Unit+2+Let’s+celebrate+Using+language+学案 高中英语外研版（2019）必修第二册.docx

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1、B2U2 Using languageModals(2)语法感知：1The children must have been very excited as they opened it.2The letters were also beautifully illustratedeach must have taken its true author.3In another letter，Father Christmas complained about how he could not stop his helpers.4Interestingly，the letters did not co

2、ntain the usual warnings to children that they might not receive their presents if they were not good.5.we can all share the true spirit of giving at Christmas time.Summary:1以上句子中，句3和句5中的情态动词表_。2句4中的情态动词表 。3句1和句2中的must have done表 ，意思是“ ”。1can与could的用法1)表_(could是过去式): She can do shopping on the Inter

3、net，but she couldnt last year.2)表_，“可能，有时候会”(can一般用于疑问句和否定句，could常用于肯定句)Can this news be true? It could be true.3)表_(could表更委婉的语气，回答时只能用can):Can/Could I go now? Yes，you can.4)用于肯定的陈述句中，表_: As we all know，anyone can make mistakes.5)习惯用法: “cannot/ can never.too.”表“_”You cannot be too careful.We cannot

4、/can never thank you too much for what youve done for us.选出下列句中can/could的含义A.表示能力B.表示推测C.表示请求和许可D.表示理论或习惯上的可能性I believe that he cant be so rude.I can speak English fluently while he cant.Scotland can be very warm in September.Could you please clean this room? Yes，I can.2may与might的用法1)表_(might在语气上比ma

5、y更委婉)以may/might开头的问句在否定回答中要用mustnt/cant：May/Might I play computer games after supper? Yes，you may./No，you mustnt/cant.2)表把握不大的_，意为“可能”，用于肯定句(might语气更加不确定):The medicine may/might work，but Im not sure. He told me he might be late.3)may用于祈使句中表_: May you succeed.4)固定短语：“_”，“_”:Now that you have the oppo

6、rtunity，you might as well make full use of it.写出下列句中may的用法May you be happy！表 I think he may come today.表 There is a set of rules to show what members may and may not do.表 3must的用法1)表“_”(语气比should，ought to强烈), 其否定式为_(不准；禁止)You mustnt do that，because you must keep your word.注以must开头的一般疑问句的肯定回答要用must，否

7、定回答要用neednt/dont have to。Must I finish the paper today? Yes，you must./No，you neednt/dont have to.2)表_，只能用在肯定句中，“_”；在否定句、疑问句中要用cant代替。You have worked hard all day.You must be tired.辛苦工作了一整天，你一定累了。(对现在情况的推测判断)They must be working in the lab now，for the light is still on.他们现在一定在实验室里工作，因为灯还亮着。(对正在发生的情况的

8、推测判断)(3)带有感情色彩，“_”，常指令人不快的事情。Must you smoke here? The car must break down just when I was about to start.写出下列句中must的含义You must practice your spoken English if you want to improve.表 Must you trouble him，just when he is busy doing the cooking？表 Karl must have seen Star Wars six or seven times.表 4 情态动词

9、have donemust have doneshould/ought to have donemay/might have donecould have donecant/couldnt have done neednt have donePractice:From what you said，she _ you all about it.从你所说的来看，她一定把一切都告诉你了。You _ me earlier or I _ with them.你本应该早点告诉我，不然的话我可能就会和他们一块去了。You _ more careful.你本应该更小心一些的。You _ them about it.你本来没有必要告诉他们那件事。He couldnt possibly have said why.他肯定没说出个所以然来。学科网（北京）股份有限公司