Unit 5　Section B　Using language同步（ppt课件） (共39张PPT)-2022新外研版（2019）《高中英语》选择性必修第二册.pptx

1、Section BUsing 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.dissolvenutrientwormspeciesissue避难所围住的,封闭的释放捕食,掠夺 分解者重点短语1.由于 2.依靠;依赖 3.也;和 4.(机器等)出故障;破裂 5.吸收;领会 6.对负责 7.有助于,捐献 due torely onas well asbreak downtake

2、inbe responsible forcontribute to8.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 medals.2.I find difficult to do the job well.3.I thin

3、k best that you should stay here.4.We think no use complaining.Itititit.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.She thinks it her duty to help us.3.I think it my honour to be invit

4、ed 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】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

5、 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全神贯注于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

6、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 difficulties.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.不能指望他说真话。重点词汇重点句式重点语法随堂练习【词汇拓展】rely on sb.

7、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 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不愿读报纸。You may rely on it that she wont be late.你尽管

8、放心,她不会迟到的。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)【词汇精讲】break down(机器)出故障;(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

9、的电脑出故障了,所以他无法上交作业。She was not herself.She broke down.她身体不舒服,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(战争、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

10、America shortly before the war broke out in 1939.1939年战争爆发前不久他们逃到了美国。Scientists think they are beginning to break through in the fight against cancer.科学家认为他们在对抗癌症的战争中开始有所突破。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 pol

11、ice 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.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,他依然不能理解。He was homeless,so we to

12、ok 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】take 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(时间或空间);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,

13、汽车代替了马。We eventually took off at 10:00 and attended the meeting in time.我们终于于十点起飞,及时地参加了会议。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.如果世界上没有战争,人们会生活得更幸福

14、。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或一些词、短语等暗示出来的虚拟语气常见的还有:but for。But for your help,I wouldnt have passed the driving test.要不是你的帮助,我就不会通过驾驶考试。(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,他就不会让你离开。Had you studied harder last term,you could

15、 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、基本用法当不定式、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+不定式(动词-ing形式或从句)”:1.it代替不定式短语。think/find/feel/consider/make/regard.+it+形容词/名词+不定式短语I find it pleasant to

16、work with him.我发现和他一起工作很令人愉悦。重点词汇重点句式重点语法随堂练习2.it代替动词-ing短语。这只限于少数句型,在多数情况下用不定式更多一些。The professor considers it no good reading without understanding.这位教授认为阅读而不理解没有益处。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

17、见于真正宾语为不定式、动词-ing形式、从句等且其后跟有宾语补足语时的情形,即用于“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排的。Rumor has it that the defense minister will soon resign.据传闻,

18、国防部部长不久就要辞职。【温馨提示】能用于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.我不爱听你吹口哨。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.要是我不必做那么多工作,那就太好了。【温馨提示】能用于此结构的动词常见的有:enjoy,hate,love,like,disli

19、ke,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.注意千万不要再迟到。Look to it that this doesnt happen again.注意不要再发生这种事。I cant answer for it that he will come.我不能保证他会来。You may rely on it that hell come to meet you.你放心,他会来见你的。【温馨提示】能用于此结构的动词(短语)常见的有:see to,look to

20、,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】能用于此结构的动词常见的有:take it for granted,bring it to sb.s attention,owe it to 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 a

21、re in danger of dying out because of our destruction of their natural habitat.答案:species2.I think the only way to e fear is to go straight forward.答案:escape3.Nowadays,more and more waste gas is r into the air.答案:released4.To write a good essay,you should choose a words and expressions.答案:appropriate

22、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:extinct7.Its rude to make a remark 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

23、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.我认为不记单词掌握一门外语是不可能的。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 that 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

24、 that you didnt tell him the bad news.5.他感觉为人类的权利和进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 oil was discovered there,the population of Dubai has grown 1.2.6 million.Over t

25、he 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 come here only 3._(experience)the shopping.There are dozens of shopping malls,4.(pro

26、vide)every famous brand you can name.Those outdoor markets sell everything from spices(香料)to gold at fair prices.toWhatto experienceproviding重点词汇重点句式重点语法随堂练习 Choosing what places to visit in Dubai is difficult,because even the hotels there are also amazing 5.(attract).The Burj Al Arab is considered

27、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.attractionsitatallertrulyoffered