高一必修三unit4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,*,*,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,*,*,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,*,*,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,*,*,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,*,*,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,*,*,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,*,*,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,*,*,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,*,*,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,*,*,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,*,*,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,*,*,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,*,*,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,*,*,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,*,*,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,*,*,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,*,*,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,*,*,英语,必修,3(,人教版,),Reading,一,1,From Paragraph 1 we can know that stars are created from_,A,air,B,atoms,C,rocks,D,ice,B,一、根据课文“How life began on the earth，选择正确答案。,2What does the word“they refer to in the sentences“It exploded loudly with fire and rock.They were in time to produce carbon,nitrogen，water vapour and.in Paragraph 2,APlanets.BStars.,CGases.DFire and rock.,D,3Which is the right order of the development of life,ASmall clever animalsshellfishdinosaursmammals.,BShellfishdinosaurssmall clever animalsmammals.,CShellfishdinosaursmammalssmall clever animals.,DDinosaursshellfishmammalssmall clever animals.,C,4Why were mammals different from other life forms,AThey gave birth to young baby animals and produced milk to feed them.,BThey produced young generally by laying eggs.,CThey were able to live on land as well as in the water.,DThey live on grass.,A,5What problem is caused by human beings,AThey exist everywhere on the earth.,BThey cause global warming.,CThey find new methods of growing crops.,DThey enjoy hunting and fishing.,B,四、短文填空。,No one knows exactly 1._the earth began.According to a widely accepted theory,the earth began with a“Big Bang,2._exploded loudly and produced water vapour and many gases,3._(make)the earths atmosphere.As the earth cooled down,water appeared and stayed 4._the surface.It was the presence of water 5._allowed the earth to dissolve harmful gases and acids into the oceans and seas,which made 6._possible for life to develop.First,the appearance of small plants encouraged the development of early shellfish and all sorts of fish.Next,green plants began to grow on land.7._were followed by land animals.So reptiles appeared for the first time.Later,dinosaurs developed.8._，they suddenly disappeared.After that,mammals came into being.Finally,humans appeared and spread all over the earth.However,they are putting too much carbon dioxide into the atmosphere,making the earth too hot 9._(live)on.So whether life will continue on the earth will depend on 10._this problem can be solved.,how,which,making,on,that,it,They,However,to live,whether,单词,默写,根据所给英文解释写出以下单词。,1_：very strong and sudden.,2_：to make sb.feel confused because they do not understand sth.,3_：to be present in a place or situation.,4_：causing harm.,5_：an idea or opinion.,violent,puzzle,exist,harmful,theory,1However，according to a widely accepted theory，the universe began with a“Big Bang that threw matter in all directions.(p.25),然而，一种普遍为人们所承受的理论是：宇宙起源于一次大爆炸，这次大爆炸将物质投射到四面八方。,language points,词语链接,begin withstart with 以开场；由作为开头,to begin with 首先，第一点,即学即练,选用上述词语完成以下句子。,(1)The proceedings will_a speech to welcome the guests.,(2)The party _ a song.,(3)_，we must consider the problem all sidedly.,begin with,began with,To begin with,2,They were,in time,to produce carbon dioxide,，,nitrogen,，,water vapour and other gases.(p.25),它们最终产生了二氧化碳、氮、水蒸气和其他气体。,词语链接,in time,及时；终于；迟早,at one time,曾经,，,一度,at times,有时,，,间或,at a time,一次,，,依次,in no time,几乎,，,马上地,，,立刻,on time,准时；曾经,ahead of time,提前,for the time being,暂时,from time to time,不时地,at the same time,同时,，,但是,即学即练,用上述短语完成以下句子。,(1)They sent the mail to me just_，before I left.,(2)William arrived at the theatre just_for the play was to be on.,(3)Hurry up!The concert will,begin_,in time,in no time,in time,(4)_will I give up.,(5)The boy laughed and cried_.,(6)_he was addicted to playing web games,but now he devotes himself to writing,which delights his parents.,At no time,at the same time,At one time,(7)Dont try to do everything at once,take it a bit_,(8)Youll have your own office soon,but_youll have to share one with me.,(9)Were determined that the work shall be finished_(,提前,),at a time,for the time being,ahead of time,3,Water had also appeared on other planets like Mars but,unlike,the earth,，,it had disappeared later.(p.26)水也出现在像火星那样的其他行星上，但和地球不同，其他行星上的水后来都消失了。,即学即练,根据句子的意思在括号里填入适当的词。,(1)A good hotel manager should know his regular guests likes and_,(2)Her latest novel is quite_her earlier work.,(3)If you go on like that youll get yourself_(like),(4)I was very interested in the lecture,，,_many of the students.,dislikes,unlike,disliked,unlike,4,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.(p.26),许多科学家认为水的长期存在使地球得以把有害的气体和酸溶解在海洋里。,词语链接,harm,ful adj,.,有害的,，,伤害的,harm,v.&n.,伤害,harm,ful,ly,adv.,伤害地,harm,less,adj.,无害的harm,less,ly,adv.,无害地,be harmful to,对,有害,do harm to,对,有害,do sb.harm,对某人有害,come to harm,受到损害,come to no harm,未受到伤害,即学即练,选用上述词语完成以下句子。,(1)Its_to your eyes to read in the bus.,(2)Drunkenness(醉酒)_our health.,(3)Nuclear power(核能)will_our health and safety if improperly used.,(4)They had done their best to_ _(防止小孩们受到任何伤害),harmful,is harmful to,do harm to,prevent children from any harm,5,They produced young generally by,laying,eggs,.(p.26),它们通常是通过孵蛋来繁殖后代的。,lay vt.(laid,laid,laying),把放下；摆设；铺,(,地毯,),；产,(,蛋,),词语链接,lay eggs,下蛋,lay sth.aside,把某物放在一边；积蓄,(,钱,),lay sth.down,把某物放下,lay the blame on sb.,责备某人,lay the table,摆桌子,lay emphasis/stress on sth.,把重点放在某事上,即学即练,根据句子的意思在括号里填入适当的词语。,(1)The bird_its eggs in other birds nests.,(2)he is a political leader that_(,非常强调,)individual responsibility.,(3)He_some money_for rainy days.,lays,lays great stress on,lays aside,6,They laid eggs too and,existed,on the earth for more than 140 million years.(p.26),它们也生蛋，在地球上生存了,1.4,亿年。,词语链接,exist vi.存在；生存,existence n存在,exist介词.存在于地方,exist on sth.靠某物生存,Does life exist on Mars 火星上有生命吗？,I can hardly exist on the wage Im getting.,我靠我挣的工资简直难以糊口。,即学即练,用exist的短语或其适当形式填空。,(1)This plant_only_Australia.,(2)Can you_such a low salary,(3)I doubt the_(exist)of alien.,exists in,exist on to,existence,7,Thus they have,，,in their turn,，,become the most important animals on the planet.(p.26),于是，他们接着成为这个行星上最重要的动物。,in ones turn 轮到某人；接着,in turn 轮流；一个接着一个,by turns 轮流；一阵一阵,take turns(to do sth.)轮流(做某事),Its ones turn to do sth.轮到某人做某事了,Its your turn to clean the classroom.,轮到你清扫教室了。,词语链接,即学即练,用上述短语完成以下句子。,(1)She went hot and cold_,(2)In our class，each students recitation comes_(轮流),(3)They，_，made a proposal.,(4)Each of you must_(依次发言),by turns,by turns/in turn,in their turn,take turns to make a speech,8How life began on earth is one of the biggest puzzles that scientists found hard to solve.(p.27),生命到底是如何开场的是科学家们觉得最难解决的难题之一。,词语链接,puzzle,n,难题,v,迷惑,puzzlement,n,迷惑,puzzled,adj.,感到困惑的,puzzling,adj.,使迷惑的,be puzzled about,对,感到疑惑,即学即练,选用上述词语完成以下句子。,(1)To explain the_findings,he offers two theories.,(2)I_that I havent heard from Tom for so long.,(3)She listened with a_ expression on her face.,(4)No one has yet succeeded in explaining the_of how life began.,puzzling,am puzzled,puzzle,puzzled,was puzzled,What puzzles me,此句为,主从复合句,。主语为,主语从句,，从句由连词,whether,引导，不定式,to come,作,years,的定语。,whether this problem can be solved,是,depend on,的宾语从句。,即学即练,将以下句子译成英语，并分析其构造。,(1)使我兴奋的是，父亲给我买了一辆单车。,_,(2),我是否离开这家公司去深圳取决于老板怎样对我。,_,_,