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1、单元语法小专题(Grammar Focus ) 情态动词表示推测的用法情态动词可以表示说话的语气,本单元我们主要学 must,might,could,can 等情态动词表示推测的用法。表示推测时,要根据肯定名.疑问名或和否定句的不同句式选用不同的情态动词。 情态、 解说 例句动词Alan has been in China for用于肯定句 ,意为“一 | several years. He must be amust | 定,末定” ,表示有招 | Dig boy now区和伦在中国好几握的肯定推测 年了。现在他一定是个大男孩了。 多用于否定名或疑问句 中, 意为“可能，会,表示可能性较大
2、can的推测。cant 可用于对 must 表示的肯定推测进行否定_， 用于肯定句,意为“有Imighty/|可能,也许”表示把握could不大的推测 That cant be Mary一shes inNew York.那不可能是玛丽一一她在纽约呢。全HH一人全是This volleyball might/couldbe Toms. He is looking for hisvolleyball. 这个排球可能是汤姆的。他正在找他的排球。 【拓展了表示对现在情况的推测用情态动词十do”;表示对正在发生的事情的推测用情态动词十bedoing”;表示对过去或已完成事件的推测用情态动词十have d
3、one”。She might be in the classroom now.她现在可能在教室里。Its ten oclock. He must be having class.十点钟了。他一定在上课。She is crying. She must have known the bad news.她在器。她一定已经知道了这个坏消息。 号 LEEZAS玫工.用 must,may,might,could,cant 填空。1. 一Whose earrings are these?一They ma might could be Marys. She wearsearrings Sometimes.bu
4、t Im not sure-。3. The telephone is ringing,but nobody answers it.He cant be at home.4.一Is this Lan Qiangs boxing glove?一Yes,it must be his. Theres his name on theback.四 汕5 YouwduiEtGEUGIUUICGGieav cuarain this afternoon.。 开. 单项选择。(CC )1. 一You be happy with the strong public Support we ve received.一Y
5、es,you are right. Tm really excited.A. may 也. can C.must D. need(B )2. 一Ohihe pe Ji Ming.工know him well.一No:it be him. He s gone to Neijiang for a meeting.A. can;doesnt have to B. musti; cantC. need;mustnt D. may; may not (B ) 3.(CC )4.(CC )5.My mother be at home, and you can goto see her.A.cant B.
6、mightC. may not D. needntIt must be your brother a Song.A.to sing -B.sing CC, sinsing D, sangNowadays,all passengers go through security check before they take a train.A. can B. may C.must _D. will焉. 根据汉语意思完成句子。1. 这本书肯定是汤姆的。The book _mnust be Toms.2. 天不可能下两,因为阳光灿烂。It _canlt rain ， ,because the sun is shining. 3. 现在他或许已经离开了。刚才他说要离开的。He may might have left now. He said he wouldleave just now。
