高中英语必修三：Unit2 Healthy eating-语法篇（教师版）

1、.Unit2 Healthy eating语法篇_要求学生掌握本单元的重点语法-情态动词表示推测的用法。一、情态动词表推测：1. 大多数情态动词除表才能、答应、意志外，都可以表示推测，其程度有差异。按可能性程度的上下排列为：must will would ought to should 完全肯定 完全可能 很可能 can could may might 可能 有可能2. 区分情态动词的否认含义：may not或许不、可能不 might not可能不 cant 不可能mustn't不许、制止 shouldnt不应该 neednt 不必3. 情态动词表推测详细运用：情态动词可以对如今、进展

2、、过去推测。S主+情态动词 + be + adj对“性质“特征的推测S主+情态动词 + be + n对“职业“事物的推测S主+情态动词 + 动词原形对经常性行为的推测:I guess he might come tomorrow.S主+情态动词 + be + V-ing对进展着的行为的推测：He may be waiting at the station.S主+情态动词 + have + PP对过去的行为的推测情态动词表推测时：1.can只能用于否认句和疑问句2.must只能用于肯定句它的否认句和疑问句其实就用can来代替了3.如句中有情态动词 + 完成时，定是对过去的推测。4.句中如有表示不

3、肯定的话语：I am not sure; I dont know 之类，常选may /might的各种形式。5. “could +have done除了表示对过去的行为进展推测外，还可表示曾有才能做某事，但并没有做，或者表示某事可能发生但并没有发生，含有细微的责备或批评的意义，常译作“本来可以、“本来能等。这一用法一般只用于肯定句中。Eg. I could have passed the exam, but I didnt study hard.我本来可以通过考试，但却没努力学习4. 表示反劝的特殊的表推测形式1. could + have + P.P.表示本来能做到，但事实上没有做到。He

4、could have finished the task on time, but the heavy snow came.2) . couldnt +have + P.P.表示本来不能做到，但已经做到了。She could not have covered the whole distance, but in fact she arrived ahead of time.3) neednt + have + P.P.表示本不必做的，但已经做到了。She neednt have attended the meeting yesterday, but she did.4. should/ough

5、t to +have + P.P.表示该做而没有做The plant is dead. I should/ought to have given ot more water.5) shouldnt/ oughtnt to +have + P.P.表示不该做而做了。You oughtnt to / shouldnt have taken her bike without permission.5. 注意：must只能用于肯定句它的否认句和疑问句其实就用can来代替了1. must + have + P.P. 表示对过去肯定的推测，“一定是，准是The road is wet. It must h

6、ave rained yesterday.2. can + have + P.P. 表示对过去的推测限于问句中Can she have said so? 他可能这样说吗？3. cant + have + P.P. 表示对过去的否认推测He cannot have said such a foolish thing.二、情态动词表推测的反意疑问句1. 情态动词表推测的反意疑问句，简单来说，就是以情态动词后的时态为淮，如句子里有明确的时间状语，那么以其为准。2. 以 must 为例：Eg.1. You must be hungry now, arent you? 2. He must be wat

7、ching TV , isnt he ? 3 Tom must have lived her for a long time, hasnt he ?4. She must have arrived yesterday, didnt she?注：如选择题中以She must have arrived yesterday, didnt she？为例既有didnt she又有hasnt she那么以didnt she？为最正确答案。1. It_ be the vocabulary that caused you the problem in the exercise because you know

8、 a lot of words.A. may B. couldnt C. should D. neednt解析：根据句意“不可能是词汇导致了你习题中的问题，因为你知道了很多词汇。可以得出此处表示否认的推测。答案：B。2. 2019全国大纲Although you _find bargains in London, its not generally a cheap place to shop.A. should B. need C. must D. can解析：根据句意“尽管你能在伦敦找到廉价货，但是一般不是购物廉价的地方。此处can意为“能的意思。答案：D。3. 2019陕西My book,

9、 The House of Hades, is missing. Who _ have taken it?A. need B. must C. should D. could解析：根据句意“我的书丢了。可能会是谁拿走了呢？从语境分析,could在此处表示对过去“可能性的推测。答案：D。4.2019浙江 I_ myself moreit was a perfect day.A. shouldnt have enjoyed B. neednt have enjoyedC. wouldnt have enjoyed D. couldnt have enjoyed 解析：根据句意“我从未玩得更开心过这

10、是完美的一天。shouldnt have done表示“本不应该做而事实上已经做了；neednt have done表示“本没有必要做而事实上已经做了；wouldnt have done用于虚拟语气；couldnt have done表示“不可能做过。此处用not和比较级连用表达最高级的含义,意为“从未比这更快乐过。答案：D。5. If I_ it with my own eyes, I wouldn't have believed it.A. didn't see B. weren't seeing C. wouldn't see D. hadn't

11、seen解析：根据句意“假如不是亲眼所见，我根本不会相信，此题考察虚拟语气。与过去事实相反。答案：D。根底演练1. - What does the sign over there read? -“No person _ smoke or carry a lighted cigarette, cigar or pipe in this area. A. will B. may C. shall D. must2. -Im sorry. I_ at you the other day. - Forget it. I was a bit out of control myself.A. should

12、nt shout B. shouldnt have shouted C. mustnt shout D. mustnt have shouted3. My MP4 player isnt in my bag. Where _ I have put it? A. can B. must C. should D. would4. -She looks very happy. She_ have passed the exam. - I guess so. Its not difficult after all. A. should B. could C. must D. might5. -Wher

13、e is my dictionary? I remember I put it here yesterday.- You _ it in the wrong place. A. must put B. should have put C. might put D. might have putKeys: 1-5 CBACD稳固进步1. -I'm very sorry. I_ but I had a visitor at the last minute.A. would like have B. would like to C. had planned to D. were going

14、to2. - Haven't your returned the books to the school library?- No, I_, but I forgot.A. should B. must C. should have D. must have3. Most Chinese people are leading lives they_ just 20 years ago.A. could not be imagining B. could not be imagined C. could not have imagined. D. could not have been

15、imagined4. When_ if he had any idea what the novel was about, Jack kept silent. He_ have read it very carefully.A. asking; needn't B. asking; shouldn't C. asked; can't D. asked; mustn't5. Apple will need to replace the vital spark that he has brought to its affairs. And history sugge

16、sts that this _from another individual, not a management team, _ talented.A. can only come; however B. should only come; however C. only come; whatever D. must only come; whatever6. - Are you coming to Jeffs party? -Im not sure. I _ go to the concert instead.A. must B. would C. should D. might7. - I

17、t _ be Mary in the office. - Im sure it _ be her. I saw her off at the bus station just ten minutes ago.A. must; shouldnt B. should; cant C. must; cant D. can; mustnt 8. -Listen! Someone is knocking at the door. I _ be Father. - It _ be him; he is supposed to be back home tomorrow.A. may; may B. mus

18、t; cant C. can; cant D. could; must9. A left-luggage office is a place where bags _ be left for a short time, especially at a railway station.A. should B. can C. need D. may10. -You really shouldnt have shouted to them.- Right. I _ crazy then.A. must be B. must have been C. would have been D. should

19、 have beenKeys: 1-5 CCCCA 6-10DCABB一、 改正以下句子中的错误1. -May I come in? -No, you may not. I am having my voice recorded.2. -Must I finish the report today? -No you mustnt.3. I would get up very early, but now I dont.4. All the villagers could move to the safe place before flood arrived.5. The computer mu

20、stnt be yours. It belongs to someone else.6. You mustnt work tomorrow if you dont want to.7. In the old days my parents must work from morning till night.8. He is honest. He mustnt have done such a thing.9. She could get there in time, but she met with a traffic accident.10. I didnt need to buy this

21、 car. I have already got a new one.二、单项选择1. -My doctor mastered English in less than two years.-Did she? She _ have a gift for languages.A. canB. wouldC. should D. must2. -How did you do in the test?-Not so well. I _much better but I misread the directions for Part D.A. could do B. could have done C

22、. must have done D. should do3. -Sorry, Mum. I got a C in the exam-You _have done better, but you didnt try your best.A. wouldB. mustC. couldD. shall4. -We are worried about Tom. Why hasnt he come back?-Dont worry. He _ in a traffic jam.A. might be caught B. may have been caughtC. can have been caug

23、ht D. should have been caught5. -Why hasnt Steve contacted us up to now? _ anything have happened to him?-Im not sure ,but I guess something_.A. Must; mayB. Could; might C. May; must have D. Can; may haveKeys:一、1. you may not改为you must not/mustnt2. you mustnt改为you neednt/dont have to3. would改为used t

24、o4.could改为were able to5.mustnt 改为cant6. mustnt 改为neednt7.must改为had to8. mustnt 改为cant9.could get改为could have got10. didnt need to buy改为neednt have bought二、单项选择 1-5 DACBD_一、七选五 How to Turn Your Child into a Lifelong BookwormLiteracy is one of the most important skills we will ever develop over our li

25、fetimes. Most small children love books, looking at the pictures and hearing the story, but as they get older they often move away from books. 1 Join the library Libraries have changed a lot in recent years. 2 Take your child regularly and encourage them to take out books on whatever subject interes

26、ts them. Not just novelsMany parents think that reading counts if the child is reading a work of fiction or a novel. 3_ Non-fiction books are particularly attractive to boys. Kids especially love the sorts of books which allow them to make a decision between various paths and choose their own ending

27、s. Set an exampleIf your child never sees you reading, they arent going to pick up a book either. 4 Having plenty of books around the house makes reading more accessible and the normal thing to do when bored. If you struggle with reading and literacy, do something about it by going back to college o

28、r attending a special adult literacy course.Make their own booksIf your child dislikes reading, think about encouraging them to start writing their own stories and novels. Buy them a special notebook. Allow them to write whatever captures their imagination, and dont worry too much about messy handwr

29、iting or poor spelling. 5 A. So how do you keep your kids interested in books?B. As long as a child is reading, it doesnt matter what they are reading. C. Libraries will have a great range of books for children.D. There are newspapers printed especially for children.E. Reading and writing are often

30、thought of as two separate issues.F. The idea is to cause an interest in books, reading and fiction, and the rest will develop over time.G. Next time pick up a newspaper or a book and encourage your child to sit with you and read too.二、完型填空My sister and I grew up in a little village in England. Our

31、father was a struggling 1 , but I always knew he was 2 . He never criticized us, but used 3 to bring out our best. Hed say, “If you pour water on flowers, they flourish. If you dont give them water, they die. I 4 as a child I said something 5 about somebody, and my father said, “ 6 time you say some

32、thing unpleasant about somebody else, its a reflection of you. He explained that if I looked for the best 7 people, I would get the best 8 . From then on Ive always tried to 9 the principle in my life and later in running my company.Dads also always been very 10 . At 15, I started a magazine. It was

33、 11 a great deal of my time, and the headmaster of my school gave me a 12 ：stay in school or leave to work on my magazine.I decided to leave, and Dad tried to sway me from my decision, 13 any good father would. When he realized I had made up my mind, he said, “Richard, when I was 23, my dad 14 me to go into law. And Ive 15 regretted it. I wanted to be a biologist, 16 I didnt pursue my 17 .You know what you want. Go fulfill it.As 1