Unit 8 It must belong to Carla.基础知识

Unit 8 it must belong to Carla.
★Phrases(熟记版)
Section A
1.belong to属于
2.at the picnic在野餐
3.go to the concert去听音乐会
attend a concert参加音乐会
4.in the music hall 在音乐大厅
5. anything valuable 值钱的东西
something unusual 不寻常的东西
something strange 奇怪的东西
6. the rest of….其余（剩余）的人或物
7. pick up 捡起
8.in the neighborhood在社区（邻近地区）
next-door neighbor 隔壁邻居
9.have fun doing sth. 做某事有乐趣
10. call the police\policeman 报警
11.at first 首先
12.run after 追逐、追赶
13. make noise(可数)吵闹
14. in the laboratory 在实验室
Section B
15.catch a bus赶公共汽车
16. express a different 表达一种不同
17. at the same time 同时
18. not only…but also…不但…而且…
municate with sb.和……交流
20. point out指出
21. in a certain way 以一种特定的方式
22.have a medical purpose 有医疗目的
23.keep healthy保持健康
24.a victory over an enemy 战神敌人
25. one of the greatest mysteries 最大的秘密之一
★Phrases(测试版I)
1.属于
2.在野餐
3.参加音乐会
4.在音乐大厅
5. 值钱的东西
6. 其余（剩余）的人或物
7. 捡起
8. 在社区（邻近地区）
9.做某事有乐趣
10. 报警
11.首先
12.追逐、追赶
13. (可数)吵闹
14.在实验室
15.赶公共汽车
16. 表达一种不同
17. 同时
18. 不但…而且…
19. 和……交流
20. 指出
21. 以一种特定的方式
22.有医疗目的
23.保持健康
24.战胜敌人
25. 最大的秘密之一
★Phrases(测试版II)
1.不但…而且…
2.同时
3.报警
4.战胜敌人
5. 不寻常的东西
6. 和……交流
7. 捡起
8. 指出
9.做某事有乐趣
10. 在社区（邻近地区）
11.以一种特定的方式
12.追逐、追赶
13. (可数)吵闹
14.保持健康
15.属于
★★Sentences(熟记版)
熟读并背诵以下句型，注意加粗及有下划线的字词。
1. Whose volleyball ( http: / / www.21cnjy.com )is this It must be Carla’s.(=It must belong to Carla.) She loves volleyball.
这是谁的排球？它肯定是卡拉的。（它肯定属于卡拉。）她喜爱排球。
2. Whose hair band is ( http: / / www.21cnjy.com ) this It could be Mei’s hair band. Or it might belong to Linda. They both have long hair.这是谁的发带？可能是梅的发带，或者也可能属于卡拉。她们两个都有长头发。
3. I think somebody must have picked it up. 我认为一定有人捡到它了
4. At first, I though ( http: / / www.21cnjy.com )t that it might be a dog, but I couldn’t see a dog, or anything else, either.
起初，我认为它可能是一只狗，但我没有看见狗，也没有看见其他任何东西。
5. ①One woman ( http: / / www.21cnjy.com ) saw something running away, but it was dark so she is not sure.
这个地方的一个女人看见有东西逃跑了，但是天黑了，所以她不确定。
②I hear water running in the bathroom 我听见浴室里的水在流。
③ People like to go ( http: / / www.21cnjy.com ) to this place especially in June as they want to see the sun rising on the longest day of the year. 人们喜欢去这个地方，尤其是在六月，因为他们想看到太阳在一年中最长的一天升起。
6. There must be something visiting the homes in our neighborhood.
一定有什么东西在拜访我们社区的人家.
7. The noise-make ( http: / / www.21cnjy.com )r is having too much fun creating fear in the neighborhood.
噪音制造者正享受着在社区制造恐惧的极大乐趣。
8. He could be running for exercise. 他跑步可能是为了锻炼身体
He might be running to catch a bus to work. 他跑步可能是为了赶公共汽车上班。
9. Stonehenge, a ( http: / / www.21cnjy.com )rock circle, is not only one of Britain’s most famous historical places, but also one of its greatest mysteries. 巨石阵,一个岩石圈,不仅是英国最著名的历史古迹之一,也是英国最大的谜团之一
10. For many years, hi ( http: / / www.21cnjy.com )storians believed Stonehenge was a temple where ancient leaders tried to
　communicate with the gods. 多年来,历史学家们认为巨石阵是个寺庙,古代的领袖试图在这里和神交流
★★Sentences(测试版I)
根据汉语提示完成句子：
this，Whose，is，volleyball __________________________________
It ,Carla, must, to, belong ________________________________.
long, They, have, hair, both ______________________________________.
picked, I, so ( http: / / www.21cnjy.com )mebody,up ,must, think,have, it ________________________________________.
running, I, bathroom,water, in,hear, the _____________________________________________.
in,be, something ,T ( http: / / www.21cnjy.com )here,the, homes, our, must, neighborhood,visiting.______________________.
work,might, to, cat ( http: / / www.21cnjy.com )ch, He,be,a, bus, to,running _____________________________________.
Where,leaders,St ( http: / / www.21cnjy.com )onehenge ,a temple, gods,ancient, tried,was ,with ,the,communicate,to ,
__________________________________________________________________.
★★Sentences(测试版II)
根据汉语提示完成句子：
Whose volleyball is this It ＿＿＿　＿＿（肯定是）Carla’s.
　　　　　　　　　　　　=It must ＿＿＿　＿＿　＿＿＿.　 （属于卡拉）
　I think somebody ＿＿＿　＿＿　＿＿＿＿ it ＿＿. （一定有人捡到它了）
　３. One woman saw ( http: / / www.21cnjy.com )something ＿＿＿＿＿　＿＿＿（逃跑）, but it was dark so she is not sure.
　４．People like to g ( http: / / www.21cnjy.com )o to this place especially in June ＿＿ （因为）they want to ＿＿ （看到）the sun 　
　　　＿＿＿ （升起）on the longest day of the year.
５. There must be something ＿＿＿＿ （拜访）the homes in our neighborhood.
６. The ＿＿＿＿＿ （噪音制造者）is ＿＿＿＿ too much ＿＿＿ ＿＿＿ fear in the 　
　　neighborhood. （正享受着在社区制造恐惧的极大乐趣）
７. He could ＿＿　＿＿＿ for exercise. （跑步）
８. Stonehenge, ( http: / / www.21cnjy.com )a rock circle, is not only one of Britain’s ＿＿＿＿　＿＿＿　＿＿＿＿ places
　（最著名的历史古迹）, but also one of its ＿＿＿　＿＿＿＿. （最大的谜团）
★★Sentences(测试版III)
根据汉语把句子补充完整：
这是谁的排球？它肯定是卡拉的。（它肯定属于卡拉。）她喜爱排球。
______volleyball ( http: / / www.21cnjy.com ) is this It _____ ___ Carla’s.(=It ____ ______ ___Carla.) She loves volleyball.
2. 这是谁的发带？可能是梅的发带，或者也可能属于卡拉。她们两个都有长头发。
Whose ______ _____ is this It _____ ___ Mei’s ____ _____. Or it might _____ ____ Linda.
They ____ _____ long hair.
3. 我认为一定有人捡到它了. I think somebody ______ _____ _______ it _____.
4. 起初，我认为它可能是一只狗，但我没有看见狗，也没有看见其他任何东西。
　＿　＿＿, I thoug ( http: / / www.21cnjy.com )ht that it＿＿＿＿　＿＿ a dog, but I couldn’t see a dog, or ＿＿＿ ___, either.
①这个地方的一个女人看见有东西逃跑了，但是天黑了，所以她不确定。
　　　One woman saw so ( http: / / www.21cnjy.com )mething ＿＿＿＿　＿＿＿＿， but it was dark so she is not sure.
②我听见浴室里的水在流。I hear water ＿＿＿＿＿ in the bathroom
③ 人们喜欢去这个地方，尤其是在六月，因为他们想看到太阳在一年中最长的一天升起。
People like to go t ( http: / / www.21cnjy.com )o this place ＿＿＿＿＿in June as they want to ＿＿the sun ＿＿＿ ＿＿ 　　
the longest day＿＿ the year.
6. 一定有什么东西在拜访我们社区的人家.
　　There ＿＿＿　＿＿ something ＿＿＿ the homes in our neighborhood.
7. 噪音制造者正享受着在社区制造恐惧的极大乐趣。
　　The noise-maker is ( http: / / www.21cnjy.com ) having ＿＿＿　＿＿＿ fun ＿＿＿＿fear in the neighborhood.
8. He ＿＿＿＿　＿＿　＿＿＿＿＿ ＿＿ exercise. 他跑步可能是为了锻炼身体
He ＿＿　＿＿　＿＿＿＿ to ＿＿＿＿a bus ＿＿work. 他跑步可能是为了赶公共汽车上班。
9. 巨石阵，一个岩石圈，不仅是英国最著名的历史古迹之一，也是英国最大的谜团之一。
Stonehenge, a rock circle, is ＿＿＿　＿＿＿ one of Britain’s ＿＿＿　＿＿＿ ＿＿＿＿＿
places, ＿＿　＿＿＿ one of its greatest ＿＿＿＿＿.
10. 多年来，历史学家们认为巨石阵是个寺庙，古代的领袖试图在这里和神交流
＿＿＿ many years, histor ( http: / / www.21cnjy.com )ians believed Stonehenge was a temple ＿＿＿ ancient leaders tried 　
to ＿＿＿＿＿＿　＿＿＿ the gods.
★★★Grammar 情态动词
情态动词的定义:表示说话人对所述动作或状态的态度或看法,表可能、需要、必须或应当之意
情态动词的特点: ① 情态动词没有人称和数的变化；
②本身有词义,不能独立作谓语, “情态动词+动词原形”做谓语
③直接参与句式的变化：提前构成疑问式；后加not构成否定式
情态动词的用法:
※1. can,could 的用法
can ① “能,会” 表示人或物本身所具有的能力: She can walk .
②表推测“可能”,常用于否定句或疑问句：That can’t be Tom;,he’s in England.
③表示“许可”时can可以和may换用，如： Can \May I go home now
Could ①could是can的过去式，She said she couldn’t swim .
②表委婉的语气, 答语 ( http: / / www.21cnjy.com )用can 或of course ：Could you help me Yes, you can./ No, you can’t.
be able to can和be able to都可表示能力;但can只有现在和过去式，be able to则有各种形式
He will be able to do the work better.
※ 2.may和might (may的过去式)的基本用法
①表示允许，用于肯定句。eg: You may come at 7:00.
②疑问句中表许可、征求意见might是may 的过去式比may语气委婉
May I come in --Yes, please. \ Certainly.
注意：may 开头的一般疑问句，肯定回答用can 否定回答要用mustn’t
---May I watch TV, mum ---Yes,you can.\No, you mustn’t.
③表示推测,语气不太确定 He may be come, but I'm not sure.
④以could/can/may /might \will开头的一般疑问句,肯定回答用 can\may ,否定回答用can’t
Could \May\Might ( http: / / www.21cnjy.com )I borrow your book 肯:Of course you can/ may. 否:No, I’m afraid you can't.
※ 3. must, have to
① must 必须, 应该,否定缩写mustn’t We must study hard at school.
②must be表“推测”, 比较 ( http: / / www.21cnjy.com )有把握 The book must be Carla's, it has her name on it.
③ must引导的一般疑问句,肯定回答用must,否定回答用needn’t
Must I finish the work today Yes, you must. \ No, you needn’t
④ must 表示“偏要”— ( http: / / www.21cnjy.com )How much money do you have —If you must know, I have two dollars.
have to 的基本用法：
must侧重说话人的主观看法,一般只用于现在时,have to 表客观需要且可用于多种时态
I must study hard. I had to stay at home because of the rain.
※4. need “需要、必须”
①need+ do ,作情态 ( http: / / www.21cnjy.com )动词时，主要用于否定句或疑问句中: You need do it now.
②need+to do, 用作实义动词时，其否定和疑问形式应借助于do\does\did:
He needs to wear the cool clothes.
③need开头的一般疑问句， 肯定回答用must，否定回答用needn’t。
Need we clea ( http: / / www.21cnjy.com )n the classroom after school Yes, you must.\ No, you needn’t
※5. shall\should, will\would 的用法
①用于第一、三人称，表征求对方的意愿或请求指示，Shall I open the door Good idea.\OK.
should表“建议”或“劝告,意为“应该” You should finish your homework.
② will表“意志,决心”,用于各人称: I’ll go to Paris. 我打算尽早写信。
would是will的过去式, I would be glad to help you.
③ 表示说话人向对方提出请求或询问对方的意愿,would比will的语气更委婉
Will you please tell me the way to the shop
情态动词表推测
理论概述：英语中表示对某件事物的确定程度，即表示推测时, 通常用以下情态动词：
must, might, could, can’t, couldn’t, may
must 一定，肯定 推测可能性100%,肯定的语气最强
may, might, could 也许,可能,可能性20-80%,后接动词原形
can’t 不可能, 可能性0%, 后接动词原形.
【语法Exercise I】
1.When you cro ( http: / / www.21cnjy.com )ss the road, you be very careful. A. must B. should C. can D. may
2. That’s a p ( http: / / www.21cnjy.com )iece of good news. They ___ glad to hear that. A. can be B. might be C. must be
3. Mary ______ be in ( http: / / www.21cnjy.com )Paris.I saw her in town only a few minutes ago.
A. mustn’t B. shouldn’t C. can’t D. may not
4.I can’t find my back ( http: / / www.21cnjy.com )pack. It _________ still at school. A. can be B. might be C. must be
5．This hook ____ be Ca ( http: / / www.21cnjy.com )rla’s. Her name is on the book. A.might B.Could C.must D.can’t
6．Jack’s bike is blue, so this yellow one ________ be his.
A.mustn’t B.can’t C.couldn’t D.mightn’t
The guitar ________ belong to Alice. Only she plays the guitar here.
A．could B．must C．can’t D．Can
—What do you think “upset” mean —I’m not sure. It ______ mean sad,
A.must B.can C.might D.can’t
John___ come to see us tonight, but he isn't very sure yet.
A. may B. can C. has to D. must
This backpack must be ______. I saw her carry it yesterday.
A．Lucys B．Lucy C．Lucys’ D．Lucy’s
I didn’t hear the phone. I ___ asleep.
A. must b ( http: / / www.21cnjy.com )e B. must have been C. should be D. should have been
Mary ____ be in Paris. I saw her in town only a few minutes ago.
A. mustn’t B. shouldn’t C. can’t D. may not
--whose book is this ( http: / / www.21cnjy.com ) --It be Lucy’s. Look, Her name is on the cover.
A. can B. must C. may D. could
—It took me nearly ( http: / / www.21cnjy.com )forty minutes to walk here. --Have a drink, please. You be thirsty.
A. will B. must C. should D. can
14. 【2011湖北黄冈】41. ( http: / / www.21cnjy.com ) —Whose T - shirt is this —It ______ be John' s. It’s ______ small for him.
A. can't; mu ( http: / / www.21cnjy.com )ch too B. can't; too much C. mustn't; much too D. mustn't; too much
15.【浙江湖州】23. —Who’s ( http: / / www.21cnjy.com ) singing in the next room —It ____ be her. She has gone to New York.
A.can’t B. must C. shouldn’t D. Can
【Answers】1-5.ACCBC 6-10. BBCAD 11-15. CBBAA
【语法Exercise II】
--- Can you swim i ( http: / / www.21cnjy.com )n the river --- No, I __.A. mustn’t B. may not C. can’t D. needn’t
2. --- May I go swi ( http: / / www.21cnjy.com )mming now --- No, you ____. You must finish your homework first.
　　A. mustn’t B. may not C. couldn’t D. needn’t
-- Excuse me ( http: / / www.21cnjy.com ). Where’s the zoo -- Sorry,I don’t know.Ask the policeman.He __ ___know.
A. shall B. May C. need D. would
4. ____ I finish ( http: / / www.21cnjy.com )the work today 　 No, you needn’t. A. Must B. May C. Can D. Need
5. --- Must ( http: / / www.21cnjy.com )I finish my homework now --- No, you ______. You may have a rest first.
　　A. mustn’t B. can’t C. may not D. needn’t
--- Tom, where is ( http: / / www.21cnjy.com ) your father --- I’m not sure. He_____ in his office.
A. is B. may be C. maybe D. may
7. ---____I visit Lucy on Sunday, Mum ---Yes, you______.
A. Must；can B. May；can C. Need；need D. May；need
--- Where is Tom ( http: / / www.21cnjy.com ) --- He hasn't come to school today. I think he_____ be ill.
A. has to B. should C. may D. need
9. --- Can you fl ( http: / / www.21cnjy.com )y a kite --- No, I _____. A. mustn’t B. needn’t C. can’t D. couldn’t
10. This book _____ Lucy’s. Look! Her name is on the book cover.
A. must be B. may be C. can’t be D. mustn’t be
11 –May I go ( http: / / www.21cnjy.com )to the cinema, Mum --Certainly. But you ______ be back by 11 o’clock.
A. can B. may C. must D. need
12. They___do w ( http: / / www.21cnjy.com )ell in the exam. A.can be able to B.be able to C.can able to D. are able to
13---May I take this b ( http: / / www.21cnjy.com )ook out ---No, you___. A.can't B.may not C.needn't D. aren't
14 You___go and se ( http: / / www.21cnjy.com )e a doctor at once because you got a fever. A.can B.must C.would D should
15 -Can you ( http: / / www.21cnjy.com )speak Japanese -No, I___.A.mustn't B.can't C.needn't D.may not
16 -He___ be in the classroom, I think. -No, he ___ be in the classroom. I saw him go home a minute ago.
A. can; may not B. must; may not C. may; can't D. may; mustn't
17. Cars and buses ( http: / / www.21cnjy.com ) ______ stop when the traffic lights turn red. A. can B. need C. may D. must
18 -Shall I get one ( http: / / www.21cnjy.com ) more cake for you, Dad -Thanks, but you___, I've had enough.
A. may not B. must not C. can't D. needn't
19 Even the top stud ( http: / / www.21cnjy.com )ents in our class can't work out this problem, so it__be very difficult.
A. may B. must C. Can D. need
20 –Could I borrow ( http: / / www.21cnjy.com )your dictionary -- Yes, of course you ____. A. might B. will C. can D. should
21 The children__play ( http: / / www.21cnjy.com )football on the road. A. can't B. can C. mustn't D. must
22 You ___ be l ( http: / / www.21cnjy.com )ate for school again next time. A. mustn't B. needn't C. don't have to D. don't need to
23 -Must I do my ( http: / / www.21cnjy.com )homework at once -No, you__. A.needn't B.mustn't C.can't D.may not
24 His arm is all right. He___ go and see the doctor.
A. has not ( http: / / www.21cnjy.com )to B. don't have to C. haven't to D. doesn't have to
---___I take the newsp ( http: / / www.21cnjy.com )aper away ---No, you mustn't. You___read it only here.
A.Must; can B. May; can C. Need; must D.Must; must
【Answers】1-5.CABAD 6 ( http: / / www.21cnjy.com )-10. BBCCA 11-15. CDADB 16-20.CDDBC 21-25. CAADB
Unit 8 it must belong to Carla. (缩小版I，可以粘贴到课本或者笔记本上)
★Phrases(熟记版) Section A
1.belong to属于
2.at the picnic在野餐
3.go to the concert去听音乐会
attend a concert参加音乐会
4.in the music hall 在音乐大厅
5. anything valuable 值钱的东西
something unusual 不寻常的东西
something strange 奇怪的东西
6. the rest of….其余（剩余）的人或物
7. pick up 捡起
8.in the neighborhood在社区（邻近地区）
next-door neighbor 隔壁邻居
9.have fun doing sth. 做某事有乐趣
10. call the police\policeman 报警
11.at first 首先
12.run after 追逐、追赶
13. make noise(可数)吵闹
14. in the laboratory 在实验室
Section B
15.catch a bus赶公共汽车
16. express a different 表达一种不同
17. at the same time 同时
18. not only…but also…不但…而且…
municate with sb.和……交流
20. point out指出
21. in a certain way 以一种特定的方式
22.have a medical purpose 有医疗目的
23.keep healthy保持健康
24.a victory over an enemy 战神敌人
25. one of the greatest mysteries 最大的秘密之一
★★Sentences(熟记版)熟读并背诵以下句型，注意加粗及有下划线的字词。
1. Whose volleyball is ( http: / / www.21cnjy.com ) this It must be Carla’s.(=It must belong to Carla.) She loves volleyball.
这是谁的排球？它肯定是卡拉的。（它肯定属于卡拉。）她喜爱排球。
2. Whose hair b ( http: / / www.21cnjy.com )and is this It could be Mei’s hair band. Or it might belong to Linda. They both have long hair.这是谁的发带？可能是梅的发带，或者也可能属于卡拉。她们两个都有长头发。
3. I think somebody must have picked it up. 我认为一定有人捡到它了
4. At first, I thought ( http: / / www.21cnjy.com ) that it might be a dog, but I couldn’t see a dog, or anything else, either.
起初，我认为它可能是一只狗，但我没有看见狗，也没有看见其他任何东西。
5. ①One woman ( http: / / www.21cnjy.com ) saw something running away, but it was dark so she is not sure.
这个地方的一个女人看见有东西逃跑了，但是天黑了，所以她不确定。
②I hear water running in the bathroom 我听见浴室里的水在流。
③People like ( http: / / www.21cnjy.com )to go to this place especially in June as they want to see the sun rising on the longest day of the year. 人们喜欢去这个地方，尤其是在六月，因为他们想看到太阳在一年中最长的一天升起。
6. There must be s ( http: / / www.21cnjy.com )omething visiting the homes in our neighborhood. 一定有什么东西在拜访我们社区的人家.
7. The noise-maker i ( http: / / www.21cnjy.com )s having too much fun creating fear in the neighborhood.
噪音制造者正享受着在社区制造恐惧的极大乐趣。
8. He could be running for exercise. 他跑步可能是为了锻炼身体
He might be running to catch a bus to work. 他跑步可能是为了赶公共汽车上班。
9. Stonehenge, a ( http: / / www.21cnjy.com )rock circle, is not only one of Britain’s most famous historical places, but also one of its greatest
mysteries. 巨石阵,一个岩石圈,不仅是英国最著名的历史古迹之一,也是英国最大的谜团之一
10. For many year ( http: / / www.21cnjy.com )s, historians believed Stonehenge was a temple where ancient leaders tried to
　communicate with the gods. 多年来,历史学家们认为巨石阵是个寺庙,古代的领袖试图在这里和神交流
★★★Grammar 情态动词
情态动词的定义:表示说话人对所述动作或状态的态度或看法,表可能、需要、必须或应当之意
情态动词的特点: ① 情态动词没有人称和数的变化；
②本身有词义,不能独立作谓语, “情态动词+动词原形”做谓语
③直接参与句式的变化：提前构成疑问式；后加not构成否定式
情态动词的用法:
※1. can,could 的用法
can ① “能,会” 表示人或物本身所具有的能力: She can walk .
②表推测“可能”,常用于否定句或疑问句：That can’t be Tom;,he’s in England.
③表示“许可”时can可以和may换用，如： Can \May I go home now
Could ①could是can的过去式，She said she couldn’t swim .
②表委婉的语气 ( http: / / www.21cnjy.com ), 答语用can 或of course ：Could you help me Yes, you can./ No, you can’t.
be able to can和be able to都可表示能力;但can只有现在和过去式，be able to则有各种形式
He will be able to do the work better.
※ 2.may和might (may的过去式)的基本用法
①表示允许，用于肯定句。eg: You may come at 7:00.
②疑问句中表许可、征求意见m ( http: / / www.21cnjy.com )ight是may 的过去式比may语气委婉May I come in --Yes, please. \ Certainly.
注意：may 开头的一般疑问句，肯定回答用can 否定回答要用mustn’t
---May I watch TV, mum ---Yes,you can.\No, you mustn’t.
③表示推测,语气不太确定 He may be come, but I'm not sure.
④以could/can/may /might \will开头的一般疑问句,肯定回答用 can\may ,否定回答用can’t
Could \May\Might ( http: / / www.21cnjy.com ) I borrow your book 肯:Of course you can/ may. 否:No, I’m afraid you can't.
※ 3. must, have to
① must 必须, 应该,否定缩写mustn’t We must study hard at school.
②must be表“推测”, ( http: / / www.21cnjy.com )比较有把握 The book must be Carla's, it has her name on it.
③ must引导的一般疑问句,肯定回答用must,否定回答用needn’t
Must I finish the work today Yes, you must. \ No, you needn’t
④ must 表示“偏要”— ( http: / / www.21cnjy.com )How much money do you have —If you must know, I have two dollars.
have to 的基本用法：
must侧重说话人的主观看法,一般只用于现在时,have to 表客观需要且可用于多种时态
I must study hard. I had to stay at home because of the rain.
※4. need “需要、必须”
①need+ do ,作情态 ( http: / / www.21cnjy.com )动词时，主要用于否定句或疑问句中: You need do it now.
②need+to do, ( http: / / www.21cnjy.com )用作实义动词时，其否定和疑问形式应借助于do\does\did: He needs to wear the cool clothes.
③need开头的一般疑问句， 肯定回答用must，否定回答用needn’t。
Need ( http: / / www.21cnjy.com )we clean the classroom after school Yes, you must.\ No, you needn’t
※5. shall\should, will\would 的用法
①用于第一、三人称，表征求对方的意愿或请求指示，Shall I open the door Good idea.\OK.
should表“建议”或“劝告,意为“应该” You should finish your homework.
② will表“意志,决心”,用于各人称: I’ll go to Paris. 我打算尽早写信。
would是will的过去式, I would be glad to help you.
③ 表示说话人向对方提出请求或询问对方的意愿,would比will的语气更委婉
Will you please tell me the way to the shop
情态动词表推测
理论概述：英语中表示对某件事物的确定程度，即表示推测时, 通常用以下情态动词：
must, might, could, can’t, couldn’t, may
must 一定，肯定 推测可能性100%,肯定的语气最强
may, might, could 也许,可能,可能性20-80%,后接动词原形
can’t 不可能, 可能性0%, 后接动词原形.