高中英语外研版 (2019)必修 第二册Unit 2 Let's celebrate!评课课件ppt

这是一份高中英语外研版 (2019)必修 第二册Unit 2 Let's celebrate!评课课件ppt，共25页。PPT课件主要包含了课堂小练，maymight，must，could，情态动词表推测，certain，uncertain，真题链接等内容，欢迎下载使用。

回归第1单元学习的情态动词
Lk at the sentences frm the reading passage and answer the questins.
a That is why Letters frm Father Christmas culd be the perfect bk…b The children must have been very excited as they pened it.c … they might nt receive their presents if they were nt gd.
1) What d the wrds in red indicate: an rder, a request, ability r pssibility?
The wrds in red indicate pssibility.
2) Will the meaning f sentence (a) change if we replace “culd” with “must” r “might”?
If we replace “culd” with “must”, the meaning f sentence (a) will change.
3) What happens if we change “must” and “might” in sentences (b) and (c) int “culd”?
If we change “must” in sentence (b) int “culd”, it means the speaker is nt sure abut the statement, and it’s nly a pssibility.
情态动词must, can/culd, may/might均可表示推测, 它们可以对过去、现在或将来的情况作出语气强弱不同的推测。
1. 表示肯定的推测时： 各情态动词语气从弱到强依次为 might → may → culd → can → must；
把握推测语气的特点，选择恰当的情态动词。
表示否定的推测时：can’t / culdn’t语气较强，意为“不可能”；may nt / might nt语气较弱，意为“可能不”。
must的否定形式mustn’t不表示否定推测，而是表示“不许可”或“不应该”。
1. 用于肯定句,表示客观可能性,意为“可能”,即从理论上看是可能的,但不一定会发生 As a human being, anyne can make a mistake. 作为人类,任何人都有可能犯错。 2.用于否定句或疑问句,表示对现在的动作或状态进行主观的猜测,意为“可能”,或表示惊异、怀疑等态度。 a. He can't have a lt f mney. 他不可能有很多钱。 b. Can it be that it was l wh was mistaken? 难道是我弄错了?
Grammar 1 can+动词原形表推测
culd+动词原形,意为“可能”,可以指过去的情况,也可以指现在的情况,语气缓和。多用于否定句或疑问句。 a. He lks yung. He culdn't be ver 50. 他看起来很年轻,不可能超过50岁。 b. Culd it be true? 那可能是真的吗?
Grammar 2 culd+动词原形表推测
1. 表示主观的推测,意为“或许”,用于肯定句和否定句均可。 a. He may be very busy nw. 他现在可能很忙。 b. He may nt be at hme. 他可能不在家。注意:表示可能性时,can't语气较强,表示“不可能”; may nt语气较弱;表示“可能不,或许不”。
Grammar 3 may+动词原形表推测
might+动词原形,表示推测,意为“可能",可以指过去的情况,也可以指现在的情况,但语气比may更加不肯定。用于肯定句或否定句均可。 a. They might have a lt f wrk t d nw but I'm nt sure. 他们现在可能有很多活儿要干,不过我不确定。 b. She was afraid they might nt like the idea. 她担心他们可能不喜欢这个想法。
Grammar 4 might+动词原形表推测
must+动词原形,表示猜测,意为“准是,一定”,通常用于肯定句。 a. This must be yur rm. 这一定是你的房间。 b. Lk at his new car. He must have a lt f mney. 瞧他那辆新车。他肯定很有钱。
Grammar 5 must+动词原形表推测
选词填空(包含否定式)
can, culd, may, might, must (可重复选)
1.Helen 　　　　　 g n a trip with us, but she isn’t quite sure. 2.My sister met him at the theatre last night, s he 　　　　　　　　have atteneded yur am sure I saw Brian in the park this mrning.- Yu 　　　　　 be imagining things. He left fr America last night. 4. We 　　　　　 have face the diffculty tgether, but why didn’t yu tell me? 5.If yu _______ smke, please g utside.
can’t/ culdn’t
(At a fancy dress party)Chris: I spent ages putting up all the ballns and flwers last night.Jean: I expect yu are feeling tired nw!Chris: Yes, I am. Lk that guy is dressed as Batman. Is that Mike? Jean: It’s pssibly him. Check ut that girl ver there. I’m sure that’s Lucy.
Yu must be tired nw!
It may/might/culd be him.
That must be Lucy!
Rewrite the underlined sentences in the cnversatin using can/culd, may/might and must.
Chris: N, I dn’t think that’s Lucy. Lucy isn’t that tall.Jean: Lk at thse tw guys dressed as chickens! Oh, they’re waving at us! Maybe they’re frm ur schl.Chris: Let’s g and find ut.
that can’t be Lucy!
They may/might/culd be frm ur schl.
Lk at the picture and make as many sentences as pssible using can/culd, may/might and must.
The wman in red must be very excited t buy s many things.The man with a wallet in his hand might be a bit reluctant t pay.The wman in glasses may be very tired t get up s early and carry s many bags.The cashier might be feeling uncmfrtable as he is sweating a lt.…
1. can+完成式,表示对已发生情况的推测,主要用于否定句或疑问句。a. Yu can't have frgtten her. 你不可能已经忘记她了。 b. Where can she have put it? 她到底把它放在哪儿了呢? 2. culd+完成式,表示对过去情况的推测,多用于否定句或疑问句。a. He culd nt have been mre than 16 at that time. 他当时不可能超过16岁。 b Culd she have frgtten my address? 她会忘记我的地址吗?
Grammar 6 情态动词+完成式的用法
3. may/ might+完成式,表示对已发生事情的不肯定的推测,mght相比may语气更加不肯定。He may / might have cme by train. 他可能是坐火车来的。 4. must+完成式,表示对已发生情况的推测,通常用于肯定句。She must have gne hme. 她肯定已经回家了。
1. He is right.2. He must be right.3. He will be right.4. He wuld be right.5. He ught t be right.6. He shuld be right.7. He may be right.8. He culd be right.9. He might be right.
almst certain
1. (2021•天津6月卷) -I hnestly dn’t think I'm ging t be admitted.-Well, yu never knw! Yu__________ a better impressin than yu think.A. may have madeB. shuld have madeC. culdn't have madeD. needn't have made2. (江苏巻) -I left my handbag n the train, but luckily smene gave it t a railway fficial.-Hw unbelievable t get it back! I mean, smene__________it.A. will have stlenB. might have stlenC. shuld have stlenD. must have stlen
3. (江苏巻改编) It was sad t me that they, s pr themselves, ______bring me fd.A. canB. shuldC. mustD. need
1. —I dn’t really like James. Why did yu invite him? — Dn’t wrry. He ______ cme. He said he wasn’t certain what his plans were. A. must ntB. need ntC. wuld ntD. might nt 2. The traffic is heavy these days. I _____arrive a bit late, s culd yu save me a place?A. can B. must C. need D. might3. One f the few things yu _____say abut English peple with certainty is that they talk a lt abut the weather.A. need B. must C. shuld D. can