Unit 4 Global warming Reading (),Learning aims,1. Learn and grasp the usages of important new words and expressions. 2. Master the usage of the sentence patterns.,.根据下列各句句意及所给单词的首字母或汉语提 示，写出各单词的正确形式。 1. A large q_ of rice is badly needed here. 2. Students are from a wide r_ of backgrounds. 3. She studied hard, and in c_ she passed the exam. 4. The park attracts 4 million visitors p_ year.,uantity,ange,onsequence,er,Leading-in,5. What sort of _ (燃料) do these machines need? 6. The _ (数据) is still being analysed. So dont be so worried. 7. A rainbow is a natural _ (现象) especially after a heavy rain. 8. The _ (曲线图) of export indicates a new success of the company.,graph,fuel,data,phenomenon,result _,1.发生，造成,come _,2.同意，赞成,_ to,3.大量的,_ of,4.导致,5.继续,keep _,.补全短语。,about,subscribe,quantities,in,on,Language points,come about用于疑问句时常与how连用。,come about 发生；造成 So how has this come about and does it matter? 那么，这是怎么发生的，会产生什么影响呢？ The accident came about because the driver drank too much. 事故的发生是因为司机喝了太多酒。,come across come along come to come out come up come up with,偶遇 进展；进步；一起来 总计；谈到 出版；开花 走近；发芽；被提出 提出（建议）；赶上,【知识拓展】,(1)（2016江苏高考）She has a mental toughness that did not _by chance. (2) He never remembered having _a man like that. (3) When will his new novel _?,【即学即练】选用短语的适当形式填空。 come across， come about， come out,come across,come out,come about,2. There is no doubt that the earth is becoming warmer and that it is human activity that has caused this global warming rather than a random but natural phenomenon. There is no doubt that .是固定句型，意为“毫无 疑问”，that引导的是同位语从句，用来进一步补充说明doubt的具体内容。 it is . that .在此句中构成强调句型，强调的是主 语human activity。强调句型除谓语不能强调外 可强调主语、宾语或状语。,【辨析】 There is no doubt that. There is some doubt whether. 主句为否定句时，doubt后使用连词 that。 主句为肯定句时，doubt 后使用连词 whether。,(1) There is no doubt _. 毫无疑问，他会赢得这次比赛。 (2) There is some doubt _. 他是否能及时赶到值得怀疑。,【即学即练】完成句子。,that he will win the competition,whether he will come in time,同意,订购,签在,捐了,3. subscribe (to) 同意；赞成；订购 Actually, she doesnt subscribe to your opinion. 事实上，她不_你的观点。 Which journal does the library subscribe to ? 图书馆_了哪一本杂志？ subscribe to 在上签署；向捐 He subscribed his name to the contract. 他把名字_了合同上。 He has subscribed much money to the flood area. 他已向洪水灾区_很多钱。,4. Without the “greenhouse effect”,the earth would be about thirty-three degrees Celsius cooler than it is. 如果没有温室效应，地球温度将比现在低大约33。 这是一个含蓄虚拟条件句。有时为了表达的需要，在 虚拟语气中并不总是出现 if 引导的条件句，而通过其 他手段来代替条件句。 But for electricity (= If there were no electricity)， there would be no modern industry 要是没有电，就不会有现代工业。,【名师点津】含蓄虚拟句的提示词 很多情况下表示虚拟的假设并不用条件从句表示出来，而是通过上下文，利用but for, but, or, otherwise等介词（短语）或连词来表示，这就是所谓的含蓄虚拟语气。 【即学即练】完成句子。 (1) Without air, man _on the earth. 没有空气的话，人类将不能在地球上生存。 (2) She was too busy, otherwise she _. 她太忙了，否则她就来帮助我们了。,couldnt exist,would have come to help us,5. quantity n.量；数量 A large quantity of food is needed in the flood area. Large quantities of food are needed in the flood area. 洪水灾区需要大量的食品。,Why does the lake smell terrible? Because large quantities of water _ (pollute).,a quantity of+ 可数/不可数名词 谓语动词用单数 quantities of +可数/不可数名词 谓语动词用复数,have been polluted,tend to do sth. 倾向于做某事 tend to/ towards sth. 倾向于某事 tend to sb. / sth. 照顾 tendency n. 倾向；趋势,6.tend vi. 趋向；易于；照顾 vt. 照顾；护理 When Im tired, I tend to make mistakes. 我累了的时候，容易犯错误。 On that matter I tend to your opinion. 在那个问题上，我倾向于你的观点。 These nurses were tending to the injured. 这些护士正在照顾伤员。,(1) (2018全国卷) Many people tend _ (talk) about traditions without knowing what they really are. (2) Prices continue to show an upward _(tend).,【即学即练】,单句语法填空。,to talk,tendency,7. result in 导致, 造成 =lead to result from 由造成；因而产生 result in 意为“导致；造成”，后接导致某事的结 果，句子的主语是原因。 result from 表示“由造成，因而产生”， 后接导致某事的原因，句子的主语是结果。 His stomach ache resulted from his eating too much. 由于吃得太多，他肚子疼。 The accident resulted in his death. 这一事故导致他的死亡。,【名师点津】,用 result in&result from的适当形式填空 (1) The accident _ the death of three people. (2) His failure _ not working hard enough. (3) It has been reported that the traffic accident _ his drink-driving.,resulted in,resulted from,【即学即练】,resulted from,8. oppose vt. (doing) sth. 反对；反抗; 与(某人)较量 opposed adj. 反对的；对立的 be opposed to (doing) sth. 反对做 （2017全国卷）Many farmers opposed the plan because they feared that wolves would kill their farm animals or pets. 许多农民反对这个计划，因为他们担 心狼会杀死他们农场的牲畜或宠物。 We are opposed to getting there on foot. 我们反对步行去那里。,9. consequence n. 结果；后果；影响 They predict that any warming will be mild with few bad environmental consequences. 他们预言说，变暖的情况不会很严重，对环境的恶劣影响也不会太大。 【拓展】 in consequence 因此 as a consequence 结果= as a result as a consequence of 由于的结果=as a result of,(1) She worked hard at her lessons and _ got high marks. 她努力学习功