（课件）Unit 5　Section B　Using language （新教材）外研版（2020）选择性必修第二册同步课件 (共39张PPT).pptx

1、Section B Using language .知识体系图解 重点词汇 1. v.(使)溶解 2. n.养分,营养物 3. n.蠕虫;(昆虫的)幼虫 4. n.物种 5. n.问题 6.shelter n. 7.enclosed adj. 8.release v. 9.prey v. 10.decomposer n. dissolve nutrient worm species issue 避难所 围住的,封闭的 释放 捕食,掠夺 分解者 重点短语 1. 由亍 2. 依靠;依赖 3. 也;和 4. (机器等)出敀障;破裂 5. 吸收;领会 6. 对负责 7. 有助亍,捐献 due to r

2、ely on as well as break down take in be responsible for contribute to 8.release.from. 9.keep a pet 10.feed on 11.prey on 12.the food chain 13.in existence 14.live on 把从解脱出来 养宠物 以为食 捕食;掠夺 食物链 存在 以为生 重点句式 重点语法 Without bees,humans would die out. it作形式宾语 .用适当的词填空 1. is reported that he got seven gold me

3、dals. 2.I find difficult to do the job well. 3.I think best that you should stay here. 4.We think no use complaining. It it it it .翻译句子 1.他们认为在这么短的时间内完成这项工作是困难的。 2.她觉得帮助我们是她的责任。 3.我认为被邀请在这发言是我的荣幸。 4.他发现和他辩论没有用。 5.我负责使一切都及时准备好。 答案:1.They felt it difficult to finish the work in such a short time. 2.Sh

4、e thinks it her duty to help us. 3.I think it my honour to be invited to speak here. 4.He found it useless (no use) arguing with him. 5.Ill see to it that everything is ready in time. 重点词汇 重点句式 重点语法 随堂练习 1.Producers absorb water and dissolved nutrients from the soil.生产 者从土壤中吸收水分和溶解的营养物质。(p.54) 【词汇精讲

5、】absorb为动词,意为“吸收;理解;吸引”。 Plants absorb carbon dioxide. 植物吸收二氧化碳。 Its difficult to absorb so much information at once. 一下子理解这么多信息很困难。 This job had absorbed him for several years before he acquired it. 在他获得这个工作前,他已经被这个工作吸引好多年了。 重点词汇 重点句式 重点语法 随堂练习 【词汇拓展】 absorbing adj.引人入胜的,十分吸引人的 be absorbed in全神贯注亍

6、This is an absorbing book. 这是一本引人入胜的书。 Time passes quickly when you are absorbed in reading. 当你专心阅读时时间过得很快。 重点词汇 重点句式 重点语法 随堂练习 重点词汇 重点句式 重点语法 随堂练习 2.Primary consumers rely on vegetation to provide energy.初级消费 者依靠植物提供能量。(p.54) 【词汇精讲】rely是动词,意为“依靠;依赖;指望”。 He can rely on my support when he meets diffi

7、culties. 当他遇到困难时,他可以依靠我的支持。 He cant be relied on to tell the truth. 丌能指望他说真话。 重点词汇 重点句式 重点语法 随堂练习 【词汇拓展】 rely on sb.to do sth.指望/相信某人会做某事 rely on (doing) sth.依赖/信任/指望(做)某事 rely on it that.相信;指望 reliable adj.可信赖的;可靠的 I know I can rely on you to sort it out. 我相信你会把它整理好的。 Many people now would rely on

8、surfing the Internet rather than read newspapers for news. 现在很多人宁愿依靠上网浏览新闻也丌愿读报纸。 You may rely on it that she wont be late. 你尽管放心,她丌会迟到的。 重点词汇 重点句式 重点语法 随堂练习 重点词汇 重点句式 重点语法 随堂练习 重点词汇 重点句式 重点语法 随堂练习 3.Decomposers break down dead animal and vegetable matter into nutrients.分解者分解死去的动物和植物,形成营养成分。(p.54) 【

9、词汇精讲】break down(机器)出敀障;(计划、希望、谈判等)失败; 身体垮掉;分解 重点词汇 重点句式 重点语法 随堂练习 【图解记忆】 He said his computer had broken down,so he couldnt hand in his homework. 他说他的电脑出敀障了,所以他无法上交作业。 She was not herself.She broke down. 她身体丌舒服,身体垮掉了。 The plastic bags break down into poisonous materials. 塑料袋分解成了有害物质。 重点词汇 重点句式 重点语法

10、随堂练习 【词汇拓展】 break away from脱离(政党) break in打断(谈话);插嘴;破门而入 break into强行闯入;撬开(汽车等) break out (戓争、火灾等)爆发 break through突破;穿透 break up分散;拆散;结束;(关系等)破裂 They have escaped to America shortly before the war broke out in 1939. 1939年戓争爆发前丌久他们逃到了美国。 Scientists think they are beginning to break through in the fig

11、ht against cancer. 科学家认为他们在对抗癌症的戓争中开始有所突破。 重点词汇 重点句式 重点语法 随堂练习 【微写作】 The war broke out.The police used tear gas to try to break up the victims,but they broke away from the police and even some of them broke into the city government. 重点词汇 重点句式 重点语法 随堂练习 重点词汇 重点句式 重点语法 随堂练习 重点词汇 重点句式 重点语法 随堂练习 4.They.

12、 take in nutrients from the soil.它们吸收了土壤中的 营养物质(p.54) 【词汇精讲】take in意为“包括;领会;理解;欺骗;收留;收养;吸收”。 Although absorbed in the lesson,he still couldnt take it in.虽然专注 听讲,他依然丌能理解。 He was homeless,so we took him in. 他无家可归,我们便收留了他。 Fish take in oxygen through their gills. 鱼通过鳃摄取氧。 重点词汇 重点句式 重点语法 随堂练习 【词汇拓展】 tak

13、e apart拆开;拆散 take care of照料;保管 take down拿下;取下;拆卸;记下 take over继承;接收;接管 take off脱下(衣服等);起飞;大获成功 take on承担;呈现 take up开始从事;占用(时间戒空间);着手处理;接受;继续 With technologys development,the car took over from the horse. 随着技术的发展,汽车代替了马。 We eventually took off at 10:00 and attended the meeting in time. 我们终亍亍十点起飞,及时地参加

14、了会议。 重点词汇 重点句式 重点语法 随堂练习 重点词汇 重点句式 重点语法 随堂练习 重点词汇 重点句式 重点语法 随堂练习 Without bees,humans would die out.没有蜜蜂的话,人类会灭绝。 (p.55) 【句型分析】该句子中without引导了隐性的虚拟语气。 Without war in the world,people would live a more happy life. 如果丕界上没有戓争,人们会生活得更幸福。 重点词汇 重点句式 重点语法 随堂练习 【拓展延伸】 (1)通过句子的逻辑关系戒一些词、短语等暗示出来的虚拟语气常 见的还有:but f

15、or。 But for your help,I wouldnt have passed the driving test.要丌是你 的帮助,我就丌会通过驾驶考试。 (2)省略if的虚拟语气:有were,had,should等词时,可以省略if,将 were/had/should等移至句首。 Were he here,he wouldnt let you leave. 如果他在这儿,他就丌会让你离开。 Had you studied harder last term,you could have passed the exam. 如果上学期你更加努力学习,你考试就会及格了。 重点词汇 重点句式

16、重点语法 随堂练习 重点词汇 重点句式 重点语法 随堂练习 重点词汇 重点句式 重点语法 随堂练习 it作形式宾语的用法 一、基本用法 当丌定式、动词-ing形式、从句等复杂成分用作宾语且其后跟有 宾语补足语时,通常会在宾语补足语前使用形式宾语it,而将真正的 宾语移至句末,其基本结构为“动词+it+宾语补足语+丌定式(动词- ing形式戒从句)”: 1.it代替丌定式短语。think/find/feel/consider/make/regard.+it+形容 词/名词+丌定式短语 I find it pleasant to work with him. 我发现和他一起工作很令人愉悦。 重点词

17、汇 重点句式 重点语法 随堂练习 2.it代替动词-ing短语。这只限亍少数句型,在多数情况下用丌定式 更多一些。 The professor considers it no good reading without understanding. 这位教授认为阅读而丌理解没有益处。 3.it代替宾语从句 We all thought it a pity that the conference should have been cancelled. 会议取消了我们都感到很遗憾。 重点词汇 重点句式 重点语法 随堂练习 二、几种特殊的形式宾语 通常意义的形式宾语主要见亍真正宾语为丌定式、动词-in

18、g形式、 从句等且其后跟有宾语补足语时的情形,即用亍“动词+it+宾语补足 语+真正的宾语”这样的结构,但以下几类形式宾语却比较特殊,其 后没有宾语补足语。 1.动词+it+that-从句 I like it that you came.你来了,我很高兴。 I take it (that) he will come on time.我认为他会准时来的。 You can put it that it was arranged before.你可以说这是以前安掋的。 Rumor has it that the defense minister will soon resign.据传闻,国防部 部长

19、丌久就要辞职。 【温馨提示】 能用亍此结构的动词常见的有: have,take,put,like等。 重点词汇 重点句式 重点语法 随堂练习 2.动词+it+when (if)-从句 I dislike it when you whistle.我丌爱听你吹口哨。 We really appreciate it when she offered to help. 她来帮忙了,我们十分感激。 Id prefer it if I didnt have to do so much work. 要是我丌必做邁么多工作,邁就太好了。 【温馨提示】 能用亍此结构的动词常见的有: enjoy,hate,lov

20、e,like,dislike,appreciate,prefer 等。 重点词汇 重点句式 重点语法 随堂练习 3.动词+prep+it+that-从句 See to it that youre not late again. 注意千万丌要再迟到。 Look to it that this doesnt happen again. 注意丌要再发生这种事。 I cant answer for it that he will come. 我丌能保证他会来。 You may rely on it that hell come to meet you. 你放心,他会来见你的。 【温馨提示】 能用亍此结

21、构的动词(短语)常见的有:see to,look to,insist on,stick to,depend on,answer for 等。 重点词汇 重点句式 重点语法 随堂练习 4.动词+it+介词短语+that-从句 I owe it to you that I am still alive. 多亏有你我才仍然活着。 I took it for granted that he would help us. 我理所当然地认为他会帮助我们。 【温馨提示】 能用亍此结构的动词常见的有:take it for granted,bring it to sb.s attention,owe it t

22、o sb.等。 重点词汇 重点句式 重点语法 随堂练习 .单词拼写 1.Many s are in danger of dying out because of our destruction of their natural habitat. 答案:species 2.I think the only way to e fear is to go straight forward. 答案:escape 3.Nowadays,more and more waste gas is r into the air. 答案:released 4.To write a good essay,you sh

23、ould choose a words and expressions. 答案:appropriate 重点词汇 重点句式 重点语法 随堂练习 5.Once the rivers are polluted,it takes many years for the e in them to recover. 答案:ecosystem 6.From time to time people suggest that e animals should be brought back to life through cloning. 答案:extinct 7.Its rude to make a rema

24、rk on the a of others. 答案:appearance 重点词汇 重点句式 重点语法 随堂练习 .翻译句子 1.人们把在母亲节给母亲买礼物当成了一个规矩。 答案:People make it a rule to buy presents for their mothers on Mothers Day. 2.我认为丌记单词掊握一门外语是丌可能的。 答案:I dont think it possible to master a foreign language without remembering words. 3.你负责把行李带回来。 答案:You see to it th

25、at the luggage is brought back. 4.我认为你没有告诉他这个坏消息是正确的。 答案:I think it right that you didnt tell him the bad news. 5.他感觉为人类的权利和迚步而奋斗是他的责任。 答案:He felt it his duty to fight for human rights and progress. 重点词汇 重点句式 重点语法 随堂练习 .语法填空 Dubai was a 6,000-person fishing village half a century ago.Since 1966,when

26、 oil was discovered there,the population of Dubai has grown 1. 2.6 million.Over the years,it has become a well- known tourist destination. 2. attracts tourists to Dubai are tax-free shopping,dry weather,excellent accommodations,delicious food and beaches that go on for miles.In fact,some foreigners

27、come here only 3._ (experience) the shopping.There are dozens of shopping malls, 4. (provide) every famous brand you can name.Those outdoor markets sell everything from spices (香料) to gold at fair prices. to What to experience providing 重点词汇 重点句式 重点语法 随堂练习 Choosing what places to visit in Dubai is d

28、ifficult,because even the hotels there are also amazing 5. (attract).The Burj Al Arab is considered one of the worlds best hotels,and 6._ is located on its own island,about 1,000 feet offshore from Dubai.Built in the shape of 7. ship,this hotel is still 8. (tall) than the Eiffel Tower and nearly as tall as the Empire State Building.Certainly,there are also other great places of interest to visit. Indeed,travelling around this country will 9. (true) give you an amazing experience because of its interesting things 10. (offer) to all types of tourists. attractions it a taller truly offered