Unit4Howlifebeganontheearth语言点公开课获奖课件.pptx

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,Unit 4 How Life Began on the Earth,Language points,第1页,1.No one knows exactly how the earth began,as it happened so long ago.,No one know,s,what he was saying,as,it was too hard.,仿写：没人明白他在说什么，由于那太难理解了。,as在这里表达原因,意思是“由于”,As he was ill,he needed more help.,第2页,2.However,according to a widely accepted theory,the universe began with a“Big Bang”that threw matter in all directions.,1)begin with=start with：“以开始”.,2)to begin with=to start with 可以单独使用,表达“首先;第一;起初;最初”.在句中作时间状语.,e.g.To begin/start with,I couldnt understand him at all.,第3页,in all directions.,=in every direction/directions?朝四面八方,译：The enemies ran away in all directions.,敌人到处逃窜。,拓展：,Im terrible with directions:_,a sense of direction:_,在某人指导下:_ ones direction,方向感,under,我是路痴,第4页,What it was to be e was uncertain,be to do,be to do sth.,be+doing:_ be+done:_,联想,正在,被动,(1)表达 严禁，命令,eg.You are not to smoke in this room.,Youaretobebackby10oclock.,3.What it was to be e was uncertain until between 4.5and 3.8 billion years ago when the dust settled into a solid globe.,第5页,(2)表达注定要,All these things are to be answered for,（偿还）,.,（3）表达“将”、“计划”、“安排”。(意思靠近于begoingto)如：,.Thestudents,aretomeet,attheschoolgatetomorrow.,（4）应当 should,You are to look after the little children,第6页,.be to do:,You _this to the police.,你应当报警,They _next month.,他们计划于下个月结婚。,2.The professor _a lecture at Wuhan University next weekend.,give B.gives,C.is to give D.being given,are to report,are to be married,第7页,What it was to be e was uncertain until,他昨天直到七点才离开学校,.,He,didnt,leave school,until,seven oclock.,他们到了中国才能看了长城,.,They,couldnt,see the Great Wall,until,they came to China.,It was not until,they came to China,that,they could see the Great Wall.,Notuntil,直到,才,It is/was not until that,强调,句,It was not until,seven oclock,that,he left school,.,第8页,【巧应用】使大家惊奇是他竟没有参与会议。,_ _ _ _ _he didnt e to the meeting.,答案：What surprised everybody is that,【精提取】What it was to be e是what引导主语从句，,what在从句中作be e宾语。,第9页,1._（使大家吃惊是）is that he didnt e to the meeting.,What surprised everybody,2._,（他所做）,added to our,difficulty.,What he did,第10页,4.The earth became so violent that it was not clear whether the solid shape would last or not.,地球开始变得剧烈动乱，不懂得这个固体形状与否会继续下去。,n.固体 (solid,liquid,gas),adj.固体,结实,solid,:,第11页,cool down 变凉,冷却,平息，冷静,晒了一天太阳之后,他喜欢在海水中凉爽一下.,After a day in the sun,he liked to _,in the sea.,他话平息了她怒气.,His words _ her anger.,cooled down,cool down,6.What is even more important is that,as the earth,cooled down,water began to,appear,on its surface.,第12页,appear“出现,似乎”是不及物动词当表达“似乎,仿佛”时是系动词,该词无被动语态。,Our teacher appeared on TV this morning.,第13页,7.Water had also appeared on other planets like Mars but,unlike,the earth,it had disappeared later.,unlike,prep.,dislike,v.,likely,adj.,unlikely,adj.,第14页,8.It was not immediately obvious that water was to be fundamental to the development of life.,水会对于生命发展起关键作用,这一点在当时并不太明显.,第15页,allow to do=permit to do,harmful adj.,harmless,harm n./v.,be harmful,to,sb./sth.,=do harm,to,sb./sth.=,do sb/sth harm,对,有害,9.,What many scientists believe,is that the continued presence of water,allowed,the earth to,dissolve harmful,gases and,acids,into the oceans and seas.,第16页,过多二氧化碳对环境有害,.,Too much carbon dioxide,is,the environment.,harmful to,does harm to,第17页,10.This produced a chain reaction,which made it possible for life to develop.,chain reaction 连锁反应,Make it possible for life to develop.,使生命发展成为也许,make it+adj./n.+.to do sth.,make,/,find,/,feel,/,think,/,consider,that,从句,第18页,组长让我们可以一起合作.,The group leader_,老师让他们轻易地明白那个问题.,The teacher _.,made it possible for us to work together,.,made it easy for them to understand,the question,第19页,1)multiply v.乘:增长,繁殖；,7,乘以,4,等于,28.,4,multiplied by,7 is twenty-eight.,我们功课自上高中以来增多了,.,Our homework,have multiplied,since we came to high school.,蚊子在夏天繁殖得很快,.,Mosquitoes,multiply,rapidly in summer.,11.They,multiplied,and filled the oceans and seas with oxygen,which encouraged,第20页,all sorts of=all kinds of 多种各样,12.which,encouraged,the later development of early shellfish and,all sorts of,fish.,第21页,13.Others,called amphibians,were able to live on land as well as in the water.,此外某些叫作两栖动物,它们既能在活水里生存也能在陆地上生.,A as well as B表达“(除B之外)A也;既B又A”.如:,Im learning French as well as English.,我学英语之外还学法语.,第22页,He grows flowers as well as vegetables.,他既种菜也种花.,“就远原则”：,He as well as I _(like)rock music.,likes,第23页,15.They produced young generally by laying eggs.,它们一般是通过孵蛋而繁衍后裔.,lie,lie,lay 辨别如下:,动词原形,第三人称单数,过去式,过去分词,现在分词,汉字释义,lie,lie,s,撒谎,;,谎话,lie,lie,s,躺,;,位于,lay,lay,s,放置,;,下蛋,lie,d,lie,d,lying,lay,lain,lying,laid,laid,laying,第24页,（,1,）,vi.,（消息等）传开，流传,。如：,The news,spread,through the school very quickly.,The fire,spread,from the factory to the house nearby.,18.small clever animals,now with hands and feet,appeared and,spread,all over the earth.,第25页,（,2,）,v.,“,使伸展，延伸，张开,”,，常与,out,连用,。,He spreaded out his arms to wel e us.,他张开手臂欢迎我们。,第26页,19.Thus they have,in their turn,be e the most important animals on the planets thus adv.因此；从而,She studied hard,_ .,thus,she got high marks,2)In ones turn,轮到某人,It will be,_,to be on duty,tomorrow.,in Sams turn,第27页,20.They are putting too much carbon dioxide into the atmosphere,which,prevents,heat,from,escaping from the earth into space.,制止某人做某事:,prevent sb.,(from),doing sth.,stop sb.,(from),doing sth.,keep sb.,from,doing sth.,注意：,keep sb.from doing sth.,中,from,不可省略,被动,语态中,他们中,from,都不可省,。,第28页,1)We must prevent them from making trouble.,2)You should prevent the child from injuring himself.,第29页,21.Whether life will continue on the earth for millions Of years to e will depend on whether this problem can be solved.,depend on:依赖，依托,depend on sb.依托,相信某人,depend on sth.取决与某物,第30页,我们都靠你来做决定了,Well all _to make a decision.,明天与否能开校运会取决与天气,Whether to hold the sports meeting or not will _.,depend on you,depend on the weather,第31页,单词拼写,1.There is too much _(暴力)on TV.,2.With the d _ of economy,peoples living standards are higher now.,3.Every night he observes the space through a t_.,4.The illness is s_ through the village.,5.One cannot e_ without air.,6.You will _(逐渐地)get used to the weather here.,7.By the time they reached the top of the mountain,they were _(精疲力尽).,8.There is a big underground railway _(系统)in London,which is good for travelers.,9.Zhang Heng was one of the most famous Chinese,a_ in the world.,10.The mammals _(繁殖)when the animals,harmful to them,disappeared.,第32页,.短语运用,in all directions,go by,give birth to,in,time,depend on,prevent.from,as well as,be different from，escape from，watch.,doing,masses of,because of,1.Whether life will continue on the earth,for millions of years to e will _,whether this problem can be solved.,2.If you put your heart into it，youll,succeed _.,depend on,in time,第33页,3.There were _ people in the shops,yesterday.,4.Nothing can _ their plans _ being,carried out.,5.We _ the sun _ behind the trees,and the evening fell.,6.Our sons are very _ each other.,7.We spent three hours waiting in the rain,_ you!,8.As time _,I began to realize what I,did was wrong.,masses of,prevent,from,watched,setting,different from,because of,went by,第34页,Homework,1.完毕书本P28 练习1至练习3。,2.书本P98 单词multiply 至gentle 三加一。,第35页,