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1、Language points,Unit 4 Reading I,1. However, according to a widely accepted theory, the universe began with a “Big Bang” that threw matter in all directions. to begin with和 to start with:两个词组都有“以开始”的意思.,1)to begin with 以为起点; 开始(做) 2)to start with 以.开始; 从着手; 由作为开头 这两个词组都可以单独使用,表示“首先; 第一; 起初; 最初”.在句中作
2、时间状语. e.g. To begin/start with, I couldnt understand every word. 起初, 我一句也没弄明白.,2. What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe.,_(使大家吃惊的是)is that he didnt come to the meeting.,What surprised everybody,2. _(他所做的) added to our
3、 difficulty.,What he did,_ we cant get seems better than _ we have. What; what B. What; that C. That; that D. That;what _ made the school proud was _ more than 90% of the students had been admitted to key universities. A.What;because B. What;that; C. That;what D.That;because,A,B,3. The earth became
4、so violent that it was not clear whether the solid shape would last or not. 问题是地球开始变得激烈动荡,不知道这个固体形状是否会继续下去。,n. 固体 solid, liquid, gas adj. 固体的;实心的, 无空隙的;结实的,坚固的,solid fuels solid food solid furniture a man of solid build,1) Matter has three states: solid, liquid and gas.,2) When water freezes, it bec
5、omes solid and we call it ice.,4. It exploded loudly with fire and rock.,1). (使某物)炸开,爆炸,2). (指感情)激发,3). (指人口)突然或迅速增加,The firework exploded in his hand and he was hurt seriously.,I was frightened when she exploded into loud laughter.,Now it is not easy to find jobs with the exploding population.,expl
6、osion n. 爆炸(声),explosive adj.爆炸性的,易爆炸的 n.炸药,爆炸物,5. They were in time to produce carbon, nitrogen, water vapour and other gases in time (for sth/to do sth): not late 及时;不迟 She will be back in time to prepare dinner. 她来得及回来准备晚饭。,in time: sooner or later; eventually 迟早;最后 Ill see him in time. 总有一天我会遇见他
7、。,in/out of time: in/not in the correct time 合/不合节拍 The audience clapped in time to the music. 观众合着音乐的节拍拍手。,6. What is even more important is that as the earth cooled down, water began to appear on its surface. 随着地球的冷却, 地球的表面就开始出现了水。,cool adj. 凉快;冷静;冷淡,v. (使)变冷;冷静下来,1) Lets sit in the shade and get
8、cool. 2) I knew I had to keep cool. 3) His play received a cool response from the public.,4) The rain has cooled the air. 5) Let your soup cool a little before you drink it. 6) A heated argument can be settled better if both sides cool down first. 7) I tried to cool her down but she was still very a
9、ngry when she left.,7. It was not immediately obvious that water was to be fundamental to the development of life. 水会对于生命的发展起关键作用, 这一点在当时并不太明显. 本句体现的是名词性从句在句中作主语的作用,虽然是以It开头,可是It只起到形式主语的作用, 真正的主语是that water was to be fundamental to the development of life. 用It做形式主语是因为that引导的从句较长,如果按照正常语序来安排的话就显得头重脚轻
10、了. 如: It is no wonder that he has passed the exam.,8. 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.,allow vt. 允许、许可、容许allow+n./pron./doing allow sb. to do be allowed to do,My father doesnt allow sm
11、oking at home. In fact he doesnt allow us to smoke anywhere at any time.,父亲不允许在家里吸烟。实际上,他不允许我们在任何地方任何时候吸烟。,Are we allowed to use the computer?,我们可以用电脑么?,be harmful to 对有害,do harm to sb. = do sb. harm 伤害某人,对某人有害处,1) Pollution is especially harmful to animals.,2) Smoking will do you a lot of harm.,The
12、 foreign Minister said, “_ our hope that the two sides will work towards peace. ”(2007BJ) A. This is B. There is C. That is D. It is,2. I like _ in the autumn when the weather is clear and bright. (NMET2008) A. this B. that C. it D. one,D,C,9. This produced a chain reaction, which made it possible f
13、or life to develop.,it作形式宾语,其真正的宾语可以是不定式, 动名词和从句。,3. Why dont you bring _ to his attention that you are too busy to do it? A. this B. that C. what D. it,D,4. Why? I have nothing to confess. _ you want me to say? A. What is it that B. What it is that C. How is it that D. How it is that 5. Was it at t
14、he school _ was named after a hero _ he spent his childhood? A. which ; that B. where; where C. that; where D. which; where,A,A,10. They multiplied and filled the oceans and seas with oxygen.,multiply (数目上)增加,增多;乘;(使)繁殖,1) Our problems have multiplied since last year.,2) 2 and 5 multiply to make 10.
15、,4) The plants here multiply rapidly.,3) 6 multiplied by 5 is 30.,= Multiply 6 by 5 to make 30.,11. which encouraged the later development of early shellfish and all sorts of fish.,encourage 鼓舞;促进;怂恿。后接名词、代词,也可接不定式作宾语补足语。如:,High prices for corn and wheat will encourage farming.,玉米和小麦的高价将促进农业的发展。,My
16、success encouraged me to continue.,我的成功鼓励我继续干下去。,He encouraged me to learn dancing.,他鼓励我去学跳舞。,development (1)U成长,发育;发展(过程);扩展,The development of this industry will take several years. 这项工业的发展要经过几年的时间。,(2)C开发区, 新社区 a new housing development 新建住宅区,(3) C进化,进展;新情况,新闻 What are the latest developments? Th
17、e use of computers in teaching is a recent development. 教学上使用计算机是新近才有的事.,12. Others, called amphibians, were able to live on land as well as in the water. 另外一些叫作两栖动物, 它们既能在陆地上生活也能在水里生存. as well as 表示“(除.之外)也; 既又”. 如: Im learning French as well as English. 我学英语之外还学法语. He grows flowers as well as vege
18、tables. 他既种菜也种花.,13. They produced young generally by laying eggs.,Its generally believed that一般认为,generally speaking 一般而言,概括来说,1) Its generally believed that girls work harder than boys do.,2) Generally speaking, women cry more easily than men.,14.They produced young generally by laying eggs. 它们一般是
19、通过孵蛋而繁衍后代的. Lie, lie , lay 的区别如下:,15. small clever animals, now with hands and feet, appeared and spread all over the earth.,vi.,散布, 传播,蔓延, 伸展,扩展,vt.,铺开,摊开,1) The news spread through the school very quickly. 2) Theres a desert spreading for hundreds of miles.,3) He spread out his arms to welcome us.
20、 4) I spread a new cloth on the table.,16. They are putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the earth into space.,阻止某人做某事 :,prevent sb. (from) doing sth.,stop sb. (from) doing sth.,keep sb. from doing sth.,1) We must prevent them from making troubl
21、e.,2) You should prevent the child from injuring himself.,If nothing prevents, ,如果没有什么阻碍的话 , ,17. So whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved. 在未来的千百万年中,生命能否在地球一延续将取决于这个问题能否得到解决。,depend vi. 相信,信赖;依靠,依赖 (尤指钱); 视而定 You can depend on John he is always on time. 你可以相信约翰,他总是很准时。,相关短语:,believe sb. 相信某人(所说的话) believe in sb. 信任/信赖某人 trust (in) sb. 相信/信任/信赖某人 depend on count on sb. rely on,信任/相信/依赖/依靠某人,Tell him what you want to say; hes a man to
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