外研版必修四Unit2知识点详析及练习有答案.docx

1、外研版必修四Unit2知识点详析及练习有答案重点单词详析：（1）permit【原句回放】You should check the cab has a business permit, and make sure you ask for a receipt. 你应该确定司机有驾驶执照，而且一定要索要发票。【点拨】permit n. 允许，许可（常指成文的允许）；通行证；许可证，执照；v. 许可，允许permit sb. to do sth. 准许某人做某事permit doing sth. 准许做某事Weather permitting, If weather permits, 如果天气许可的话

2、/假如天气好的话，Weather permitting, well climb the mountain. 天气许可的话，我们就去爬山。with/without ones permission 在某人的允许下/未经某人的许可Please permit me to say a few words. 请允许我说几句话。Its illegal to read peoples private letters without permission.未经允许看别人的私人信件是不合法的。【拓展】permission n. 准许；许可；批准ask for permission 请求许可permit与allow

3、都可以作“允许”解。permit强调权威性的正式批准，表示“允许、准许”；allow暗含默许、放纵之意，有并不禁止的含义，表示“容许”。（2）limit 【原句回放】Buses numbered 1 to 100 are limited to travel within the city centre. 公交线1到100路都是仅限于市中心内的。【点拨】limit n. 限度，限制范围；极限；vt. 限制(定)a limit to/on 对的限制limit sth. to/be limited to 限制在I shall limit myself to three aspects of the

4、subject. 我仅探讨这一问题的三个方面。Each branch of the government has limited powers. 政府的每一个部门拥有有限的权力。Theres no limit to what you can do if you try.如果你努力，没有什么你不能做的。【拓展】limited adj. 有限的；limitless adj. 无限的（3）convenient 【原句回放】Trains are fast and convenient, but rush hours can be terrible. 地铁方便快捷，但在高峰期情况会很糟糕。【点拨】con

5、venient adj. 方便的；便利的sth. be convenient for/to sb. 对某人来说是方便的at ones convenience 在某人方便时It is convenient for sb. to do sth. 对某人来说做某事方便。convenient的主语是it或其他的物，而不能用人。 I cant see him now; its not convenient. 我现在不便见他。Will it be convenient for you to start work tomorrow?你明天开始工作方便吗？【拓展】convenience n. 方便，便利；便利

6、的事物、用具inconvenient adj. 不方便的；不便利的inconvenience n. 不方便；不便（4）provide【原句回放】Public transport provides a cheap way to get around in Beijing. 公共交通为人们游览北京提供了低价位的出行方式。【点拨】provide vt. 提供，供应；准备；赡养provide sth. 提供某物provide sth. for sb. 提供某物给某人provide sb. with sth. 给某人提供某物He had a large family to provide for.他有一

7、个大家庭要养活。Youd better provide against an earthquake. 你最好做预防地震的准备。The school will provide tents, but we must bring our own food. 学校会提供帐篷，但是我们必须自带食物。Our school provides books for students. =Our school provides students with books.我们学校给学生们提供书本。（5）mood【原句回放】Motorists could take a bus into the city centre

8、and arrive at work or the shops relaxed and in a good mood. 驾驶者可以轻松地乘公交车进入市中心，心情愉快地工作或购物。【点拨】mood n. 心情；情绪；语气；状态in a good / bad mood 心情好/不好in no mood for sth./ to do sth. 不想/无意做某事When you are in a bad mood, how to adjust yourself?在心情不好的时候，怎样调节自己的情绪？ Good health with the happy mood which comes from i

9、t, is the best fund of happiness.良好的健康状况和由之而来的愉快心情，是幸福的最好基金。Im not in the mood to argue with you. 我没有心情跟你争论。【拓展】moody adj. 喜怒无常的;抑郁的moodily adv. 心情不稳地; 易生气地mood指“在某一特定时间内由某种感情或欲望而引起的心情或情绪”。temper除指“心情，情绪”外，还有“性情，脾气”的含义。He is in the mood for listening to various music. 他想听各种不同的音乐。I found it hard to k

10、eep my temper with so many things going wrong. 出了这么多乱子，我很难不发脾气。（6）match【原句回放】Now match some of the words with their definitions. 现在把一些单词和它们的定义匹配。【点拨】match n. 比赛；对手；相配的人（或物）；火柴；vt. 相同；适应；使较量；使等同于match.with. 和相配/相称Her nails were painted bright red to match her dress. 她的指甲涂成了大红色，为的是与裙子相配。Our value syst

11、em does not match with their value system. 我们的价值体系和他们的并不相同。It can take time and effort to match buyers and sellers. 买卖双方牵线可能需要一些时间和工夫。Moira was a perfect match for him. 莫伊拉和他简直是绝配。His record has never been matched. 他的纪录尚无人能及。（7）explore 【原句回放】Tricycles are worth using if you want to explore the narro

12、w alleys (hutong) of old Beijing. 如果想去老北京的胡同探秘，三轮脚踏车是绝对值得一试的。【点拨】explore vt. 探索；探测；探险；考察；研究Scientists launched rockets to explore space. 科学家发射火箭用来探测太空。We explored several solutions to the problems.我们探讨了几种解决该问题的办法。The meeting will also explore ways to help poor countries adapt to these changes.会议也将探索

13、如何帮助贫困国家适应这些改变的方法。【拓展】exploration n. 勘探，探索exploratory adj. 勘探的，探索的explorer n. 探索者，勘探者（8）follow【原句回放】Good pronunciation needs a lot of training, imitation and practice. 好的发音需要大量的训练、模仿和练习。【点拨】follow vt. 跟随；遵循；追求；密切注意，注视；注意；倾听；vi. 跟随；接着；n. 跟随；追随follow the crowd 随大流， 从众follow the fashion 赶时髦follow a mid

14、dle course 采取折衷办法follow on 继续下去follow suit 跟着做follow through 坚持到底as follow 依下列各项We followed him up the steps into a large hall.我们跟他上了台阶，进入一个大厅。Other problems may follow.其它问题也许会随之而来。What follows is an eye-witness account.接下来是目击者的陈述。Go through the arch and follow the path. 穿过拱门沿小径往前走。（9）suffer【原句回放】Bu

15、t even cities in developed countries such as the US suffer. 但是在一些像美国一样的发达国家的城市里交通阻塞现象也十分严重。 【点拨】suffer vi. 受痛苦；受损害；变糟；变差；vt. 忍受；容忍；容许；遭受。 注意：suffer作“患病”讲时，后接from，有时接“with +疾病”；作“受苦”讲时，后接from；作及物动词时，后常接不利的事做宾语，如loss, pain, hardship等抽象名词，但不用被动语态。Can you assure me that my father is not suffering? 你能保证我

16、父亲不会受罪吗？He was eventually diagnosed as suffering from terminal cancer. 他最终被诊断出患了晚期癌症。That company suffered a great loss.那家公司受到很大损失。重点短语详析：（1）be/get stuck in 【原句回放】Have you ever been stuck in a traffic jam? 你曾经陷入交通堵塞中过吗？【点拨】be/get stuck in被困在；卡住了，卡壳了，进行不下去了She got stuck on the third question.她在第三个问题上

17、卡住了。The bus was/got stuck in the mud.汽车陷在泥里了。【拓展】get caught in 被困于；突然遭遇Getting caught in a snowstorm is a terrible experience.被困于暴风雪是一次糟糕的经历。（2）be (well) worth doing 【原句回放】Tricycles are worth using if you want to explore the narrow alleys (hutong) of old Beijing. 如果想去老北京的胡同探秘，三轮脚踏车是绝对值得一试的。【点拨】be (w

18、ell) worth doing (非常)值得做be worth (钱数、代价、价值) 值worthwhile adj. 值得的be worthy of 值得；配得上(不跟表示钱数的名词)be worthy of doing/being done 值得做(某事)be worthy to do/to be done 值得做(某事)Its worthwhile doing/to do sth. 做某事是值得的。注意：worth后面要加动名词的主动形式来表示被动含义，而be worthy of后的动名词及be worthy后面的不定式要根据实际情况用主动或被动形式。The deed is worth

19、y of praise. 这种行为值得称赞。The watch isnt worth that price.这个手表不值那个价。（3）get around 【原句回放】Say which means of transport you can use to get around your town.说一说你能用哪种交通方式在你的城镇周围游览。【点拨】get around 四处走动；（新闻或消息）传开；解决It quickly got around that Mark was back in town.马克回城的消息很快传开了。The stranger lost his way and got a

20、round in the street.那个陌生人迷了路，在大街上四处游逛。I dont know how hes going to get around that one.我不知道他打算如何处理此事。【拓展】get around/round/ about都可以表示“消息传开”，相当于不及物动词spread，常以“消息”等名词作主语。get across 理解；明白get on/along (with) 进展；相处get over 结束；康复；克服get down to (doing) sth. 开始认真做某事get through 接通（电话）；顺利通过（考试等）get out of（使）逃

21、避；避免；摆脱get off 出发，离开；下班；下车（4）under construction【原句回放】There are four underground lines in Beijing, and several lines are under construction. 北京有四条地铁线，还有几条正在建设之中。【点拨】under construction 在建设中The new railway is still under construction.新铁路还在建设之中。【拓展】under与某些名词连用可表示“处于某种状态之中”。 under attack 遭受攻击under repai

22、r 在修理中under control 在控制之中under discussion 在讨论中under the leadership of 在领导下My bike is under repair. 我的自行车正在修理中。Now the small country is under attack by several countries. 现在这个小国正在遭受几个国家的攻击。（5）in no time 【原句回放】Simply raise your hand, and a taxi appears in no time. 只要你招招手，马上会有出租车开过来。【点拨】in no time 马上；一

23、会儿He finished off two bowls of chicken noodles soup in no time.他很快吃完了两碗鸡汤面。【拓展】at one time 曾经；一度at a time 每次；一次 at all times 总是；随时；永远at times 有时；间或from time to time 不时；有时；偶尔at the same time 同时in time 及时；迟早；最后，终于on time 按时；准时 of all time 自古以来；从未有过（6）have a good view of【原句回放】Youll have a good view of

24、the rapidly changing city. 你会一览这个飞速发展城市的亮丽风景。【点拨】have a good view of 清楚地看到We can have a good view of the village from here. 我们从这能清楚地看到村子的景色。From their own operations in China, they have a good view of what the Chinese are up to. 这些公司通过自己在中国的企业，很好地了解中国在做什么。【拓展】at first view 初看come into view 进入眼帘重点句型详

25、析：（1）Why not.?【原句回放】Why not build more underground lines? 为什么不铺设更多的地下铁路呢？【点拨】why not .? 为什么不？Why not do .? = Why dont you do .? 这两个句型都用来表示提出忠告或建议，前者是后者的省略形式，前者用省略to的不定式，后者是完整的否定疑问句。Why not?也可单独使用，表示“为什么不行?（反问，不赞同）”“好啊!”“请（同意，赞同）”。另外，Why do .？也可用来表示“责备或指责”，表示没有必要或没有意义。It looks like to rain. Why not t

26、ake a raincoat?天像要下雨了。你为什么不带件雨衣呢？Since you have to stay at home, why dont you do some reading?既然你必须待在家里，为什么不读点书呢？You shouldnt go out with me.你不该跟我出去。Why not?为什么不行？Why argue with him? Hell never change his mind.为什么要和他争论？他永远也不会改变主意的。（2）祈使句【原句回放】Simply raise your hand, and a taxi appears in no time. 只要

27、你招招手，马上会有出租车开过来。【点拨】本句为“祈使句+and/or +简单句”结构。句型中的祈使句表示条件。祈使句表示请求、命令、叮嘱、邀请、劝告等，分为第二人称祈使句及第一、三人称祈使句。第二人称祈使句以动词原形开头，或在动词原形之前加do/dont。Be careful next time!下次小心！（Do）Come back early!（一定）早点回来！Dont be nervous! 别紧张！Never be late again! 千万别再迟到了！第一、三人称祈使句常以let开头。Lets (not) have a rest.咱们（别）休息吧。祈使句委婉的句型：Will you/

28、 would you/ could you +原形Would you do me a favor?请帮个忙好吗？巩固练习一、完成短语1. be connected _ 与相连 be_ connection with与有关 connect. _.把 接到上2. be/get _ in被困在 stick _坚持 stick out _ 坚持要求3. _ no time 立刻；马上 _ good/perfect time (表)走时很准 _ all time 有史以来4. get _ 四处走动 get _ from偏离(主题);摆脱 get _ 通过(法律等);经历5. switch _ 关掉 sw

29、itch _ 打开 switch _ (from/to)完全转变6. keep _ 保持冷静 keep _小声点 keep you _ 保持冷静7. no _ 没门儿 no _ 没问题8. _ hour交通高峰期 rush sb. _ doing sth. 催促某人做某事 rush _ 匆匆忙忙 _ a rush匆匆忙忙9. _ construction正在建设中 under _ 在控制之中 _ treatment在治疗中10. be _ a good mood心情好 be in _ mood to do sth.不想做某事 _ sb. in a good mood使某人心情愉快二、根据提示完

30、成句子1. They are usually red, and they _. (窗玻璃上陈列着每公里的价格标签)2. You should check the cab has a business permit, and _. ( 一定要索取发票)3. Public transport provides _. (廉价周游北京的方式)4. However, there is also a night bus service, _. (由编号在200到300之间的提供的)5. Minibuses with seats for 12 passengers _. (提供了一种可以代替昂贵的出租汽车和拥挤的大型公交车的替代物) in some area.6. 那本书顶多值5元钱。That book _ 5 Yuan at most.7.