1、Unit 8 It must belong to Carla.Section A Grammar Focus 4c 九年级全一册 人教版Learning GoalsWarming UpGrammarSummaryExercises1 12345通过本课的学习，学生能够：掌握情态动词must,could,might,cant表示推测的不同用法。在真实情景中运用恰当的情态动词进行合理的推测。Learning GoalsWarming UpLets first enjoy a video.How do you feel after watching the video?Look at the lyr
2、ics(歌词).Can you tell the meaning of“can”in them?You can be the best.You can be a hero.You can move a mountain.ability Could you sing a song for us?He can sing very well.We must wear school uniforms every day.Miss Yi might be nervous.You should relax yourself.表请求表能力表必须表推测提建议Weve learned a lot about m
3、odal verbs.Now lets review some of them.Whose volleyball is this?It must be Carlas.She loves volleyball.Whose hair band is this?It could be Meis hair band.Or it might belong to Linda.They both have long hair.What did you see that night?Im not sure,but it cant be a dog.It was bigger.I think it might
4、be a bear or a wolf.两人一组，针对表格左侧的三个问题，运用情态动词must,cant,might和could 补充更多的推测。Presentation情态动词表示推测1.must 表示有把握的肯定的推测的时候，只用于肯定句，意为“一定；肯定”。The light is on.He must be at home now.灯亮着呢。他肯定在家。注意：mustnt 表示“禁止”。2.can和could 都可表示猜测，此时could不是can的过去式，could语气更委婉，意为“可能”。can 用于肯定句表示理论上的可能性，但实际不一定会发生；用于否定句表示有把握的推测，意为“不
5、可能，一定不”。Scotland can be very warm in September.九月的苏格兰有时会很暖和。I saw him at the library.He cant be at home now.我刚刚在图书馆看到他了。他这会儿肯定不在家。3.may和might都可表示猜测，此时might不是may的过去式，might语气更委婉。两者都可用于肯定句或疑问句，表示把握不大的推测。This volleyball might/may be Toms.He likes playing volleyball.这个排球可能是Tom的。他喜欢打排球。不同形式的情态动词表示不同的含义1.“
6、情态动词+动词原形”表示对目前事情的推测。e.g.The book must be Kates.这本书肯定是凯特的。2.“情态动词+be+现在分词”表示对正在发生的事情的推测。e.g.She must be doing her homework at home now.现在她一定正在家里做作业。3.表示对过去或已完成事件的推测用“情态动词+have done”。e.g.He must have known the bad news.他一定已经知道了这个坏消息。4.“There+情态动词+be+主语+现在分词形式”表示“可能/或许/一定有在做”。e.g.It is noisy.There mig
7、ht be some boys playing soccer.太吵了，可能是有些男孩在踢足球。4a.Choose the best way to complete each sentence using the words inbrackets.1.A:Wheres Jean?B:Im not sure.She _(is/might be/must be)in the laboratory.2.A:Everyone is going to the pool after school.B:Really?It _(must be/cant be/could be)hot outdoors.migh
8、t bemust bePracticen./lbrtri/实验室3.A:Thats the phone.B:Hmm.I wonder who it _(must be/could be/should be)4.A:I wonder if these are Jims glasses.B:They _(cant be/might be/could be)his.He doesnt wear glasses.5.A:I hear water running in the bathroom.B:It _(could be/must be/cant be)Carla.She was thinking
9、of taking a shower.could becant bemust be洗淋浴4b.Complete these responses.1A：Many people are wearing coats.B：The weather must be _.2A：Sally has been coughing a lot.B：She might be _.3A：This restaurant is always very crowded.B：The food _.4A：Whenever I try to read this book,I feel sleepy.B：It cant _.cold
10、illmust be deliciousbe interestingn./kt/外套adj./slipi/困倦的，瞌睡的4c.Look at this picture of a room.How much can you tell about the person who lives here?Is it a boy or a girl?What are his/her hobbies?Discuss your ideas with a partner.A：It could be a girls room because its very tidy.B：I guess so.But it mi
11、ght be a boys room because the clothes look like boys clothes.Production一、单项选择1.As a student,you _ hand in your homework on time.A.shouldB.canC.needD.might2.The little boy got zero in this exam.His mother _ angry when she sees the mark.A.must beB.cant beC.might beD.can beAExercisesA3.Must I return t
12、he book to you now?_,you _.You can do it tomorrow.A.No;needntB.No;mustntC.Yes;mustD.Yes;need4.Is this blue schoolbag Lucys?I am not sure.It _ be hers.A.mustB.mustnt C.cantD.may5.Children _ be told not to swim alone in the river.A.canB.mayC.mustD.mightADC二、根据汉语意思或用所给单词的正确形式填空6.There are many _(labora
13、tory)in our school.And the largest one was built last year.7.Of the two _(coat),Wendy will choose the cheaper one.8.现在埃米正在洗淋浴。请一会儿再给她打电话。Amy _ now.Please call her later.9.记住，吃了这些药片之后，你可能会犯困。Remember that you may _ after taking the pills.10.这个男人一定在等某个人。The man _ for somebody.laboratoriescoatsis taking a showerfeel sleepymust be waiting情态动词表推测：must:有把握的肯定的推测，只用于肯定句。cant:有把握的否定推测(注意不用mustnt;mustnt表禁止)。may/might/could:把握不大的推测。can:表示理论上的可能性，但实际不一定会发生Summary
