Unit 2 No smoking ,please 1.go ahead * - Can I use your dictionary? - Go ahead. (你用吧）你用吧） * go ahead with ones work (go on with) * The policeman examined the cars and allowed them to go ahead. (往前走）往前走）归纳：归纳： ahead of 意为意为“在时间、空间上在在时间、空间上在之前之前”； 比比 好好 a. He is two classes _ (比比早）早）me.ahead of b. They are four hours _ (比比晚）晚） Beijing time.c. We finished the work _ (提前）提前）behindahead of time - Do you mind if I use your tape recorder?-_.A.Certainly, please do.B. No, you cant use it.C. Yes, of course not.D. No, go ahead 2.catch fire * Dry wood catches fire easily. set fire to = seton fire put out a fire break out (火灾）火灾） 发生发生a. Who_ the house is unknown. set fire to b. The fire _ at night . It was not _ until the firefighters came . broke out put out c. Turn off the gas. The pan is _.on fire 辨异辨异 be on fire 表静态表静态 ， catch fire 表动态表动态警示警示 注意区别注意区别 ： last ; spread ; make ; light 3. by 的用法的用法 （1） sell sth. by the pound (2) sell eggs by the dozen (3) lose the match by one goal (4) This room is forty feet by twenty. (5) rent a car by the day (week/month) (6) pay sb by the day/hour in calories/pounds/meters * Luckily , the bullet narrowly missed the captain _ an inch. (2002 上海高考题）上海高考题） A. by B. at C. to D. from4. custom/ habit custom 指长期形成的包括指长期形成的包括habit 在内的风俗，是社在内的风俗，是社 会风尚、礼仪、习惯的总和。多指社会或会风尚、礼仪、习惯的总和。多指社会或 群体的风俗、习惯。群体的风俗、习惯。 habit 指一种不断重复的行为，这种行为或倾向，指一种不断重复的行为，这种行为或倾向， 一时难以改变。多指个人习惯。一时难以改变。多指个人习惯。 Many people are still in _ habit of writing silly things in _ public places. (NMET 94) A. the ; the B. a; 不填不填 C. the ; 不填不填 D. 不填；不填； the * Once_(form), a bad habit is hard to kick. formed归纳：归纳：* form /get into/ fall into/ develop a habit break away from/ kick/ give up/get out of a bad habit When you go abroad, you find its difficult to get used to other countries _. A. customs B. habits C. practice D. instructionsA5. chance n. 机会，希望，可能性机会，希望，可能性 * There is no chance _ the child will get well.that There is little chance of their team winning.归纳归纳: Theres no chance /hope of doing sth. Theres no need /time for sth/sb to do sth Theres no doubt about sth/ that Theres no knowing when he will be back.by chance 归纳：归纳： chance to do sth * It chanced that I was out when he called . * I chanced to be out when he called.6. reduce v. * The number of the words in the report should be reduced to 800. 警示警示 ： increase /rise/grow 与与by 搭配，表程度；搭配，表程度； 与与 to搭配，表搭配，表“增加或减少到增加或减少到”The number of the employees has grown from 1,000 to 1,200 . This means it has risen _ 20 percent. ( 99 上海高考题）上海高考题） A. by B. at C. to D. with 7.compare v. 比较比较 compare with / to 跟跟相比较相比较 compare to 把把 比喻成比喻成 * Compare yourself with your classmates ,and youll find you dont study so hard. * Comparing these two languages, you know the differences. * People compared him to be a little mouse. * Girls are often compared to flowers. * compared to/with 跟跟 相比起来（在句中做相比起来（在句中做 状语，可放在句首或句尾）状语，可放在句首或句尾） Compared to/with many women , you are indeed very lucky. * compare notes (with sb)8. give up 停止，放弃停止，放弃 give up sth /doing sth * Not being in good health, he has to give up playing football. * Smoking does great harm to you, so its better to give it up. *All the girls swam the lake except two, who gave up halfway. give away 1) 赠送赠送 He gave away most of his money to charity. 2) 泄露泄露 Someone in the gang gave him away to the police.gave off 散发，发出（液体，气体，气味）散发，发出（液体，气体，气味）give in (to) give out 1) hand out 2) announce The news of the Presidents death was given out in a radio broadcast. 3)be used up 用光用光 After a month, their food supply gave out. 4) be worn out 筋疲力尽筋疲力尽9.share v. share sth(out) (among/between sb.) share (sth) with sb share (in) sth n. 分得的一份分得的一份Who has eaten my share of the sweets?警示警示 share , spare,spend 区别区别 * Let Harry play with your toys as well, Clare- you must learn to _.(NMET 2000) A. support B. care C. spare D. share D10. therefore/ so therefore adv . so conj. She went to a party and therefore she didnt study her lessons. * He injured his leg and _ couldnt play in the game. A. therefore B. however C. in which case D. in this way A11. go without 不吃，不用；不吃，不用； 没有没有 勉强对付勉强对付 e.g. Sometimes they went for days without washing their faces. * The climbers had to _ hot food in the snow covered mountain area for three days. A. eat B. go without C. go with D. bring B12. permission n. 同意；许可同意；许可 归纳：归纳： with ones permission without permission ask(sb. for) /give permission permit n. 许可证许可证 ones driving /work permit v. permit sb to do sth permit doing sth be permitted to do sth e.g. The rules of the club do not permit smoking. 与与permit 用法相似的用法相似的 词还有词还有allow ,advise, forbid Sentence structure if not /so /any/ possible/necessary a.if not 省略句，代替上文的短语与从句省略句，代替上文的短语与从句 Please join us if you can. If not, call me up.b. if so 用用so 避免重复前面所说过的内容，用于代避免重复前面所说过的内容，用于代替肯定的从句替肯定的从句 If so, why didnt you tell me? c. if any 若有，即使有若有，即使有 Im afraid theres very little food left, if any. d. Send it by E-mail if (it is) necessary. e. Take this camera with you , if possible. Grammar : 表语从句表语从句 （1） that 连接（不可省略）连接（不可省略） The reason is that I missed the early bus. ( 2 ) whether 引导（注意表语从句不可用引导（注意表语从句不可用if) The question is whether we shall attend the meeting or not. ( 3） 连接代词和连接副词连接代词和连接副词(what,who,where等）等） (4) 其他连词其他连词(because ,as if) This is because he doesnt know it. She looks as if she were a boy. 2. 高考常考点主要是引导词的正确选择高考常考点主要是引导词的正确选择My trouble is that I dont have much experience in this kind of work. 课堂检测课堂检测 1.Although she received a lot of money ,she _ sad because she could never see her son again. A. continued B. went on C. remained D. kept on 2. - Smoking is bad for your health. -Yes, I know. But I simply cant _.(2002北北 京春招）京春招） A. give it up B. give it in C. give it out D. give it away 3. Last year the number of death increased by 2% - 5% ,_ the year before last. A. comparing to B. comparing with C. to compare with D. compared with 4.-Do you mind if I keep pets in this building ?- _ (2002 上海）上海） A. Id rather you didnt , actually. B. Of course not. Its not allowed here. C. Great! I love pets. D. No, you cant .5. Perseverance is a kind of quality and thats _ it takes to do anything well. (2002上海高考题）上海高考题） A. what B. that C. which D. why 6. The question he asked was _ the electrical equipment should be stored .A. what B. which C. where D. that 7. -May I move your bag a little and take this seat? - _. A. I dont mind. B. Go ahead C. It doesnt matter D. Thats all right.8. The director was angry because no one _ his opinion. A. kept B. held C. agreed D. shared