《chapter4adangerousservant》学案教案

1、1. dangerous adj.危险的danger n. 习惯用语： in danger 处于危险中2. servantn.佣人、仆人serve v. 接待，服务 service n. 服务3. electricity n. 电electric adj. 电的；用电的 electrical adj. 用电的；与电有关的4. but sth. in packets 成包买习惯用语：buy 1= spend on s th.5. flow（into, through, .） v.流；流动6. explanation n.解释；说明explain v.解释7. invisible adj.看不见的

2、，不可见的反义词：visible adj. 看得见的vision n. 视力；视野have good / normal vision 视力好 / 正常8. energy n. 能量；能heat energy 热能 light energy 光能9. connect v. （使）连接；联结习惯用语： connect A to / with Bconnect A and B10. bury（buried, buried）v. 把（某物）掩藏在地下习惯用语： bury one s nose in a book 埋头看书11. power n. （ 1）电力供应a power station 发电厂；

3、发电站（2）能力powerless adj.无能为力的 be powerless to do sth.powerful adj. 强有力的 powerful weapons 强大的武器12. contain v. 包含；含有；容纳container n. 容器13. chemical （ 1 ） n. 化学物质（ 2） adj. 化学的chemical changes 化学变化chemistry n. 化学chemist n.化学家；药剂师14. produce v. 生产product n.产品meat products 肉制品production n. 生产；产量二、句式1. Althou

4、gh electricity is much more dangerous than water,尽管电比水要危险得多，（ 1 ） although conj. = though 虽然；尽管（2） much more dangerous than much 用来修饰比较级可以修饰比较级的词much, a lot, far, 得多 a little, a bit, 一点儿even 甚至， still 仍然2. Can you tell me what it looks like?你能告诉我它看起来像什么吗？3. We call the thick wires cables. 我们把粗电线叫做电缆

5、。4. We can change it into forms of energy that we can see, hear or feel.That we can see, hear or feel 是定语从句，修饰energy 。 that 为关系代词，在定语从句中做宾语。三、语法May I / we ？这一类疑问句的肯定回答为Yes, please. 或Certainly;否定回答为Please don t. 或 No, you mustn t.随堂反馈 I. Choose the best answers II. ()1. John, look at the time. you pl

6、ay the piano at such a latehour?A.MustB.CanC. MayD. Need()2. There be any difficulty about passing the road test since you havepracticed a lot in the driving school. A. mustn tB. mustC.shouldn tD. needn t()3. Excuse me. you please pass me that cup?A. DoB. ShouldC.WouldD. Must()4. We forgot to bring

7、our tickets, but please let us enter, ?A. do youB. canweC. will youD. shall we()5. Black holes not be seen directly.A. canB. shouldC.mustD. need()6. Must he come to sign this paper himself? Yes, he .A. needB. mustC.mayD. will()7. The World Wide Webis sometimes jokingly called the World Wide Wait bec

8、auseit be very slow.A. shouldB. mustC.willD. can()8. Why don t you ask Mike to go with us? Thanks, .A. I willB. IwontcanD. I may()9. I think I ll give Bob a ring. You . You haven t been in touch with him for ages.A.willB.mayC. canD. should()10. Could I have a word with you, mum? Oh dear, if you .A.c

9、anB.mustC. mayD. should()11. The poor man needs our help, he?A. needB. needn tC.doesD. doesn t()12. The winner of the race is a tall and thin boy with thick glasses. Then it be my friend Mike. He is not good at running.A. mustn tB. cantC.mightD. shouldthe sentences as required: 1. My father bought m

10、e a new bicycle. (改为被动语态)A new bicycle for me by my father.2. Everything goes well. (改为反意疑问句) Everything goes well, ?3. They are running fast. (改为感叹句) they are running!4. She became ill because it was too cold. (改为简单句) She became ill the cold weather.5. He asked the girl: Why do you live in the coun

11、try? (改为间接引语)He asked the girl she in the country.III. Complete the sentences with the given words in their proper forms:1. I could not find my little brother because he was in the big crowd.(vision)2. He is good at all the subject except . (chemical)3. It is common knowledge that tigers are to peop

12、le. (danger)4. Phelps won eight gold medals at the Beijing Olympics, so he is knownin the world. (wide)5. You can find the books you want to borrow easily with the help of the .(library)IV. Complete the sentences with the given words in their proper forms:1. They (be) friends since they were boys.2. Tom often (go) to the school library to borrow books.3. By the end of last term, we (learn) more tha