高中英语(人教版)必修三Unit4Astronomy--the-science-of-the-starsPeriod1Reading-and-Comprehendingppt课件

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,*,Reading and Comprehending,2019,学年度人教版必修三,Unit4Astronomy-the science of the stars Period1,Reading and Comprehending2019学,Para.1 A.The formation of the earth.,Para.2 B.The importance of water for life.,Para.3 C.A widely accepted theory about,the formation of the universe.,Para.4 D.The arrival of humans and their,impact on the earth.,Para.5 E.The development of plants and,animals on the earth.,一、匹配段意,1-C,，,2-A,，,3-B,，,4-E,，,5-D,Para.1 A.The formation,二、选择答案,根据课文内容选择最佳选项。,1.Who knows how life began on the earth exactly?,A.Scientists.B.Astronomers.,C.No one.D.Aliens(,外星人,).,2.What does“small clever animals”in the last paragraph refer to?,A.Insects.B.Reptiles.,C.Dinosaurs.D.Humans.,C.No one.,D.Humans.,二、选择答案 根据课文内容选择最佳选项。C.No one,3.The earth was different from the other planets in that_.,A.a cloud of dust was around the earth,B.comfortable climate remained on the earth,C.water remained on the earth,D.carbon remained on the earth,C.water remained on the earth,3.The earth was different from,4.The plants grew before the animals because they provide_.,A.nutrients for animals to absorb(,吸收,),B.oxygen for animals to breathe,C.necessary temperature for animals to keep warm,D.water vapor for animals,D.water vapor for animals,4.The plants grew before the a,5.Which of the following statements is true?,A.The dust settled into a solid globe between 4.5 and 3.6 billion year ago.,B.The first small plants began to appear on the surface of the land.,C.About 2.6 million years ago some small clever animals appeared and spread in the ocean.,D.Dinosaurs died out long before human beings developed on the earth.,D.Dinosaurs died out long before human beings developed on the earth.,5.Which of the following state,Time,What happened,Big Bang,1._ began to form and combine to create stars and other bodies.,Between 4.5 and 3.8 billion years ago,Dust settled into a solid and 2_.globe.,The earth exploded to produce its 3._.,The continued 4_.of water allowed the earth to dissolve harmful gases and 5_.into the oceans and seas.,三、文脉梳理,根据课文内容完成表格。,Atoms,violent,atmosphere,presence,acids,TimeWhat happenedBig Bang1._,Many millions of years later,The first small plants on the surface of the water produced 6._.,Early 7._ and all sorts of fish appeared.,Green plants began to grow on land.,Insects and 8._ appeared.,9._ appeared and they laid eggs.,Dinosaurs developed,，,laid eggs and 10._,for more than 140 million years.,Mammals rose and 11._ babies.,oxygen,shellfish,amphibians,Reptiles,existed,gave birth to,Many millions of years laterT,About 2.6 million years ago,Some small 12._ animals with hands and feet appeared and spread all over the earth.,Now,Humans produce too much carbon 13._,making the earth too hot.,dioxide,clever,About 2.6 million years agoSo,四、课文复述,朗读课文并在下面课文复述中填入适当的词使复述完整，然后大声用自己的语言复述下文。,After the“1_”,the earth was just a cloud of 2_,which later exploded,producing carbon,nitrogen,water 3_ and other gases.A chain reaction among them made it possible for life to develop.Then small plants appeared and they filled the oceans and seas with 4_,which encouraged the later development of early 5_and all sorts of fish.,Big Bang,dust,vapor,oxygen,shellfish,四、课文复述 朗读课文并在下面课文复述中填入适当的词使复,When the plants grew into forests,6_ such as dinosaurs appeared.After dinosaurs disappeared,7_ became more important.Small clever animals with hands and 8_ appeared and 9_ all over the world.But they are making the earth too10 _ for life to live on.,reptiles,mammals,feet,spread,hot,When the plants grew into fore,五、话题议写,讨论下列问题，然后根据要求写一篇主题相关的英语作文。,议一议,(discussion),1.Since human beings have been on the earth thousands of years,why is the earth so important for our human beings?,There is no doubt that the earth is important to us human beings.It provides us with natural resources that we need.So far we havent found any other planet which is available for us to live on.However,we dont really treasure our only home and we are facing serious problems.,五、话题议写 讨论下列问题，然后根据要求写一篇主题相关的英,2.What problems or impacts have caused by human beings?,One problem is the green-house effect.Due to the effect,the earth is becoming too hot for us to live on.Another one is the serious pollutions,especially air pollution and water pollution.Fuel consumption has had air polluted and industrialization has made many rivers and oceans dirty so that we are facing the lack of fresh air and water.Meanwhile,the amount of natural resources we can use is decreasing.,2.What problems or impacts ha,3.How can we protect the earth and make it a better place to live on?,The earth is our home and we have the duty to take good care of it for ourselves and for our future generations.Therefore,we should make every effort to save resources and limit the impact of human activities on the planet.,3.How can we protect the eart,写一写,(writing),写作内容,1.,以约,30,个词概括课文的主要内容。,2.,然后，以约,120,个词就“地球”的主题发表看法，内容包括：,(1),地球对人类的重要性；,(2),人类给地球和人类生存造成的负面影响；,(3),我们应如何爱护地球和保护环境。,写一写(writing),This p