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    Unit2 Using language (Grammar) 课件-2022-2023学年高一英语上学期外研版(2019)必修二
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    外研版 (2019)必修 第二册Unit 2 Let's celebrate!教案配套课件ppt

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    这是一份外研版 (2019)必修 第二册Unit 2 Let's celebrate!教案配套课件ppt,共22页。PPT课件主要包含了v 表明 显示,n 请求 要求,may,might,must ,could等内容,欢迎下载使用。

    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. It means the speaker is quite sure abut the statement. If we replace “culd” with “might”, the meaning f sentence (a) will remain mre r less the same. “Culd” and “might” in affirmative sentences have a similar meaning when indicating pssibility.
    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. If we change “might” in sentence (c) int “culd”, it means it’s impssible fr the children t receive presents.
    Lk fr mre sentences with mdals in the reading passage.
    1) Wh culd it be frm?2) The letters were als beautifully illustrated --- each must have taken its true authr, Tlkien, a lng time t cmplete.3) In anther letter, Father Christmas cmplained abut hw he culd nt stp his helpers playing games with the tys instead f wrapping them up.4) … we can all share the true spirit f giving at Christmas time.
    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”。
    2. 情态动词表示推测时, 在用法上有一些限制: ① must只用于肯定句中,意为“一定,准是”。如: This must be yur rm. ②culd多用于否定句和疑问句中。如: He lks yung. He culdn’t be ver 50. Culd it be true? ③may / might用于肯定句和否定句中。如: They may nt knw his address. She tld me that she might g t Hawaii this winter.
    确定被推测时间,正确判断动词时态。
    1. 对现在或将来的情况进行推测时,用“情态动词+ d”。
    eg Yu must be Mr. Smith. I was tld t expect yu. Our team might win the race.
    2. 对此时此刻正在进行的情况进行推测时,用“情态动词+ be +动词-ing形式”。
    eg She may be waiting fr yu in the entrance hall at the mment. The plice are stpping all cars. They must be lking fr the escaped prisner.
    3. 对过去的情况进行推测时,用“情态动词+ have dne”。
    “情态动词+ have dne”是高考的热点,在做此类题时,要仔细体会题干中所提供的信息,尤其注意题干中给出的时态。
    eg I didn’t see Alex. He might have gne hme. I culdn’t have left my bag n the bus. They must have gtten lst r they’d be here by nw.
    must have dne
    一定,想必。表示对已经发生的事情的肯定推测,语气较强。eg It must have rained last night. The grund is wet.
    may / might have dne
    可能已经,或许已经。表示对已经发生过的情况的肯定推测,语气稍弱。eg He may / might have given yu mre help, even thugh he was busy.
    culd have dne
    不可能。表示对过去发生的一不定推测。eg They can’t have gne ut, because the light is n.
    can’t / culdn’t have dne
    表示过去本来能够做某事而实际上没有做eg He culd have passed the exam, but he was t careless.
    (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. 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.
    Yu must be tired nw!
    It may/might/culd be him.
    That must be Lucy!
    that can’t be Lucy!
    They may/might/culd be frm ur schl.
    Rewrite the underlined sentences in the cnversatin using can/culd, may/might and must.
    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. Since they aren't answering their telephne, they ______________ (can have left, must have left).2. Mr. Reed lks pale. He _______ (can, may) be ill.
    must have left 
    I. 选用括号内合适的内容补全下面句子。
    3. They _______ (must, might) be hlding a meeting in the classrm. I’m nt sure.4. Yu _______ (must, may) be Mr. Smith. I was tld t pick yu up. 5.  They ________ live (culd, must) in New Yrk, but I’m nt sure. 6. She was ill. She ______________________ (culdn't have attended, mustn't attend) the meeting here.
    culdn't have attended
    Describe a festival celebratin using the wrds and expressins yu have learnt.
    T celebrate…, we ften drink/eat…, give… as gift, decrate with…
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