英语课件：人教版必修三Unit4SectionⅢ.ppt

Section Learning about Language & Using Language,重点难点探究,速效提能演练,预习多维感知,Section ,预习多维感知,.Read the passage and choose the best answer. 1The passage mainly talks about _. Awhat the moon is Bmy visit to the moon Cthe differences between the earth and the moon DLi Yanping，my friend，who is an astronaut,2When we were going up，we felt _. Awe were pressed against our seats Bwe were lighter than we are on the earth Cas if we were flying Dthe rocket was shaking strongly,3Why cant the spaceship fall back to the earth? ABecause the moons gravity pulls it up. BBecause it is too far away from the earth. CBecause the earth has no gravity. DBecause the spaceship is not very heavy.,4When I was on the moon I felt I was _ than I am on the earth. Aslower Bheavier Ccleverer Dlighter 5If a baby is growing on the moon，when he grows up，he will grow _ than he is on the earth. Ataller Bshorter Cfatter DThinner 答案：15.BABDA,.Read the text(P3031)carefully and fill in the blanks.,答案：1.pushed back 2.pull 3.weight 4.the moons gravity 5.less 6.twice 7.practice 8.painful 9.frightening 10.increased,1As a result of this event，a great dust cloud formed in the sky blocking out the sunlight. 由于这一事件，一团巨大的尘埃在空中形成，并挡住了阳光。,重点难点探究,品味经典 Black clouds blocked out the sun. 乌云遮住了太阳。,Police blocked out the street after the explosion. 在爆炸发生之后，警方用路障封锁了那条路。 Over the years she had tried to block out that part of her life. 多年来，她努力想把生命中的那段经历从记忆中抹去。 自我探究 block out挡住(光线)；堵住；忘掉。,归纳拓展 block n.大块；(木、石等)块；街区；路障 vt.阻塞；阻挡, block off 封闭；封锁, block up 阻挡；堵塞,牛刀小试 完成句子 As the only entrance to the valley _(被阻塞)by fallen rocks，we couldnt gain access to the village to rescue the trapped people. 答案：was blocked,2Other scientists believe that a comet crashed into the earth long ago and caused the disappearance. 其他的科学家们相信很久以前一颗彗星撞到地球上，这导致了恐龙的消失。 品味经典 The plane crashed in the mountains. 那架飞机在山中坠毁了。 How did you crash my car? 你是怎样撞到我的车的？,Forty one people were killed in a plane crash last week. 上周的飞机失事中有41人丧生。 The tree fell with a great crash. 那棵树哗啦一声倒了下来。 自我探究 crash vi.& vt.碰撞；坠落 n碰撞；坠落；坠落声，撞击声。,归纳拓展 crash into (发出很响的声音)冲入，撞入 牛刀小试 完成句子 He was afraid that their truck would be out of control and _ (碰撞公共汽车的后部) 答案：crash into the back of a bus,3I cheered up immediately and floated weightlessly around in our spaceship cabin watching the earth become smaller and the moon larger. 我立刻感到很高兴，由于失重我在太空舱里飘来飘去，我望着(身后的)地球越来越小，而(前方的)的月球越来越大。,品味经典 He cheered up at the news. 他听到这消息就高兴起来。 Cheer up! The result isnt too bad. 振作起来吧！这结果还不算太坏。 I wrote that song just to cheer myself up. 我写那首歌只是为了让自己高兴。 The good news cheered (up) everybody who heard it. 喜讯使每一个听到的人都感到高兴。,自我探究 cheer up感到高兴；感到振奋；(使)高兴；使振奋。,归纳拓展 (1)cheer sb.on (比赛中)以喝彩声鼓励；为某人加油 cheer vt.& vi. (为)欢呼，喝彩；鼓舞 cheer the victory 为胜利而欢呼 (2)cheerful adj.快乐的，高兴的 Cheers! (用于祝酒)干怀！,【助记】,牛刀小试 完成句子 (1)每个人皆为这个令人兴奋的消息而高兴并且欢呼起来。 Everyone _ by the _ news and _. (2)我带她出来以便让她高兴起来。 I took her out _. 答案：(1)was cheered；cheering；cheered up,4We watched，amazed as fire broke out on the outside of the spaceship as the earths gravity increased. 我们惊奇地看着，随着地球引力的增加，宇宙飞船的外层摩擦起火。 品味经典 A fire broke out in his house last night. 昨晚他家起火了。,The Second World War broke out in September,1939. 第二次世界大战是1939年9月爆发的。 A quarrel broke out suddenly at midnight. 半夜，突然有人吵起来。 自我探究 break out(战争、火灾、疾病、争吵等)突然发生；爆发。,归纳拓展 break away (from) 摆脱；脱离 break down (机器)出故障；破坏；(谈判、希望、计划等)失败，破裂；(化学)分解；(身体)垮掉 break in 闯入；打断 break into 闯入；突然发作起来 break off (使)断开；中断；折断 break ones word/promise 食言；失信 break through 突破；突围 break up 解散，驱散；击碎，粉碎；(关系)毁坏，结束；放假,To understand the grammar of the sentence，you must break it down into parts. 为了理解这个句子的语法，你必须把它分解成几小部分。 The police broke up the crowd (the meeting) 警察驱散了人群(集会)。 Lets break off (work) and have some tea. 让我们(把工作)停一会，喝点茶。,牛刀小试 (1)Im surprised to hear that Sue and Paul _ (已经分手了) So am IThey seemed very happy together when I last saw them. (2)(2011年九江高一检测改编)The football team _(解散了)，because the boss lacked money.,(3)发生在6个月以前的利比亚危机已快结束了。 The Libya crisis that _ six months ago _. 答案：(1)have broken up (2)had to break up (3)broke out；is drawing to an end,5Watch out for.小心他要用咖啡来解愁。 品味经典 Watch out! Theres a car coming. 注意！有辆车开过来了。 Watch out for a tall man in a black hat. 注意带黑帽子的高个子男人。 You have to watch out for fast traffic along here. 得当心这里快速的车流。,The government reminds people to watch out for the continuous rain in May. 政府提醒人们注意五月份的连续降雨。 自我探究 watch out密切注视；当心；提防。look/watch out后须加for才能接宾语，意为“当心”。,牛刀小试 完成句子 (2011年宜宾高一检测改编)The officer ordered the policeman to _(密切注意) that tall man in a black suit.He thought the man might be the murderer wanted. 答案：watch out for,6When we get closer to the moon，we shall feel its gravity pulling us，but it will not be as strong a pull as the earths. 当更接近月球时，我们就会感到月球的引力在拉我们，但是，月球的引力不像地球的引力那么大。,品味经典 She is as good a teacher as her mother. 她和她妈妈一样是位好老师。 自我探究 as strong a pull as the earths是as.as.结构的一种变形。as.as.意为“像一样”，其中第一个as是副词，第二个as是连词。在否定句中，第一个as可改为so。,归纳拓展 His bedroom is not as neat as his elder sisters. 他的卧室没有他姐姐的整洁。 Youve made as many mistakes as I have. 你犯的错误和我犯的错误一样多。,牛刀小试 选用词组完成句子 (1)John is the tallest boy in the class，_ five feet eight inches according to himself. (2)After supper she would sit down by the fire，sometimes for _ an hour，thinking of her young and happy days.,(3)How far apart do they live? _ I know，they live in the same neighbourhood. (4)_ I know the money is safe，I shall not worry about it. (5)_ Im concerned，you can do whatever you like. 答案：(1)as tall as (2)as long as (3)As far as (4)As long as (5)As far as,7But when I tried to step forward，I found I was carried twice as far as on the earth and fell over.但是当我试着向前迈步的时候，我发觉我被送出去的跨度竟是在地球上的两倍，因而我摔倒了。 自我探究 twice as far as表示“是的两倍远”，是倍数比较的具体表示形式。,归纳拓展 常见的倍数比较的表达方式有以下几种： 倍数as形容词(或副词)原级as 倍数形容词(或副词)比较级than 倍数the名词(表示量度)of,His apartment is three times as large as mine. 他的公寓是我的公寓的三倍大。 The girl is ten times cleverer than her brother. 这个女孩比她哥哥聪明十倍。 The earth is 49 times the size of the moon. 地球的大小是月球大小的49倍。,牛刀小试 翻译句子 (1)地球大概是月亮的四十九倍大。 _ (2)线段A是线段B的两倍。 _,答案：(1)The earth is about 48 times bigger than the moon. The earth is about 49 times as big as the moon. The earth is about 49 times the size of the moon. (2)Line A is twice as long as Line B. Line A is twice the length of Line B.,完成句子 (3)(2011年高考陕西卷改编)正在为下届亚运会而建设的新体育场将是目前这个体育场的三倍。 The new stadium being built for the next Asian Games _ the present one. 答案：will be three times as big as,译文助读 A VISIT TO THE MOON Last month I was lucky enough to have a chance to make a trip into space with my friend Li Yanping，an astronomer.We visited the moon in our spaceship! Before we left，Li Yanping explained to me that the force of gravity would change three times on our journey and that the first change would be the most powerful.,Then we were off.As the rocket rose into the air，we were pushed back into our seats because we were trying to escape the pull of the earths gravity.It was so hard that we could not say anything to each other.Gradually the weight lessened and I was able to talk to him.,“Why is the spaceship not falling back to the earth？On the earth if I fall from a tree I will fall to the ground.” I asked.“We are too far from the earth now to feel its pull，” he explained，“so we feel as if there is no gravity at all.When we get closer to the moon，we shall feel its gravity pulling us，but it will not be as strong a pull as the earths.” I cheered up immediately and floated weightlessly around in our spaceship cabin watching the earth become smaller and the moon larger.,When we got there，I wanted to explore immediately.“Come on，”I said.“If you are right，my weight will be less than on the earth because the moon is smaller and I will be able to move more freely.I might even grow taller if I stay here long enough.I shall certainly weigh less！”I laughed and climbed down the steps from the spaceship.But when I tried to step forward，I found I was carried twice as far as on the earth and fell over.,“Oh dear，”I cried，“walking does need a bit of practice now that gravity has changed.”After a while I got the hang of it and we began to enjoy ourselves.Leaving the moons gravity was not as painful as leaving the earths.But returning to the earth was very frightening.,We watched，amazed as fire broke out on the outside of the spaceship as the earths gravity increased.Again we were pushed hard into our seats as we came back to land.“That was very exhausting but very exciting too，” I said.“Now I know much more about gravity！Do you thi