初中英语语法知识—情态动词的图文解析(1)
初中英语语法 情态动词 ppt

二、常见情态动词用法
原形 (过去式)
用法
表示能力(= be able to)
can (could)
(疑问句中) 表示请求
(否定句、疑 问句中)表示 可能性
含义
能;会
可以
can可能 can’t不 可能
例句
Tom can swim. =Tom is able to swim. 汤姆会游泳。
Could you give us a hand? 你可以帮我们一下吗?
情态动词
2020/7/8
九、情态动词
考点一 情态动词的基本用法
一、定义
情态动词表示说话者的情感、态度和语气。它们本身有一 定的意义,但没有人称和数的变化,不能单独作谓语,须和动 词一起构成句子的谓语。表示否定时在情态动词后加not (must, have to除外),表示疑问时将情态动词提至主语前即可。
shall (should)
Shall. . . ? 用 于 第 一 人 称 ,……好
表 示 建 议 或 吗? 请求
should用于各
种人称,强 调义务或责
应该
任
例句
Shall we ask the teacher for help? 我们向老师寻求帮助好 吗?
Students shouldn’t have long hair. 学生们不应该留长发。
原形 (过去式)
用法
含义
例句
will (would)
用于第二人 称疑问句中, 表示征求意 见或提建议
愿意
will用于各种 人称,表示 意愿
Will/Would you please take out the trash? 你可以把垃圾拿出去吗?
初中英语 外研社八年级上语法知识点-情态动词(PPT26张)

D. should
C 5. You ______ return the book now. You can keep it till next week if you like.
I need buy a big house. He need drive me home.
Need I buy a big house ?
-- Yes, you must. -- No, you needn’t / don’t have to. (不必要)
11
② 实意动词 (need to do sth)
A. must B. would C. may 15
3. — Dad, may I watch TV?
— No. You _A_ finish your homework first.
A. must
B. can
C. may
4. — Bob, shall we go and meet our new
13
have to 表示客观因素 We are very glad at the party, but mother is ill, so we have to leave now .
must 表示主观ຫໍສະໝຸດ 素 We must study hard to find a good job for ourselves .
--- Yes, you must. --- No, you don't have to/ needn't.
7
1.--Must I come before eight o'clock?
D --No, you _______.”
情态动词(15张PPT)初中英语专项复习课件

may
(2)“可能”,表示可能性( 猜测),常用于肯定句中
— May I go out and play basketball?我 可以出去打篮球吗?
(3)以may引导的一般疑问句 否定回答应为can't/mustn't (4)表示祝愿,常置于句首
— Yes, you may(can)./No, you can't.是 的,你可以。/不,你不可以。 May you succeed!祝你成功!
must
(3)must的否定式mustn't,表示“禁止; 不允许”,不能用于表推测
You mustn't play soccer in the street.你不
能在街上踢足球。
(4)must表示肯定的猜测,表示否定的猜 测用can't
— Must I get to the office at six? 我必须六 点到办公室吗?
某年重要的事情之前会在房间走来走去。
would
would 是 will 的 过 去式,但可 以用于现 在时间表 达委婉或 客气的语 气
Would you please bring your book here tomorrow?你可以明 天将书带到这里吗? He would share his progress with us when we were at high school. 当我们上高中时,他会和我们分 享他的进步。
你应该认真对待,不然你会失败的。
(1)表示说话人的主观意志,意为“必须 ”
You must finish your homework first.你必
须先完成你的家庭作业。
(2)表示猜测,意为“一定”,语气比
2021年初中英语语法之情态动词

初中英语语法之情态动词初中英语语法大全之情态动词①常见的情态动词有:can (could) , ___y (might),must ,shall (should), will (would), dare (dared) , need等,另外,have to、had better也当作情态动词使用。
情态动词后面必须加动词的原形。
②can表示体力、脑力方面的能力或客观的可能性。
口语中, 在询问或说明一件事可不可以做时,常用“can”代替“ ___y”。
情态动词“can”的过去式是“could”,否定式是“cannot”通常缩写成“can’t”,“could”的`否定式是“could not”,通常缩写成“couldn’t”。
如:Can I help you?(要帮忙吗?)/ He can swim.(他会游泳)/ That can’t be Mr Li.(那不可能是李先生)③ ___y表示允许、请求或可能性,用 ___y提问时,肯定回答一般用Certainly或Yes,you ___y.;否定回答一般用can’t或mustn’t. 如:May I ask you a question?—Certainly.(可以问你一个问题吗?当然可以)/ You ___y go now.(现在你可以走了)/ It ___y be in your pocket.(它可能在你的衣袋里)④ must表示“必须”、“一定”的意思。
表示“必须”时否定形式是mustn’t;表示“一定”时,否定形式是“can’t”如:We must be very careful when we cross the road.(我们过马路时一定要非常小心)/ It must be Jack.(那准是杰克)/ I haven’t seen Kate today. She can’t be here.(我今天没有看到过凯特,她不可能在这里)[注意]用must(必须)进行提问时,肯定回答用must,否定回答用needn’t;用must(一定)进行提问时,肯定回答仍用must,但是否定回答用can’t.如:Must we clean the room before we leave?–Yes,you must.或No,you needn’t.(我们走之前必须要打扫 ___吗?是的,必须打扫。
初中情态动词讲解ppt课件

• b.可能、或许 • (谈论可能性、表示推测,一般用于肯定句)
• Tomorrow I may go shopping. • 明天,我可能(或许)去商店买东西。 • He might be our new teacher. • 他或许是我们的新老师。 • 注意 • might在表示推测时,不表示时态,只是说明可能性比may还要小。
4
must
• a.必须、应该(表示有做某一动作的必要或义务)
• You must buy a ticket. • 你必须买一张票。 • b.一定、准是(表示有把握的判断或推测,一般只用于肯定句中)
• 在You must~.这一句型中,它的意思与祈使句相同。 • You must get up early. =Get up early. • 你必须早起。 • You must study hard. =Study hard. • 你必须用功读书。 • He must be our new teacher. • 他肯定是我们的新老师。 • (语气比may,might要肯定得多)
9
should
• should的用法 • You should read this book. • 你应该读这本书。
• 1.should(应当、应该)用于所有人称,与 ought to~同义。
• You should wait a little more. • =You ought to wait a little more. • 你应该再多等一会儿。
初中英语 中考语法-情态动词(共23张PPT)

8/1/2020
9
may & might
might 的用法 (may-might)
1. _表_示__过_去__的_可__能__和_允__许_,_“可能,也许” She said that he might take her bike.
也可以表示现在的可能性、许可,但是比may表示
2. _的_可__能_性__更_小__;_且might可以用于虚拟语气 Might I smoke here? You might get some help from her if she
must
1. _表__示__义___务__/_命__令__/_必_ 要,“必须”
You must be careful next time. You mustn't take photos here. mustn't “禁止”
2. _表__示__推___测__,__只__用___于__肯__定_ 句
—No, it ____ be her. She is picking up my sister at the
airport.
A8/1./20c20an't
B. mustn't C. can
8
may & might
may 的主要用法
A. _表__示__请__求__、__允__许__;比__c_a_n_正__式__,_ “可能,也许” —May I come in?
4
What can they do? What can I do? What can he do?
I can swim.
He can swim.
They can swim.
1. 情态动词+ V原 2. 无人称和数的变化 3. 独立进行句型转化
8初中英语语法讲解情态动词PPT课件

Might I give you a piece of advice? (Might 比 may更客气)
他说他可能来 He told me he might come. (Might与
told相呼应都是过去式)
情态动词的用法-may的用法
有时Might也可用来表示现在的事情,只 是语气较may更弱一些,可能性更小一些, 如:
o’clock.
情态动词的用法- must的用法
【注意】:A,在回答用must引的的疑问 句时,否定结构只能用needn’t
②表示惊异、怀疑 你怎么会这样粗心 How could you be so careless?(惊异、
怀疑的情绪) 我们当时以为那个故事不会是真的。 We thought the story could not be true.
(不可能)
情态动词的用法-could的用法
③可以代替can用于现在的动作,但语气 较为婉转
我们学到过的常见的情态动词
原形(过去式) can (could), may (might), must, have to(had to), need , ought to, dare (dared), shall (should), will (would)
情态动词的特征
(1)情态动词本身有词义,但词义不完 整,因此不能单独作谓语,只能和其他的 动词原形一起构成谓语。
(2)情态动词后接的动词不定式一律不 带to。
(3)情态动词不随人称变化而变(即不 管是何人称,后面接的情态动词都一样)
(4)含有情态动词的否定都是由“情态 动词+not”构成的,如:can-can not, may-may not,need-need not
初中英语-情态动词-课件(共31张PPT)

二、情态动词的用法 4.dare和need
need “需要” dare“敢” 可作情态动词也可作实义动词
• (2)当实义动词使用时,有人称和时态的变化 • e.g.You don't need to do it yourself. • He did not dare(to) look up.
• ——Can you drive a car at present? • ——I_____ do so in the busy street.
• A.may not C.daren't
B.don't dare D.needn't
二、情态动词的用法 ed to和had better
• (1)used to表示过去的习惯动作或状态,现 已不存在。
• e.g.There used to be our playground.
二、情态动词的用法 ed to和had better
time. • I'll not be able to come this afternoon.
二、情态动词的用法
• (2)表客观可能性,在疑问句中表示请求或许可 • e.g.Man can not live without air. • Can I use your pen?
• *could是can的过去时,主要用于疑问句,表示语气委婉。 • 肯定回答用 • 否定回答可用
C.should tell
D.should have told
二、情态动词的用法 7.will和would
(1)表意愿,用于各种人称的陈述句。
• e.g.I will do anything for you. • If you will read the book,I'll lend it to you.
- 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。
一、选择题 1.— I would like________ to see a movie. — It’s too late. You’d better ________alone. A.to go, go B.go, not go C.to go, not go D.going, go 2.You run with the train when it is coming. It’s dangerous. A.may not B.mustn’t C.needn’t 3.—Must I finish the work today, Mum? —No, you ________.You can finish it tomorrow. A.mustn't B.can't C.shouldn't D.needn't 4.You have finished most of the work, so you ____ start working so early tomorrow. You may come at 9 :00. A.can't B.mustn't C.needn't D.couldn't 5.—Can we walk across the road now? —No, we . We have to wait until the light turns green. A.couldn’t B.needn’t C.shouldn’t D.mustn’t 6.—Jenny, you _________ push your way onto the bus. —I’m really sorry about it. A.mustn’t B.needn’t C.may not 7.—Can I take some milk and biscuits to the reading room? —No, our school has a rule that students _______ eat or drink there. A.can’t B.mustn’t C.needn’t D.may not 8.—Tom, we’re going shopping at eight, right? —Yeah, but I ______ be a little late, so don’t wait for me. A.may B.should C.mustn’t 9.—How nice the building is! What is it for? —It ________ a hotel. But I’m not sure. A.must be B.have to be C.may be D.can be 10.—I’d like ________ Guo Jingming’s Tiny Times. —You had better________ his books. The stories he tells are far from real life. A.buying, don’t read B.to buy, not read C.buying, not read D.to buy, not to read 11.—Susan, someone is waiting for you on the phone. It_______ be your sister, but I’m not sure. — Oh, please tell her to call me_______ because I’m busy now. A.might; later B.must; later C.might; late D.must; late 12.—Could you help me download some Taylor Swift’s songs from Ku Gou? —Sorry, people download music from the Internet without paying, because it’s against the law. A.wouldn’t B.needn’t C.mustn’t D.couldn’t 13.—Can you come to my party on Saturday afternoon? —Sorry, I can’t. I ________ meet my friends. A.can’t B.might have to C.needn’t 14.-Could you help me with my English homework, Nancy? -Of course I____________. Glad to help. A.could B.can C.must D.do 15.It is 11:00 p.m now. Peter hasn't come back yet. His mother ______ be very mad at him. A.may B.can C.must D.need 16.— May I have some wine? — No, you . You have to drive home later. A.shouldn't B.needn't C.mustn't D.may not 17.—________ I borrow the books from the library, Miss Yang? —Sorry, you________. These books are only for members of the English Club. A.Can; couldn’t B.Could; can’t C.Could; couldn’t D.Can; needn’t 18.(2017·甘肃白银·10)—I wonder if these are Danny's glasses. —They________be Danny's. He doesn't wear glasses. A.can't B.must C.mustn't D.can 19.-_________ you help me with my homework? -Of course if I __________. A.Could; could B.Can't; can C.Could; can D.Can; could 20.When I write down what I am showing thanks to, it’s always for things that money ______buy. A.needn’t B.shouldn’t C.may not D.can’t 21.— Mum, I’ve signed for a big box by Future Express (快递). What’s in it? — I’m not sure. It ________be a present from your brother. A.need B.must C.may D.will 22.—Doesn’t Frank like staying at home and looking after his little sister? —_______, but he ________ because both of his parents work. A.Yes; has to B.No; has to C.Yes; doesn’t have to D.No; doesn’t have to
【参考答案】***试卷处理标记,请不要删除
一、选择题 1.C 解析:C 【解析】 【详解】 句意:——我想要去看电影。——太晚了。你最好不要独自一人去。 本题考查非谓语动词。to go是动词不定式,go是动词原形,going是现在分词或动名词,would like to do sth想要做某事,因此第一空用to go。had better (not) do sth最好(不)做
某事,根据It’s too late.可知,太晚了,因此不要独自一人去,用not go,故选C。 2.B 解析:B 【解析】 【详解】 句意:火车来的时候你不能跟它一起跑,这很危险。 考查情态动词。may not可能不;mustn’t不能,表禁止;needn’t不需要。根据“It’s dangerous”及语境可知,此处是表达“你不能跟着火车跑”,在这儿应是不允许,强烈的禁止
的意思,故用mustn’t。故选B。 3.D 解析:D 【解析】 【详解】 句意:-我必须今天做完这个工作吗,妈妈?-不,你不必。你可以明天完成。 mustn’t禁止,不要;can’t不能,不会;shouldn’t不应该;needn’t不必,没有必要。Must的一般疑问句,肯定回答用must,否定回答应用needn’t。故选D。 4.C 解析:C 【解析】 【详解】 句意:你已经完成了大部分工作,所以你明天不必这么早就开始工作。你可以9点来。 本题考查情态动词。can't不可能,mustn’t禁止,needn’t不必,couldn’t可能不。根据You have finished most of the work可知,你已经完成了大部分工作,因此明天不必这么早就开
始工作,因此用needn’t,故选C。 5.D 解析:D 【解析】 【分析】 【详解】 句意:-我们现在能过马路了吗?-不,我们不能,我们要等到交通灯变绿。couldn’t不能;needn’t不需要,不必;shouldn’t不应该;mustn’t禁止,不要。根据句意We have to wait until the light turns green可知,在红灯的时候是禁止过马路的,因此这里的语气比较强,
故应选D。 6.A 解析:A