(完整版)人教版高中英语必修三情态动词基本用法
(完整版)情态动词的基本用法归纳

情态动词的基本用法归纳情态动词有can (could), may (might), must, have to, shall (should, will (would), dare (dared), need (needed), ought to 等。
情态动词无人称和数的变化;不能单独使用,必须与其后的动词原形构成谓语。
一、can, could1)表示能力(体力、知识、技能) 。
Can you lift this heavy box? (体力)Mary can speak three languages. (知识)Can you skate?(技能)此时可用be able to代替。
Can只有一般现在时和一般过去式;而be able to则有更多的时态。
I 'll not be able to come this afternoon.当表示经过努力才得以做成功某事”时应用be able to,不能用Can。
如:He was able to go to the party yesterday evening in spite of the heavy rain.2)表示请求和允许。
- Can I go now?- Yes, you can. / No, you can 't.此时可与may 互换。
在疑问句中还可用could,might 代替,不是过去式,只是语气更委婉,不能用于肯定句和答语中。
- Could I come to see you tomorrow?- Yes, you can. ( No, I 'm afraid not. )3)表示客观可能性(客观原因形成的能力) 。
They've changed the timetable, so we can go by bus instead.This hall can hold 500 people at least.4)表示推测(惊讶、怀疑、不相信的态度) ,用于疑问句、否定句和感叹句中。
新人教版必修三Unit5重点语法复习:情态动词

语法:情态动词基础知识讲解1. 情态动词的定义情态动词是一种本身有一定的词义,表示说话人的情绪、态度或语气的动词,但不能单独作谓语,只能和其他动词原形构成谓语,没有人称和数的变化。
常用的情态动词主要有:can, could; may, might; shall, should; will, would; must; need; dare等例句:The police still haven't found the lost child, but they're doing all they can.Could you please speak a little louder?2. 情态动词的用法(1) 表示能力The little boy can read and write.I could feel the ground shaking.(2) 表示可能和推测They made a bet which would settle their argument.Those of you who are familiar with game will know this.There ought to be enough space for all of us.(3) 表示许可或禁止You can’t open it until two o’clock.You shouldn’t take her help for granted.You mustn’t do that.(4) 表示发出指示或提出请求Will you please take her to the library?Could you offer me work here?(5) 表示提出建议You could ask the teacher for help.The cookies Susan made are delicious. You ought to try some.(6) 表示愿望Would you recommend the play to other people?I would like to know the date.(7) 表示义务和需要You must come at once.We have to wear uniforms at school.【过关检测】单项选择1.【★★★】—Mary knows the city quite well.—She______ well have been there before.A.need B.could C.should D.may【答案】D【解析】考查情态动词辨析。
语法 Modal Verbs情态动词 课件 2021-2022学年高中英语人教新课标必修三

I commanded that you (should) go to the front immediately.
重点语 法规则!
宾语从句
从句的谓语:should+动词 原形,其中should可以省略
虚拟语气
常见的,后接宾从要用虚拟语气的动词还有:
四个“要求”:request, require, demand, desire
Your parents will try their best to help you. 你的父母会尽最大努力帮助你。
用法:
① 表示义务、必要或命令 : You must come early tomorrow.
② 表示推测“肯定,一定”: They must be at home. The light is on.
Tom can swim. =Tom is able to swim.
汤姆会游泳。
can
(could)
(疑问句中)表示 请求
可以 Could you give us a hand?
你可以帮我们一下吗?
(否定句、疑问 句中)表示可能 性
The boy can’t be Jim. He’s can可能 much taller.
2. 实义V.
肯:dare to do 否:don't dare to do
e.g.: I dare to swim . He doesn’t dare to swim.
1. You ____to the meeting this afternoon .
A needn’t to come
B don’t need come
need 需要,有必要
1. 情态V, 肯:need do 否:needn't do
新人教必修3_Unit1_Grammar情态动词]
![新人教必修3_Unit1_Grammar情态动词]](https://img.taocdn.com/s3/m/35b7c822453610661ed9f4a7.png)
3. may 与might
1). 表示“许可”或“请求”,在这样的句中,might比m 语气更委婉,客气。 肯定回答用may或can,否定 回答时用mustn't或can't,表示“不可以”或“禁止”。 Eg: --- May I come in ? 我可以进来吗? --- Yes, you may/can. 可以,请进来。 --- No, you mustn’t/can't. 不,你不能。
4. 用于祈使句表祝愿。
Eg: May you succeed! May God bless you!
5. may have done 和might have done 表示 对过去的推测。
1. Sorry I'm late. I _____ A have turned off the alarm clock and gone back to sleep again. A. might C. can B. should D. will
二、表示对过去所发生事情的遗憾或责备
1. should/ought to have done “过去本该做而没做” eg: I really regretted wasting the hours when I should have studied hard, but it was too late. 2. shouldn’t/oughtn’t to have done “过去不该做的事却做了” eg: I’m very sorry for the words I shouldn’t have said to you at that moment. 3. could/might have done “本来能够做的事却没做” eg: He could have worked out the problem.
人教版高中英语必修3 五个单元语法知识点汇总

高中英语必修三考点一情态动词( unit 1 ,unit 2)一.情态动词的分类1.只做情态动词:must、can(could)、may(might)、ought to2.可做情态动词又可做实义动词:need、dare3.可做情态动词又可做助动词:shall(should)will(would)4.具有情态动词特征:have(had) to、used to情态动词是表示说话人的情绪、态度、语气的动词,(如要求、请求、命令、应该、必要等),本身有一定的词义。
但情态动词不能单独作谓语,只能和其他动词原形构成谓语,给谓语动词增添情态色彩。
例句:I can read this sentence in English. 我能用英语读这句话。
We can be there on time tomorrow.我们明天能按时去那儿。
May I have your name? 我能知道你的名字吗?Shall we begin now?我们现在就开始吗?You must obey the school rules.你必须遵守校规。
can (could), may (might), must, need,shall (should), will (would),have to ,had better,ought to, dare (dared),.二.位置情态动词有一定的词义,但并不完整,必须与动词原形一起构成谓语。
I can see you. Come here. 我能看见你,过来吧。
He must have been away. 他一定走了。
What can I do for you? 我能帮你吗?How dare you treat us like that!你怎能那样对待我们!三.特点情态动词无人称和数的变化, 情态动词后面跟的动词需用原形,否定式构成是在情态动词后面加 "not"。
个别情态动词有现在式和过去式两种形式, 过去式用来表达更加客气, 委婉的语气, 时态性不强, 可用于过去,现在或将来。
人教版高中英语必修三语法总结

人教版高中英语必修三语法总结高中英语必修三语法主要考点有情态动词、名词性从句、同位语从句等,下面是具体的高中英语必修三语法,仅供参考。
1英语必修三有哪些语法要学考点一情态动词(unit1,unit2)一、情态动词的特点:1.没有人称和数的变化。
2.有些情态动词有过去式的变化:e.g.will→would,can→could,may→might,dare→dared二、情态动词的否定式:情态动词+not+动词原形cannot:can’t,mustnot:mustn’t,neednot:needn’t三、情态动词的用法及相互区别,是考试的内容之一1.can,beabletobeableto表示经过努力后,能够做到;beableto有多种形式的变化。
can1).表示体力或脑力方面的能力;2).表示允许、可能性。
could是can的过去式,表示过去有能力及过去存在的可能性;用于疑问句表示委婉地提出问题。
1)Thefirespreadthroughthehotelveryquicklybuteveryone____getout.(NMET97)A.hadtoB.wouldC.couldD.wasableto2)-Willyoustayforlunch?-Sorry,__.Mybrotheriscomingtoseeme.(NMET99)A.Imustn’tB.Ican’tC.Ineedn’tD.Iwon’t2.may表示询问或说明一件事可不可做;表示某事有可能发生。
might是may的过去式;用在疑问中比may委婉、客气。
1)-MayItakethisbookoutofthereading-room?-No,youmustn’t.(Yes,youmay.)2)-MightImakeasuggestion?-Yes,youmay.3.must1).表示必须要做的事:必须2)表示很有把握的推断:一定,准是。
have(has)to:have(has)gotto必须,不得不。
情态动词的用法完整详细

情态动词的用法完整详细情态动词定义:情态动词是一种本身有一定的词义,但要与动词原形一起使用,给谓语动词增添情态颜色,表示说话人对有关行为或事物的态度和看法,认为其可能、应当或须要等。
情态动词后面加动词原形。
分类:情态动词有四类:①只做情态动词:must,can(could),may(might),ought to①可做情态动词又可做实义动词:need,dare①可做情态动词又可做助动词:shall(should),will(would)①具有情态动词特征:have(had) to,used to位置:情态动词在句中放在谓语动词之前, 谓语动词前若有助动词,则在助动词之前,疑问句中, 情态动词则在主语之前。
I can see you. Come here.我能看见你,过来吧。
He must have been away.他一定走了。
What can I do for you?我能帮你吗?How dare you treat us like that!你怎能那样对待我们!特点:情态动词无人称和数的变化, 情态动词后面跟的动词需用原形,否定式构成是在情态动词后面加"not"。
个别情态动词有现在式和过去式两种形式, 过去式用来表达越发客气, 委婉的语气, 时态性不强, 可用于过去,现在或未来。
情态动词属非及物动词,故没有被动语态。
情态动词没有非谓语形式,即没有不定式,分词,等形式。
He could be here soon.他很快就来。
We can't carry the heavy box.我们搬不动那箱子。
I'm sorry I can't help you.对不起,我帮不上你。
基本助动词与情态助动词最主要的区分之一是,基本助动词本身没有词义,而情态助动词则有自己的词义,能表示说话人对有关动作或状态的看法,或表示主观设想:What have you been doing since? (构成完成举行体,本身无词义)I am afraid I must be going. (一定要)You may have read some account of the matter. (或许已经)除此之外,情态助动词还有如下词法和句法特征:1)除ought和used以外,其他情态动词后面只能接不带to的不定式。
人教版高中英语必修3 Unit1 情态动词第四讲:need、dare 基本用法

(天津高考)
It’s quite warm here; we ________ turn the heldn’t
B. mustn’t
走进dare
你敢吗?-dare 基本用法特点
1. dare用作情态动词时,意思是“敢”,其后接动词原形,通常只
1. I wonder how he A. dare to say C. not dare say
实战演练
that to the teacher. B. dare saying D. dared say
课程小结
need dare
用法小结
情态动词 (+动词原形)
实意动词
多用于肯定句; (sb.) need to do
你需要特别记need
need作为实意动词 有人称、数和时态的变化(在变为否定句和疑问句时 需借助于助动词)
(1)当主语是人时,后可接名词和动词不定式, 即: need sth./ need to do sth. 如: He needs some help. 他需要一些帮助。
特殊用法
need作名词用,当“需要,必需”解,不可数。可构成下列短语和 句型:
实战演练
1._T_h_e_r_e_i_s_n_o__n_e_e_d_t_o_ worry at all. 根本没有必要担忧。 2.I’ll come when you __a_r_e_i_n_n_e_e_d__o_f__ help.
典型应用
通过前面的学习,相信大家对这堂课的知识 点有了初步的了解。下面我们通过几个例题 加深对知识的理解及运用:
2. dare用作实意动词时意为“敢于”,可以有各种词形变化,可用于 各类句型(肯定句、否定句、疑问句及各类从句等),其后多接带to的不定 式,有时to也可省去(尤其是在否定句或疑问句),可用于非谓语形式,完 成时态等:
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How many modal verbs can you remember?
will/would
can/could
have/had to
may/might
used to modal verbs
shall/should
ought to
dare
must need
1. can/could
• 1)表示能力 • He can play table tennis quite well. • 2) 表示事物一时的特征, 理论上的可能性 • It’s always warm here, but sometimes it can
What are 情态动词(modal verbs)?
情态动词的特点 • 情态动词有一定的意义 • 无人称和数的变化 • 通常不带to ,后接动词原形 • 表示说话人的语气或情绪
情态动词备考方向:
• 1. 各情态动词的基本用法; • 2. 易混淆情态动词的辨析; • 3.情态动词在特定语境中的用法 • 4.虚拟语气中情态动词的用法.
wet. • 3. “偏要,硬要” • If you must smoke, please go out. • 4. 否定,表示 “禁止” • You mustn’t play with fire. You may hurt yourself.
must对比have to
• 1) 两词都是‘必须’的意思,have to 表示客观的需 要, must 表示说话人主观上的看法,既主观上的必 要。
种形式。
• He had to look after his sister yesterday. • 3) 在否定结构中: don‘t have to 表示“不必”
mustn’t 表示“禁止”
• You don‘t have to tell him about it.
4.Shall的用法
(1). Shall 常用于第一人称表示简单的将来 When shall well meet again? I shall have finished my homework by Friday. (2) shall用于第二,三人称表示: a. 允诺或强烈的意志 It shall be done as you wish. You shall get a bike as your birthday present. B. 肯定会发生的事情 That day shall come. C.命令或必须执行之事. This law shall have effect in Scotland.
be very cold. • He’s good-tempered. However, he can be
hard to deal with when offended. • Even an experienced teacher can make
mistakes.
• 3)表示许可/允诺 • ---Can/Could Tom use the car? • ---Yes , he can. • You can have my seat. I am going now.
2. may/might
• 1)表示请求\许可 • ---May/Might I come in? • ---Yes, you may. • 2)表示可能性的推测 • Her appearance has changed so much that you
may well not recognize her. • It’s so late. I thing he may/might have gone to bed. • You might have given him more help, but why
didn’t you? • 3) may用于祈使句表示祝愿 • May you succeed! • May you return in safe!
3. must
• 1. 必须 • Must I say “sorry”? • Yes, you must. / No, you needn’t. • You must see a doctor. • 2. 猜测 “肯定,准是” • She must be watching TV now. • There must be some mistake. • It must have rained last night. The ground is so
• My brother was very ill, so I had to call the doctor in the middle of the night.
• He said that they must work hard. • 2) have to有人称、数、时态的变化,而must只有一
• 4) 表示推测 • 1) ---Someone is knocking at the door. Who
can it be? Can it be Scarlet? • ---No, it can’t be her. She called from
Tokyo just now. • 2) He can not have forgotten it. • 3) The accident couБайду номын сангаасd have been avoided.
5.Should 的用法
• (1) 用于表示义务或责任 You shouldn’t drink and drive. Visitors should inform the receptionist of their
(3)用于疑问句或表示提议的句子,请 求听者决定之.
1)---Shall we go together? ---Yes, let’s. 2)---Shall I get you a chair? ---Yes, please. 3)---Shall the visitor come in now? ---I’d rather he came in later.