英语一轮复习名师教学课件Unit4《Astronomythescienceofthestars》(新人教版必修3)

* * 话题：科普知识常用词汇：science 科学scientist 科学家technology 技术engineer 工程师astronaut宇航员astronomer 天文学家breakthrough突破project项目capsule太空舱manned spaceship/spacecraft载人飞船space shuttle航天飞机unmanned spaceship/spacecraft无人飞船circling the moon绕月landing on the moon登月return to Earth返回地球weather satellite气象卫星communication satellite通信卫星carry out scientific experiments 开展科学实验with all the information available 有所有的可用信息invent a folding wheel 发明可折叠的轮子have access to space travel 能到太空旅游apply basic technology to daily life 将基础科技运用到日常生活中范例：Is there life on Mars? We don't know.Can we land on Mars? It all depends on the development of science and technology.Man has known a little about Mars.There is almost no oxygen on Mars.It might be about 50 degrees above zero at noon and 100 degrees below zero at night, which prevents us from living there.Now that Mars are quite different from our earth, if we are to go to Mars one day, we should have to take along our own oxygen, food and clothing.But it is certain that with the development of science man will land on Mars in time.一、单词识记根据词意写出单词的汉语意思或写英文单词。

1．不同；不像 prep.________________2．有害的 adj.______________3．连锁；锁链 n．______________4．存在；生存 vi.________________5．因此；于是 adv.________________6．使迷惑；使为难vt.；谜；难题n.______________ 7．气候n.______________8．生物学家n.______________9．温和的；文雅的adj.______________10．物理学家n.______________unlikeharmfulchainexistthuspuzzleclimatebiologistgentlephysicist11．astronomy n．______________12．atom n．______________13．carbon n．______________14．acid n．______________15．fundamental adj.______________16．multiply v．______________17．oxygen n．______________18．dioxide n．______________19．gravity n．______________20．satellite n．______________天文学原子碳酸基本的；基础的乘；增加氧二氧化物重力，万有引力卫星；人造卫星二、词汇拓展用括号内所给词的适当形式填空。

1．If we interfere 干涉 , it may do more ________ than good. harmful 2．He fell ________ in love with her. violent3．She is good at dancing; she is a ________ dancer. birth4．Some students were doing a ________ experiment in the lab with the help of their teacher. biology5．I was unaware of his ________ until now. existharmviolentlybornbiologicalexistence三、词组互译将下列词组译成中文或英语。

1．密切注视；当心______________2．突发；爆发______________3．既然______________4．感到高兴/振奋______________5．阻止；制止______________6．轮到某人；接替______________7．产生；分娩______________8．下蛋______________9．及时；终于______________10．挡住光线 ______________watch outbreak outnow thatcheer upprevent…from…in one's turngive birth tolay eggsin timeblock out11．think of…as______________12．combine into…______________13．cool down______________14．get the hang of ______________15．be different from…______________ 16．spread all over the earth ______________ 17．go by______________18．make a trip ______________19．be off______________20．rise into the air______________把……看作是合成……冷却熟悉；理解；掌握与……不同遍布全世界过去，推移去旅行启程升入太空四、单元重点句子填空根据句子结构或语法要求填空。

1．We usually think of science subjects ________ physics, chemistry, biology, geology and mathematics.2．What are the most important skills we need ________ be real scientists?3．________it was to become was a mystery ________the dust began to slowly combine into a ball ________ move around the sun.4．It exploded loudly ________ fire and rock，________ were in time to produce the water vapour, carbon dioxide, oxygen, nitrogen and other gases, ________ were to make the earth's atmosphere.asto beWhatuntilmovingwithwhichwhich5．It allowed the earth ___________ dissolve harmful gases，________ had become part of the earth's atmosphere, into the oceans and seas.6．Scientists believe that taking carbon dioxide ________ the atmosphere and ________ fill the air ________ oxygen helped life to develop.7．Last month I was ________ luck enough to have a chance ________ make a trip into space with my friend Li Yanping, an astronomer.8．I cheered ________ immediately and floated weightlessly around in our spaceship cabin ________ watch the earth become________ small and the moon larger.to dissolvewhichfromfillingwithluckyto makeupwatchingsmaller9．Walking does need a bit of practice ________ that gravity has changed.10．We watched，________ amaze as fire broke out on the outside of the spaceship ________ the earth's gravity increased.nowamazedas五、课文内容理解根据课文内容，请用适当的词或短语的正确形式填空。

As the result of “Big Bang”， the violent earth slowly settled into a 1.________ moving around the sun.The gasses which were to make the earth's 2.___________came into being from the 3.________ of the dust ball, with water following them while the earth 4.________ down.It allowed the beginning for lions of years later, the first extremely small plants began to appear on the 5.________ of the water, 6.____________ and filling the sea and oceans, which encouraged the later development ofearly shellfish and all sorts of fish.As time passed, green plants taking 7.____________ and producingglobeatmosphereexplosioncooledsurfacemultiplyingcarbon dioxide8.________came to land and grew into ter the 9.________ of lives continued, such as insects, amphibians, reptiles, dinosaurs and 10.________， the typical of which is human being.They don't only do good to the earth but cause damage to it.oxygenchainsmammals六、单元语法复习翻译下面句子或用适当的连词填空。