人教版 (2019)必修 第三册Unit 5 The Value of Money优质课件ppt

这是一份人教版 (2019)必修 第三册Unit 5 The Value of Money优质课件ppt，共24页。PPT课件主要包含了Leading-in，情态动词的分类，情态动词的用法，must，have to，Must，needn’t，had to，cancould，maymight等内容，欢迎下载使用。

May we ask what yu're ding in this cuntry and what yur plans are?
I can't say that I have any plans.
Yu mustn't wrry abut that.
Culd yu ffer me wrk here?
What are the functins and meanings f these mdal verbs?
一、情态动词的语法特征
可以表示可能、建议、愿望、必要、允许、能力等。 2.没有人称和数的变化。3.不能单独作谓语，必须和实义动词一起构成谓语。4.除ught和have外，后只接不带t的不定式,(即动词原形)。
1.只作情态动词的：2. 可情态可实义的： 3. 可情态可助动词的: 4. 相当于情态动词的:
can/culd, may/might, ught t, must
need, dare/dared
shall/shuld, will/wuld
have t, used t
2. must 表示必须、必要。回答must引出的问句时, 如果是否定的回答, 不能用mustn’t，而要用needn’t 或 dn’t have t。
must, have t
— Must we hand in ur exercise bks tday? — Yes, yu must. (N, yu dn’t have t.)
1. must 表示推测时， 只能用于肯定句。
3.have t和must均表示“______”，但______是指说话人的主观看法，而________则强调客观需要。。
① I have t wait here because I have n umbrella with me.② I must recite the text this mrning.
选词填空：must，needn’t，have t，mustn’t①—Can’t yu stay a little lnger?—It’s getting late.I really ____________ g nw.My daughter is hme alne.②Yu ____________ be careful with the camera.It csts!③—____________ I turn dwn the radi nw?—N，yu ____________.④My brther was ill，s I ____________ call a dctr in.
1. can /culd 表推测, 只能用在否定句或疑问句中。
It’s s late. Can Tm be reading?She culdn’t be telling lies.
*对过去发生的行为进行推测时，常用can/culd have dne的否定或疑问形式。
The dr was lcked. She culdn’t have been at hme.
2. can /culd 表能力，can表示现在的能力，culd表示过去的能力。
I can read this Chinese article.She culd play the pian at the age f five.
*can表示能力时，还可以用be able t代替。 be able t后接动词原形，可用于大多数时态。
I will be able t speak French in anther few mnths. They were able t escape frm the building.
3. can /culd 表许可，culd语气更委婉。
Can I cme in?Culd I brrw yur pen?
1. 表示推测时, 只能用于陈述句, 可指现在，也可指过去，且可能性不大。
They may cme here tmrrw.He might be ding his hmewrk nw.
2. 表示请求或允许, might可以指过去的时间，也可指现在的时间。
对may的一般疑问句的肯定回答可用may或can, 但作否定回答时要用mustn't或can't。
—May (Might) I have a little brandy?—N, yu mustn't. Yu'd better nt.
3. May可以表示祝愿或希望，而might不行。
May they be very happy in the future.May yu succeed in the cming year.
shall/shuld
1. 在一、三人称的疑问句中, shall用来询问对方的意愿。
Shall we begin ur lessn?
2. 用于二、三人称的陈述句中, 表说话人命令、警告、允诺等口吻。
He shall have the bk when I finish reading.
Yu shuld be plite t yur teachers.
3. shuld表示劝告、建议、命令，用于各种人称。
4. shuld表示说话人的惊讶、愤怒、失望等特殊情感，意为“居然，竟然”。
Amazing! Yu shuld wear slippers at wrk.
1. 表示请求、建议等, wuld比will委婉客气。
Wuld yu pass me the bk?
2. 表示意志、愿望和决心。
I will never d that again. They asked if we wuld d that again.
1. 表示职责和义务，意为“应该”(因责任、义务等该做)，口气比shuld稍重。
Yu ughtn't t smke s much.
2. 表示推测，暗含很大的可能性，近似于shuld。
Han Mei ught t knw his telephne number.
1. 作情态动词时，主要用于否定句、疑问句和条件从句中，一般不用在肯定句中。
He desn't dare (t) answer.Yu didn't need t d it yurself.
Hw dare yu say I’m unfair?Yu needn’t cme s early.
2. dare和need作实义动词时，其否定和疑问的构成需借助d/did/des，need后面接带t的不定式，而在疑问句和否定句中，dare后可省去t。有时态、人称和数的变化。
过去将来时，表示从过去某一时间来看，将要发生的动作或存在的状态。
1. wuld+动词原形
He asked me hw sn I wuld get ready.I asked him if Peter wuld arrive the next day.She tld me she wuld make d with it later.
2. was/were ging t+动词原形
She tld me she was ging t pst the parcel. He was ging t start ff at nce.
*与wuld+动词原形相比，was/were ging t+动词原 形有打算、计划的含义。
3. was/were abut t d
表示说话的瞬间将要发生的动作。此结构一般不与时间状语连用，但后面可以接when引导的分句。
I felt that smething terrible was abut t happen.We were abut t g there when it begin t rain.
4. g, cme, leave, start, meet等动词的过去进行时，表示就 过去的某一时刻而言即将发生的动作。
She didn't say when she was cming again next time.Jim decided they were flying t England next mnth.
5. was/were t d
表示曾经计划做某事，并且从现在看已经实现。当表示“原计划做某事但是最终未发生”，用was/were t have dne.
I felt nervus because I was sn t leave hme fr the first time.We were t have been married last year.
Cmplete the fllwing sentences using mdal verbs.
Yu’ve been wrking all day. Yu ______ be very tired.2. I wnder wh that is. It _____ be Lisa. She’s in the library at this time.3. It is a lng time since we met last time. Yu _______ cme and see us mre ften.4. I haven’t decided where I’m ging fr my hlidays. I _____ g t Australia.5. My father’s birthday is cming. What _____ I get him?6. Why dn’t yu try n this dress? It _______ lk nice n yu.7. — Wh was the man talking with yur teacher? — I’m nt sure. It ______ be her brther.8. I dn’t knw when the guests be here. They _________ arrive at any time.
will / culd
1. Philip bught tw tickets fr The Phantm f the Opera. He_________________ (watch) with his girlfriend n the weekend.2. I was s surprised at the news that David __________(play) the rle f the dinsaur in the play that I gave him a hug ut f jy.3. Lily decided that she ___________________________ (settle) in New Yrk and pursue her dream f becming an actress.
was ging t watch
wuld play
wuld settle / was ging t settle
Cmplete the fllwing sentences that describe the future using either frm f the given verbs.
4. Hey, Timmy. I ________________ (call) yu. But nw that yu are here, I dn't have t.5. The cmpetitin was s clse that n ne was sure wh __________ (win)the Best Actr award6. Jim is nt here right nw. He said he______________ (be) n duty at the library this afternn.
was ging t call
was ging t be
Read the passage and fill in the blanks with suitable mdal verbs in the bx.
may must can ught t might had better wuld shuld
In the film The Millin Pund Bank Nte, Henry Adams is stuck in a freign cuntry withut mney and friends, and with nwhere t stay. While this situatin _____ seem unusual, it can smetimes happen t travellers. In case it happens t yu n a trip abrad, what ________ yu d? First, and mst imprtantly, yu ________stay calm. Fear _____ cause yu t becme cnfused. Yu need t think
clearly. Secnd, yu shuld g t yur nearest cnsulate. They ________ be able t help t sme extent. Third, yu ______ d well t check with sme lcal charities. They ______ffer help t travellers in need. Furth, yu _________avid getting int truble. Yu ______ think that stealing sme mney r fd wuld help yu, but yu shuld nt d s. Getting caught ______ ruin yur life.