me. Can you tell me what time it is now
-Sorry, I_________, My watch doesn't work.
A.can't B.shouldn't C.could D.should
2.Jenny finally got the job because she _________speak English well.
A. might B.must C.mustn't D.could
3.-Dick，_________I use your e-dictionary（电子词典）？
-Yes, sure. you give it to David after you use it
A.will;Would B.may;Might C.can;Could D.shall;Should
4.As the saying goes，the moon _________always be full.
A.can't B.shouldn't C.mustn't D.needn't
5.-Could I invite my friends to a party -Yes, of course you_________.
A.can B.could C.must D.should
6.If you wish, you _________come in and have a cup of coffee.
A.may B.must C.would D.should
7.-What about going swimming this afternoon
-You_________ be joking! Don't you know I'm afraid of water
A.may B.can C.must D.should
8.-Can I go fishing with you, Dad
-No, you_________. You _________stay at home and do your homework first.
A.won't; may B.can't; must C.shouldn't;ought D.needn't;should
9.The green dictionary belong to_________ .Her name is on it.
A.may;Carla's B.must;Carla C.can't;Carla D.must;Carla's
10.-I can’t stop smoking, doctor. -For your health, I'm afraid you_________
A.could B.couldn't C.must D.mustn't
11.-Mom，the train is leaving in eight minutes. I_________ go now.
-Okay, Jim, call me when you get there.
A.may B.must C.can D.should
12.- _________I have lunch now, Mom
-No. You _________wash your hands first.
A.Would; could B.May; must C.Ought to; should D.Could;may
13.You are a student. So you should know what you should do and what you ______ do in class.
A.should B.could C.shouldn't D.couldn't
14.-Must I hand in my exercise book today -No, you_________.
A.can’t B.needn’t C.mustn’t D.won’t
15.-May I have a word with you -No, you_______. I’m busy today.
A.needn’t B.wouldn’t C.don’t have to D.can’t
二、选方框内的词填空
could, might, shall, should, needn't, can't, have to, doesn't, would, must
16.Tom can sing Chinese songs, _________he
17.We_________finish our homework now because we could hand in them on next Sunday.
18.How_________he know my name I don't know him at all.
19.It's raining outside, so I_________ go thereby bus.
20. _________ you please make room for me It's too crowded in the bus.
21. _________you mind me sitting here
22.- _________we go to the theater -Good idea
23.That boy _________be Li Ming, but I'm not sure.
24.She has to stay at home, _________ she
25.I'm sure that the book _________be David's.
三、改错
26.-Might I go to play basketball with my friends -Of course you might.
______________________________________________________
27.-Must I hand in my homework now -No, you mustn't.
______________________________________________________
28.How can you know that
______________________________________________________
29.Could I borrow your bike -Of course you should.
______________________________________________________
30.-When can I come for the photos I need them tomorrow afternoon.
-They may be ready by 12:00.
______________________________________________________
31.Schools would allow students at least one hour a day for sports.
______________________________________________________
32.The basketball maybe his. He loves playing basketball.
______________________________________________________
33.-Could you please help me do my home-work -Sorry, I couldn't. You could do it by yourself.
______________________________________________________
34.In school, all the students might get on well with each other.
______________________________________________________
36.We need taking breaks because we have walked for a long time.
______________________________________________________
Keys
1-5ACCAA 6-10ACBBC 11-15BBCBD
16can’t 17.needn’t 18.should 19.have to
20. Could 21.Would 22.Shall 23.might 24.doesn’t 25.must
26.might 改为can 27.mustn’t 改为needn’t 28.can改为should 29.should 改为can
30.may改为should 31.would改为should 32.maybe改为may be 33.couldn’t 改为can’t
34.might改为should 35.need taking改为need to take

展开更多......

收起↑