Unit1语法-情态动词(学案)

1、Book 3-Unit 1 Grammar: Modal verbs(教师版)Stepl. Listen to an English song and fill in the blank with Modal verbs.I want to be with doyou - BONZODOG BANDThere are things thatbedoneThat are not yet begunThings that I doWhen I want to be with youAlthough we' refarI just want to be with you(2) I want

2、to be with you you hear me?I need you near meI want to be with youI need you near me, my loveapart(3)The two of us areYou' re with me in my heartNo one else oneMother of my sonNo one else doI just want to be with youme?I need you near meI want to be with youI need you near me, my love(4)1 want t

3、o be withyou you hearStep2. Explanation of the use of modal verbs、情态动词的基本用法情态动词表示说话人的预期或情绪，如可能、意愿、猜测、义务、需要等。情态动词有以下特征：1、情态动词有一定的词义，但不能，必须与其后的构成谓语;2、 情态动词没有的变 化，即不随主语的不同而变化；3、情态动词除ought和have外，后面只能接4、情态动词没有非谓语形式，即没有不 定式、分词等形式。5、但有些情态动词也有一般式和过去式 的变化，如 may/ might, will/ would, shall/ should等。情态动词的“时态”形式

4、并不 是时间区别的主要标志，不少情况下，情 态动词的现在形式和过去形式都可以用来 表示现在时间、过去时间和将来时间。e.g., 1) He can' finish his essay by this time.现在他不可能写完论文。2) You may use my dictionary.你可以用我的字典。3) We must study hard and make progressevery day.我们必须好好学习，天天向上。二、用法归纳1. can and couldLook at the sentencesand sum up the usage of the modal ve

5、rbs.1) Can you speak Japanese?2) He can'e at home now.3 ) Can/ Could I have a look?4) How can you be so rude?5) Can you lift this heavy box?6)Can this be true?7) This can' be done by him.8)It could be very interesting to go out for a drive.归纟纳 1: can and could(1) 表不,，常译为“能，会”如例句。(2) 表示对现在或过去

6、情况的时，只用在否定句或疑问句中，如例 句。(3) 表示 (在陈述句中属于”，在疑问句中属于“”)，常译为“可以”，如例句。(4) 用于否定句、疑问句中，表示等，如例句。(5) 用于肯定的陈述句中，表示理论上的可能性，也可表示一时的情况，如例 句。could可表示，多用于过 去，也可指现在，通常表示虚拟或作为的委婉形式。e.g., Can/ Could I use your cell pho ne?我可以用用你的手机吗？2. may and mightLook at the sentencesand sum up the usage of the modal verbs.1) Itmaybet

7、rue.2) May I ask you a question?3) May you be happy all your life.4) May you succeed!5) He may /might be very busy now.6) Your mother may /might not know the truth.归纟纳 2: may and might(1) 表示 ,常用于肯定和否定句中，如例句。(2) 表示 (在陈述句中属于,在疑问句中属于“”)，常译成“可以”，如例句。表示“”时，might 比may语气更委婉，类似could/与can。对其 一般疑问句的肯定回答可用 may

8、或can, 但要作出否定回答时要 用。mustn' 表示“不可以，不许”。(3) 用于祈使句，表示 ，如例句。(4) might比may语气更委婉may / might表示 时，表示对现在或将来要发生的事情把握不大，如例 句。might / may have done表示对过去发生的动作进行的。e.g., 1) He may have gone to the clinic.他可亠 能去医务室了。2) He might have read about the news in the newspaper他可能已经从报纸上知道这个消 息了。3. will and wouldLook at t

9、he sentencesand sum up the usage of the modal verbs.1) Will / Would you please post the letter for me?2) Go where you will.3) She asked if I would go with them.4) Oil will float on water.5) Ask him. He will know.6) When he was a child, he would often go skiing.7) Every family would have some sort of

10、 trouble.归纳 3: will and would(1) 表示意愿，will 表示,would 表示,女口例句。(2) 表示, 主要用于第二人称的疑问句中，will和would均可用， would 此时并不表过去，而表 示,如例句1。(3) 表示, will 表示现在的习惯，would表示过去的习惯，如例 句。(4) 表示, will用于谈论现在，would可用于谈论过去，也可用于谈论现在(语气较委婉),如例句。4. shall and shouldLook at the sentencesand sum up the usage of the modal verbs.1) You s

11、hall do as I say.2) ShallI open the window for you ?3) Nothing shall stop me doing it.4) Young people should learn how to use computers.5) Tell him that he shall have the booktomorrow.6) Shall he fetch somewater for you ?7) They left at 5:30. They should get there now.8) You should have told her the

12、truth earlier.归纳 4: shall and should(1) 在陈述句中，shall用于二、三人称表示、等，如例句。(2) 在疑问句中，用于一、三人称，用来表示。如例句。(3) should常表示、。如例句。(4) should have done 表示,意为本应该但”如例句。(5) should用于 时，表 应该，很可能”如例句。5. must and can'Look at the sentencesand sum up the usage of the modal verbs.1) He must be reading the novel now.2) You

13、mustd smoke here.3) It can' be true.4) You mustgo to see the film.5) You must hand in your homework today.6) It is all wet on the ground .It must haverained last.7) He can'have been at home last night, for the light was n'o n.归纳 5: must and cant(1) must 可以表示。“ must +动词原形”表示现在或经常发生的情况作。作此

14、意讲时，must的否定形式不是, 而是 ， 女口例句 。(2) mustn '表示 “不允许，禁止”，如例句。(3) must 表示， 多处于义务、责任或强制命令，如例句 。must表示“必须”，用于一般疑问句中，肯定回答 用,否定回答用.e.g., -Must we hand in our homeworktoday?我们今天必须交作业吗？-Yes, you must.是的，你们必须。/ No, you n eedn'/ don 'have to.不， 你们不必。(4) must表示,女口例句4。(5) must have done 表 示对,女口例句 。can

15、9;have done 表示对 ，如例句。Step 3.巩固练习(1)从每题所给的A、B、C、D四个选项中， 选出可以填入空白处的最佳选项。1) You needn' take an umbrella. It isn ' t going to rai n.Well, I don ' t know. Itdo.A. might B. need C. wouldD. should2) Since nobody gave him any help, he have done the research on his own.A. can B. must C. wouldD. n

16、eed3) He sleep, although he tried to,when he got on such a hunt for an idea until he had caught it.A. wouldn ' tB.shouldn ' t C. couldn 't D. mustn 't4) you interrupt now? Can' yousee I ' m on the phone? Sorry Sir, but it ' s urgent.A. Can B. ShouldC. MustD. Would5) One o

17、f our rules is that every student wear school uniform while at school.A. mightB. could C. shallD. will6) I got close enough to hear them speakingChinese, and I said“ Ni Hao, ” just as Ido in China.A. must B. might C. can D. should7) Ithank you too much for all yourhelp to my son while we were away f

18、rom home.A. won' tB. can' t C.canD. will8) Shall I inform him of the change of the schedule right now?I am afraid you, in case hecomes late for the meeting.A. willB. mustC. mayD. can9) . I don ' t realise James. Why did you in vite him?Don" tworry. He come. Hesaid he wasn ' t ce

19、rtain what his plans were.A. must notB. need notC. would not D. might not10) Jack described his father, who abrave boy many years ago, as a strongwilled man.A. would beB. would have beenC. must be D. must have beenKeys: 1-5: A B C C C 6-10: B B B D D(2) Exercise 2 on page 5 in your textbook.Step 4.

20、Homework(1) 从句子后面的括号中选择适当的情态 动词填空。1. You help him because you are hisbest friend. (could, should)2. He sit like that for hours when hewas in trouble. (will, would)3. She drive a car, but sometimes shegoes to school by bus. (can, could)4. Lisa said there be a few magazinesin that library, but she was

21、 not sure yet. (may, might)5. Does Jack go to work by bus? He should, but he not. He likesto go to work on foot. (may, can)6. You be tired. You have beenworking for only one hour. (mustn' t, ca7. I put away your notebook anduniform for you? (Shall, Should) Yes. Thank you.8. Mary have been well prepared forthe exam, for she got full marks in it. (may, must)(2) 从每题所给的 A 、B、C、D 四个选项中 , 选出可以填入空白处的最佳选项。1)As he had heart attack, he was told that he continue the work.A. needn't B. may not C. mustn'tD