unit6Electricity.docx

1、unit6ElectricityUnit 6 Electricitywords精讲1. electricity, n.电力；电流，静电；高涨的情绪；紧张While I was cooking supper, the electricity went off.链接：electrical电的, 有关电的；electric电的, 导电的, 电动的；electron电子2. foolish，adj.愚蠢的；鲁莽的；荒谬的，可笑的如：He was angry with himself for having made such a foolish mistake.链接：fool (n.) 傻瓜 + ish

2、 foolish (adj.) 愚蠢的What a fool I was to believe he is a good man!3. identify, vt.识别、认出，确定，使参与，把看成一样；vi.确定；认同如：Could you identify your coat among a hundred others.链接：identical adj 同样的；identification n. 辨认, 鉴定, 证明; identify v. 识别, 鉴别,确定4. cable, n. 缆绳绳索；电学电缆；巨缆 ;vt. 发电报至；电传；固定系牢如：Steel cable will be u

3、sed to replace worn ropes.Cable TV 有线电视 5. moment, n. 瞬间，片刻；时刻；重要，紧要; 红极一时如：Ill be back in a moment.链接：for the moment暂时目前； at the (或 this) moment马上，任何一刻，随时。6. touch, vt.触摸；使某物与轻轻接触； n.触摸，碰；触觉，润色，痕迹；vi.接触；联系如：He kept in touch with us while he was on vacation.链接：get in touch with 和.取得联系;keep in touch

4、with 和保持联系。二Phrases精讲1. (be) careful with小心对待;谨慎处理These glasses are very expensive, so he is very careful with them.Be careful with those fireworks. They may cause fire.2. connect to（使）连接；联结Connect the hose to the tap and turn on the tap.4. switch off关(电灯,机器)Please switch the light off before leavin

5、g the room.5. turn off 关上 (switch on, turn on打开)In order to save electricity, please turn off/ switch off all the lights when you leave the room.三、知识详解1. Im going to buy a packet of sweets.a packet of 一袋。其后可接可数名词复数或不可数名词用来表示数量。不可数名词没有复数形式，在表示数量时，常用“a+单位量词+of+不可数名词”结构。a+单位量词+of+不可数名词a piece of meat;

6、a piece of paper; a glass of apple juice; a bag of milka +单位量词+of+可数名词复数a basket of eggs; a bag of apples数词+单位量词+of+不可数名词two glasses of water; three cups of tea数词+单位量词+of+可数名词复数two packets of sweets ; three bags of pencils2. It is like water, in a wayit a way 在某种程度上In a way, you are right. 在某种程度上,你是

7、对的.与way的相关短语:In the way 妨碍;挡道His hobby sometimes gets in the way of his studies. 有时他的爱好妨碍了他的学业.on the way 在途中;在路中He is on the way to school now. 他现在在上学的途中.by the way 顺便问一下By the way, who is Tom? 顺便问一下,谁是汤姆?all the way 一直He studies hard all the way. 他学习一直很努力.3. Electricity comes into our flat through

8、 thin wires. 电通过细电线进入我们的公寓.come into 进入之内Water comes into our houses through pipes(管线；管道；管子).4. These are connected to cables under the streetconnect 连接 常用结构: be connected to sth. 连接到 ;connect sth. to/with 把和连接起来.Turn on your computer and connect it to the Internet.The railway line connects Wuhan to

9、 Shanghai.5. A moment later, Daisy came back.A moment later 一会儿，没多久A moment later, my friend came down . 过不多久，我的朋友下来了。It is overcast in the sky. It must rain a moment later. 天阴沉沉的，过一会儿一定会下雨。The waiter goes into the room with the beer a moment later.片刻之后，服务员端着啤酒走进了雅间。(1)moment 可数名词,意为”瞬间;片刻”Id like t

10、o talk to you for a moment.与moment相关的短语: a moment ago 刚刚;刚才He was here a moment ago. at the moment 现在;此刻He is at home at the moment.wait a moment 等一会儿Wait a moment, please.(2) later 副词,意为”后来;以后”6. Batteries provide toy cars with(p74)provide sb. with sth. 供应给某人某物The sun provides us with light and hea

11、t. “为某人提供某物”还可以用 provide sth for sb.7. .speak as many languages as Lo. 说和Lo一样多的语言. “as many + 复数名词+as ” 意为”和一样多的”I have as many books as you. 我和你有一样多的书.“as much +不可数名词+as” 意为”和一样多的”My brother drinks as much milk as I every day.8. share cups with others 与别人合用杯子 share sth. with sb. 与某人合用/分享某物Lucy shar

12、es a bedroom with Lily. 露西和莉莉合用一间卧室.9. Keep the outside of the pot dry. 让锅的外表保持干燥。(1 )“keep + sb. / sth. + 形容词” 意为“让某人/某物保持某种状态”。(2) keep doing sth. 连续不断地做某事，一直做。强调不断重复的动作。Li Lei keeps buying books about cars. 李雷不断地买有关车的书。(3) keep sb./ sth. doing sth. 让某人不断地做某事(4) keep sb. from doing sth. 阻止某人做某事We

13、must keep them from getting to know our plans. 我们必须防止他们知道我们的计划。10. because it might start a fire. 因为它可能会引起火灾。might 情态动词，意为“可能，也许”。Im afraid it might rain today. 恐怕今天会下雨。11. Stand at least one metre away from the microwave when it is on.at least 至少A child must sleep at least eight hours a day.You sho

14、uld at least have warned her. 你至少该警告她。与least有关的短语：(1) not in the least 一点也不He is not in the least worried about his future.他一点也不担心他的未来。(2) least of all 最不的Nobody cared, least of all my little brother. 没有人在意，更不用说我的小弟弟了。12. make sure it is microwave safe. 确保它适用于微波炉。Make sure 务必，确信13. Go out alone take

15、 the medicine on time (P79)alone 单独的;独立的-指无人陪伴,不表示内心的感觉lonely 孤独的;荒凉的;寂寞的-内心世界的孤独感on time 准时;按时in time 及时Please come on time. 请准时来.Youre just in time. 你正好赶到.14. You must switch off the electricity. (p81)switch off 关闭When the clock struck twelve, I switched off TV and went to bed.时钟敲响十二点时, 我关了电视上床睡觉。

16、switch n.开关Where is the light switch?电灯开关在哪儿?vt. 转换He is always switching jobs.他总是变换工作。15make sure it is microwave safe. 确保它适用于微波炉。Make sure 务必，确信课堂练习1. Mum makes me eat an apple every day _ the doctor away.A. keeps B. is kept C. to keep D. kept2. Farmers have become _ in our hometown in recent year

17、s.A. more and more rich B. richer and richer C. more rich and more rich3. With the help of the new technology, you _ e-mail your friends by mobile phone.A. can B. must C. need D. should4. -_ I swim here? -Im sorry. Children _ swim alone here.A. Must; cant B. May; must C. Can; mustnt D. Cant; can5. Y

18、ou _ jump onto a bus while it is still moving. It is too dangerous.A. can B. must C. cant D. mustnt6. -Can he speak English?-_.A. Yes, he does B. Yes, he didC. Yes, he can D. Yes, he must8. _ call me Mimi! Its my cats name.A. Not B. Doesnt C. Dont D. Be not9. Look, the dining hall is right on _ side

19、 of the street.A. another B. other C. the another D. the other10. -What can I do for you? -Id like two _.A. packet of tea B. packets of appleC. packets of tea D. packet of apples11.Its too late. Its time to go to bed. Lily, _ the TV.A. switch on B. switch off C. turn up D. close12. The computer is c

20、onnected _ a machine.A.at B. to C. on D. in13. I asked him twice. But he didnt _ my questions.A. answers B. answer to C. reply D. reply to14. I washed a lot of clothes. Who can _?A. tidy up them B. tidy them upC. tidy it up D. tidy up it15. About _ people took part in planting trees last year.A. mil

21、lion of B. two millionsC. two million D. two millions of四、语法讲解Grammar精讲：情态动词1、情态动词的定义: 情态动词是一种本身有一定的词义,表示说话人的情绪,态度或语气的动词,但不能单独作谓语, 只能和其他动词原形构成谓语。We can be there on time tomorrow. 我们明天能按时去那儿。May I have your name? 我能知道你的名字吗？Shall we begin now? 我们现在就开始吗？ You must obey the school rules.你必须遵守校规。2、情态动词数量不

22、多,但用途广泛,主要有下列:can (could), may (might), must, need, ought to, dare (dared), shall (should), will (would) .3、情态动词的位置: 情态动词在句中放在谓语动词之前, 谓语动词前若有助动词,则在助动词之前,疑问句中, 情态动词则在主语之前。I can see you. Come here. 我能看见你，过来吧。He must have been away.他一定走了。What can I do for you? 你要什么？How dare you treat us like that！你怎能那样

23、对待我们！4、情态动词的特点: 情态动词无人称和数的变化, 情态动词后面跟的动词需用原形,否定式构成是在情态动词后面加 not。个别情态动词有现在式和过去式两种形式, 过去式用来表达更加客气, 委婉的语气, 时态性不强, 可用于过去，现在或将来。 He could be here soon. 他很快就来。We cant carry the heavy box. 我们搬不动那箱子。Im sorry I cant help you. 对不起，我帮不上你。5、情态动词的用法:can (could) 表示说话人能,可以,同意,准许,以及客观条件许可,could 为 can 的过去式。Can you p

24、ass me the books? 你能给我递一下书吗 ?Could you help me, please? 请问,你能帮助我吗?5、can 和could 只能用于现在式和过去式两种时态,将来时态用 be able to 来表示。He could help us at all. 他完全可以帮助我们。With the teachers help,I shall be able to speak English correctly. 由于老师的帮助,我将能准确地讲英语。6、 may (might) 可以, 表示说话人同意,许可或请求对方许可。You may take the book home.

25、 你可以把书带回家去.May I come in? 我可以进来吗?May I use your dictionary? 我可以用你的词典吗?You may put on more clothes. 你可以多穿点衣服.He said he might lend us some money. 他说他可以借给我们一些钱。may 否定式为 may notmight 是may 的过去式, 有两种用法, 一种表示过去式，一种表示虚拟语气, 使语气更加委婉, 客气或对可能性的怀疑。He told me he might be here on time. 他说他能按时间来。Might I borrow som

26、e money now. 我可以借点钱吗?He might be alive. 他可能还活着。7、Must 必须,应该,一定,准是, 表示说话人认为有必要做某事, 命令, 要求别人做某事以及对事物的推测。must 用来指一般现在时和一般将来时, 过去式可用 have to 的过去式代替。I must finish my work today.我今天必须完成我的工作。You mustnt work all the time. 你不能老是工作。Must I return the book tomorrow? 我必须明天还书吗?After such a long walk, you must be

27、tired. 走了这么长的路,你一定困了。He must be the man I am looking for. 他一定是我要找的人。He had to go because of somebodys calling him that day. 那天他要走是因为有人叫他。Must 的否定形式 must not 表示“不应该”或“不许可”，语气比较强烈。Passengers must not walk across the railway line. 旅客不要横穿马路。注意：说“不必”须用need not . 如：Must we hand in our homework today?-No,

28、you needt. 我们今天必须交家庭作业吗？-不，不必今天交。must + have + 过去分词,表示现在对过去事物的推测。He must have told my parents about it.他一定把这件事情告诉我父母亲了。He must have received my letter now. 他现在一定收到我的信了Its six oclock already, we must have been late again.已经六点钟了，我们一定又迟到了。must 和 have to 的区别: must 表示说话人的主观思想, have to 表示客观需要。You must do

29、it now. 你必需现在就干。(说话人认为必须现在干)I have to go now. 我得走了。(客观条件必须现在走)need 需要 多用在否定式或疑问句中.Need I attend the meeting tomorrow?我需要明天参加会议吗?You need not hand in the paper this week. 这一周你不必交论文。8、need 是一个情态动词, 他的用法完全和其他情态动词一样, 但 need 还可当作实义动词使用, 这时 need 就象其他动词一样,有第三人称,单复数, 后面加带 to 的动词等特性。I need a bike to go to school. 我上学需要一辆自行车。Do you need a dictionary? 你需要词典吗?She needs a ne