必修3 unit4复习课件

1、Book3 Unit 4Astronomy：the science of the stars1. _ n. 卫星2. _ n. 气候3. _ n. 宇宙飞船4. _ n. 引力；重力5. _ n. 气氛；大气层6. _ n. 宗教_adj. 宗教的7. _ n. 生物_n. 生物学家 satellite climatespaceshipgravity atmospherereligionreligiousbiologybiologist重点单词8. _ n. 球体；地球仪；地球9. _ n. 大气层；气氛10. _ v. 乘；增加11. _ v. 碰撞；坠落12. _ vt.& n. 拉(力)

2、；拖；牵13. _ v.(使)浮动 n. 漂浮物14. _ adj. 温和的；文雅的15. _ adv. 因此；于是16. _ n. 氧pull globeatmospheremultiplycrashfloatgentlethusoxygen.单词荟萃1_n天文学_n天文学家2_n生物学_n生物学家_adj.生物学的3. _n物理学家_adj.物理学的_n物理，物理学 _n内科医生4. _vi.存在_n存在5_ vt.使迷惑_n难题；谜_adj.迷惑不解的_adj. 令人困惑的astronomyastronomerbiologybiologistphysicistphysicalphysic

3、sexistexistencepuzzlepuzzlepuzzledbiological puzzlingphysician6. _adj.猛烈的_n暴力_adv.猛烈地7. _adj.有害的_adj. 无害的_n害处_vt.对有害8. _adj.全世界的；全球性的_ n球体；地球仪9. _prep.不像；和不同_(反义词)prep. _v. & n不喜欢10. _n质量；团；块；大量_ (pl.)群众11. _ n.&vt. 拉；拖 (反义词) _ n.& vt. 推violentviolenceviolentlyharmfulharmlessharmglobalglobelikedisli

4、ke massunlikemassesharmpullpush 1. 及时_ 2. 下蛋_3. 生；分娩_ 4. 轮到某人；接着_5. 阻止某人做某事_ 6. 挡住_7. 感到高兴；振作_in timelay eggsgive birth to in ones turnprevent sb. from doing sth. block out cheer up 重点短语8. 既然_ 9. 爆发_ 10. 密切注视；当心；提防_11. 熟悉；掌握；理解_ 12. 对有害_13. 太阳系_ 14. 二氧化碳_ now thatbreak outwatch out (for)get the hang

5、 of be harmful to/do harm tosolar system carbon dioxide Playing computer games for a long time is very_ (harm) to our health. 2. Their untrue comments _ (violence) hurt the feeling of Chinese people. 3. His answer to the question sounds _ (puzzle) and we are all _ (puzzle) a lot.4._ as she was，there

6、 was no hope of her being able to sleep.(exhaust )三、用所给单词的适当形式填空 harmfulviolently puzzlingpuzzledExhausted 4. As far as I am concerned, strong will, diligence, and devotion as well as perseverance are four _ (fundament) factors contributing to success.5. Few people understand that the _ (exist) of r

7、are animals is closely related to our life.作从句的主语 fundamental existence作定语用形容词1. According to the survey, most girls are not as interested in basketball as boys are. 根据调查, 大部分女生不像男生一样对篮球感兴趣。2. There is no denying the fact that mobile phones bring great convenience to our life, but their radiation ma

8、y be harmful to our health. 不容否认手机给我们的生活带来极大的便利，但是它们的辐射可能对我们的健康有害。3. As far as I am concerned, the government is supposed to take effective measures to prevent the haze from getting worse.依我看，政府理应采取有效措施防止雾霾(haze)变得越来越糟糕4. Whether the global warming will become more serious depends on whether our act

9、ivities will produce more carbon dioxide.地球变暖是否加剧取决于我们的活动是否产生更多的二氧化碳。四、朗读下列例句，并抄写进作业本里面1. _ was not immediately obvious that water was to be fundamental _ the development of life. 水会对生命的发展起关键作用，这一点在当时并不太明显。2. What it was _ (become) was uncertain _ between 4.5 and 3.8 billion years ago _ the dust set

10、tled into a solid globe. 它会变成什么还没有人知道，直到38亿45亿年前，这团尘埃才慢慢地形成一个固体的球体。Itto课文优美句子to become untilwhen3. What is even _ (important) is that as the earth cooled down, water began to appear on _ surface. 更为重要的是，地球冷却了下来，地球的表面就开始出现了水。4. So _ life will continue on the earth for millions of years _ (come) will

11、depend on whether this problem can _ (solve). 所以，在未来的数百万年中，生命能否在地球上延续取决于这个问题能否得到解决。 more importantits whetherto comebe solved原句: They laid eggs too and existed on the earth for more than 140 million years. 恐龙也会下蛋, 而且在地球上存活了超过1.4亿年。(B3 P26)1. exist vi. 存在, 生存, 生活, 继续存在exist in 存在于中exist on=live on 靠生

12、活exist as 作为而存在, We cant exist without water. That means our _ (exist) depends on water.运用 The little boy cannot exist _ the money he is earning. Matter can exist _ a solid, liquid or gas.onas existence原句: How life began on earth is one of the biggest puzzles that scientists found hard to solve. 生命是

13、如何起源的这个问题是科学家很难解答的最大困惑之一。(B3 P27)2. puzzle n. 谜; 难题v. (使)迷惑; (使)为难例句: How he passed the exam is still a puzzle to us. 他如何通过考试的对我们来说还是一个谜。be puzzled by被迷惑be a puzzle to sb. 对某人来说是个谜/困惑be/feel puzzled about 对感到困惑运用 填入一个恰当的词或完成句子。 Your explanation was really a puzzle _ me. His recent behavior_ (使我困惑).

14、to puzzles me 原句: They are putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the earth into space. 他们把过多的二氧化碳释放到大气层中, 这使得地球上的热不能释放到太空中去。(B3 P26)3. prevent /stop /keep.from 阻止/防止做/发生运用 根据汉语提示完成句子。上涨的河水使我们过不了河。The rising water _ _ .人们采取行动来防止了环境的恶化。People took

15、measures _ _.prevented us fromcrossing the riverto prevent theenvironment from getting worse运用 根据汉语意思完成英文句子。 既然大家都来了, 我们就开会吧。_, lets begin our meeting. 既然已完成了工作, 你就应该好好休息。You ought to have a good rest _ _ .Now that/Since everybody is heresince/nowthat/as you have finished the work原句:We watched, amaz

16、ed as fire broke out on the outside of the spaceship as the earth gravity increased. 因为地球引力增加, 所以当宇宙飞船外边察出火花时我们看呆了。(B3 P31)5. break out (火灾/战争/地震等)爆发; 发生break into 破门而入break up (组织, 公司等)解散 break away from脱离写作句型仿写原句: It was not immediately obvious that water was to be fundamental to the development o

17、f life. 水对于生命的发展会起关键作用, 这一点在当时并不明显。(B3 P26)1. It is obvious that. 显然(=)例句: It was obvious that he had been late for school again. 很明显他又迟到了。短语: be fundamental to 对是必要的; 对是根本的同义: obviously/apparently, /It is quite clear that.仿写 根据汉语意思, 完成英文句子。 很显然他没有成功。 It is obvious that he hasnt been successful （2）很

18、明显你的学生昨天没有说实话。_ _ yesterday.It was obvious that your student didnt tell you the truth原句 This produced a chain reaction, which made it possible for life to develop. 这就产生了一系列的反应, 使得生命就有可能开始发展了。(B3 P26)2. make it + adj. + for sb. to do使某人做某事例句 :The present situation makes it difficult for us to accompl

19、ish the task on time. 目前的情况使我们很难按时完成任务。说明: it是形式宾语, 后面的to do才是真正的宾语。1.这本字典使我学习英语容易多了。The dictionary _ _ English.2.这座桥使我们很方便过河。The bridge _ _ the river.makes it mucheasier for me to learnmade it quite convenientfor us to cross原句: 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. 当我们更接近月球时, 就会感到月球的引力在拉我们。但是, 月球