外研版 (2019)必修 第二册Unit 2 Let's celebrate!教课ppt课件

这是一份外研版 (2019)必修 第二册Unit 2 Let's celebrate!教课ppt课件，共22页。PPT课件主要包含了◆情态动词，●慧眼识真伪，you must，●请您欣赏，● 大显身手，may，●真题再现， D ，●一起闯关吧，shall等内容，欢迎下载使用。
情态动词 精讲精练（一）
can culd 能，会may might 可能，可以shall shuld 将要，应该must (主观上)必须，一定will wuld 将要， 意愿ught t = shuld 应该
have t (客观上)不得不，必须dare (daren’t) 敢need (needn’t) 需要，必要used t 过去常常
◆ need 和 dare既作情态动词又作实意动词
⑴ 作情态动词 时后接动词原形，且无人称和数的变化;need没有过去时形式，dare 有过去时 dared, 两者的否定形式常为 ：needn’t 和 daren’t. 例如：a. I daren’t ask her fr a rise. b. I wnder whether he dare stand up in public.c. I wnder whether he need send it immediately.d. I need hardly tell yu that the wrk is dangerus.e. Yu needn’t finish that wrk tday.⑵ 行为动词:常构成以下形式
sb. need t d; dare t dsth. need t be dne / sth. need ding 表示某物（被）… 请看例句:a. Hw did yu dare t tell her that? b. I dn’t knw hw she dares t wear that dress. c. D yu need any help?d. The garden desn’t need watering at the mment.= The garden desn’t need t be watered at the mment.e. The bike needs repairing / t be repaired.
Hw dare yu say such a thing? （ ）Hw dare yu t say such a thing? （ ）
He daren’t t speak English befre such a crwd, did he? （ ）He daren’t speak English befre such a crwd, dare he? （ ）
Nbdy need t be afraid f catching the disease. （ ）Nbdy need be afraid f catching the disease. （ ）
These dishes need be cleaned carefully. （ ）These dishes need t be cleaned carefully. （ ）These dishes need cleaning carefully. （ ）
●轻轻告诉你： ⑴ need 疑问句的回答:-- Need I finish the wrk tday?--Yes, ________________.N, ________________.N, ________________.⑵ shall 和 must 疑问句的否定回答：-- Shall I tell Jhn abut it?-- N, yu ___________________.-- Must we d it nw? --N, yu _____________________.
yu dn’t have t
needn’t /dn’t have t
◆表示推测——情态动词的重要用法
1. Yu must be Mr. Smith--I was tld t expect yu here.2. He must have knwn what we wanted.3. We may have read the same reprt.4. He can’t have slept thrugh all that nise.5. There’s smene utside----wh can it be?6. What can they be ding?7. These pills might help t cure yur disease.8. Yu culd be right, I suppse.
1. I dn't knw where she is, she _______ be in Wuhan. 2. At this mment, ur teacher ________________ur exam papers. 3. The rad is wet. It ___________________ last night.4. Yur mther ________________________ fr yu.5. Philip __________________________ seriusly in the car accident. 6. -- Linda has gne t wrk, but her bicycle is still here.　-- She _______________________ (g) by bus.7. Mike ________________ his car, fr he came t wrk by bus this mrning.
must be marking
must have rained
must have been lking
may (might) have been hurt
may (might) have gne
can’t have fund
1. I thught yu _______ like smething t read, s I have brught yu sme bks. A. may B. might C. wuld D. must 2. Where is my pen? I ______it. A. might lse B. wuld have lst C. shuld have lst D. must have lst3. I didn’t hear the phne. I _________ asleep.A. must be B. must have been C. shuld be D. shuld have been4. It’s nearly seven ’clck . Jack _________ be here at any mment.A. must B. need C. shuld D. culd
5. -- There were already five peple in the car, but they managed t take me as well. -- It ______a cmfrtable jurneyA. can’t be B. shuldn’t be C. mustn’t have been D. culdn’t have been ● 轻轻告诉你：不同的“肯定”程度可按下列层次排列： He is at hme. (事实) He must be at hme.（非常肯定的推断） He culd be at hme.（很可能）
He ught t be at hme.（很可能） He may be at hme.（仅仅可能而已） He might be at hme.（或许, 非常不确定） He might nt be at hme.（也许不在家）He may nt be at hme. （比might可能性稍大） He culdn’t be at hme.（很可能不在家） He can’t be at hme.（一定不在家）He isn't at hme.（事实）
◆表示能力、许可的情态动词的用法
表示能力: can, culd, be able t*be able t 能用于多种时态。can / culd 只能表示现在或过去的能力。*was / were able t : “设法做成某事”,相当于 managed t d sth. / succeeded in sth./ding sth./be successful in sth./ding sth.
1. A cmputer _______ think fr itself; it must be tld what t d.A. can’t B. culdn’t C. may nt D. might nt
2. The fire spread thrugh the htel very quickly but they ______ get ut.had t B. wuld C. culd D. was able t
3. They will _______ run this machine n their wn in three mnths.A. can B. culd C. may D. be able t4. That big cinema ______ seat 2,000 peple.A. can B. shuld C. ught t D. is able t
悄悄告诉你：表示许可: may / might, can / culd might, culd 比较委婉, 一般多用于疑问句. can, may 表达的语言比较随便. 在以culd, might 表示征询对方意见或表示请求时，回答应相应使用can, may.
5. -- Culd I brrw yur dictinary? -- Yes, f curse yu ______.A. might B. will C. can D. shuld6. -- Might I watch TV after supper? -- Yes, yu _____.A. may B. must C. might D. can
◆表示否定的情态动词的用法:这是考察情态动词的热点之一。
mustn’t 不准, 禁止 ; needn’t 没必要 ( = dn’t have t );can’t 不能; 不可能; may nt 不可以; 可能不; shuldn’t 不应该 ( = ught nt t )
7. Yu ______ return the bk nw. Yu can keep it till next week if yu like.A. can’t B. mustn’t C. needn’t D. may nt8. Jhnny, yu ______ play with the knife, yu ______ hurt yurself.A. wn’t ; can’t B. mustn’t ; may C. shuldn’t ; must D. can’t ; shuldn’t
9. --Will yu stay fr lunch? --Srry, _____. My brther is cming t see me.A. I mustn’t B. I can’t C. I needn’t D. I wn’t10. --May I pick a flwer in the garden? -- ______.A. N, yu needn’t B. Nt, please.C. N, yu mustn’t D. N, yu wn’t
◆情态动词：shall, will 的多种意义
* 均可表示将来。 过去时为 shuld, wuld.
* shall 可表示必须、命令、 警告或征询意见.
* will 可表示意愿、常出现的动作、在疑问句 中表示请求和建议.
11. He ______ be punished if he disbeys.12. We are nt ging t quarrel at all if yu ____ nly let me speak.13. --Sir, ____ he g r stay? --Let him g.A. will B. shall C. might D. culd
14. The dr _______ pen.15. Rnald ______ stay in his small garden fr a lng time every day in the past.A. culd B. might C. shuld D. wuld16. Yu ______ have the bk after I read it.
1. Put n mre clthes. Yu _____ be feeling cld with nly a shirt n. A. can  B. culd  C. must  D. wuld2. -- Must I drive t his huse and pick up the children?   -- N, _______. A. yu shuldn't  B. yu might nt  C. yu needn't D. yu mustn't3. We didn't see Tm at the meeting yesterday. He         it. A. mustn't have attended  B. cannt have attended C. needn't have attended  D. wuld have nt attended
4. We         play chess than bridge. Sme f us dn't knw hw t play bridge. A. had better  B. wuld better C. wuld rather  D. had rather
5. There is smene kncking at the dr. _____ it be Tm? A. can  B. must  C. shuld D. ught t6. If yu live in twn, it is ften faster than a car and yu ___ wrry abut parking. A. must nt  B. may nt  C. shuld nt   D. dn't have t