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UNIT 4 TOPIC 1重要短语:1. think about 思考 think of 认为，想起 think over 仔细考虑 2. run after 追赶 3. as we know=it is well known that 众所周知4. be important to sb. 对某人来说很重要5.share sth. with sb. 与某人分享某事6.cover.with. 用.覆盖.7. on the surface 表面上，从外表看8. provide sth for sb =provide sb with sth 为某人提供某物9. thousands of 成千上万的（百，千，百万，十亿无具体数目后面要加“s”，如：hundreds of, millions of , billions of.等等。如果有具体数词连用则不加s，如：one thousand, two thousand, three thousand.）10. play a part in 在 起作用11. control oneself 控制自己12. die out 灭绝13. for many reasons 因为许多原因 14. smaller and smaller 越来越小 （“形容词比较级+and+形容词比较级”结构表示“越来越.”的意思。） the+形容词比较级，the+形容词比较级 越.就越.15.protect sth./sb. from sth. 保护某物/某人免于.16. feed on 以.为食 feed sth. to sb./sth. 把.喂给.吃 feed sb./sth. with(on) sth. 拿.来喂.17. in number 数量上18. in danger/ out of danger 处在危险中/ 脱离危险Key Sentence:1. What are you thinking about? 你在想什么呢？Im thinking about life in the countryside. 我在想念乡村的生活。2. I like it very much because the air is fresher, the sky is bluer and the rivers are clearer there. 我非常喜欢乡下更新鲜的空气，更蓝的天，以及更清澈的河流。3. I think the countryside is much quieter than the city. 我认为乡下比城里更安静。4. People can enjoy the beauty of nature there. 人们可以享受那儿的自然风光。5. Which do you like better, plants or animals? 植物跟动物你更喜欢哪个？ I like animals better. 我更喜欢动物。7. I think roses are the nicest of all the flowers. 我认为玫瑰是所有花当中最美的。8. They play an important part in controlling the climate.它们在控制气候方面发挥了重要作用。9.But now, rainforests are becoming smaller and smaller, so we should protect them.但是现在雨林变得越来越小。因此，我们应该保护它们。Grammar: 形容词的比较级，最高级变化规则A,单音节和少数多音节的形容词1.一般在词尾加上-er,-est: greatgreatergreatest2.以不发音e结尾只加-r,-st: nicenicernicest3.以辅-元-辅(1)，末尾只有一个辅音字母结尾的重读闭音节，双写这一辅音字母,再加-er,-est: big-bigger-biggest4. 辅音字母+y结尾的形容词将-y去掉，然后加-ier,-iest： happy-happier-happiest easy-easier-easiest narrow-narrower-narrowestB.部分双音节和多音节词1.在前面加more,most: difficultmore difficultmost difficult polite-more polite-most polite2.分词形容词前的比较和最高级，一般在其前加more,most: 物: more interesting-most interesting 人:more tired-most tired注意： 不规则变化： good/well-better-best bad/ill-worse-worst little-less-least much/many-more-most far-farther-farthest（只指距离） far-further-furthest（指距离，常指程度）Unit 4 topic 2Key Phrases:1.fall down 倒塌，摔倒，掉下2.another two + n.=two more +n. 再两个，另两个3.lose ones life/lives 失去生命4. more than 超过5. protect sb. from doing sth 保护某人免受的伤害6.ask sb. for help 向某人求助7.hear of/about 听说 hear from 收到某人的来信8.how to do sth. 怎样做某事9.run out of 从跑出来10.stay/keep calm 保持冷静11. be/get hurt 受伤12.keep sb. / sth. + adj. 保持 / 护某人 / 物 keep our classroom clean 保持教室清洁 keep us healthy 保持健康13.close to 靠近 / 接近 （介词短语）14. in the middle of 在的中央15. remember to do sth 记得去做某事（事情还没做） remember doing sth 记得做过某事（事情做了）16. stay away from = get away from 远离17. be careful of sth 小心某物18. falled power lines 掉落的电线19. be over 结束20. turn on/ off 打开/关掉21. five million 五百万 22. with the help of sb. / sth. = with ones help 在的帮助下23. the whole nation 全国24. rebuild ones home 重建家园25. return to normal life 恢复正常的生活26. over again 再次，重新 Key Sentence:1. A terrible earthquake struck Qinghai. 一场可怕的地震在青海爆发。2. Some people died and many people are missing. 有些人死了，还有好多人失踪了。3. Im very sorry to hear that. 听到那件事，我感到非常抱歉。4. I think the Wenchuan earthquake in 2008 was more serious than this one, but the Tangshan earthquake in 1976 was the most serious. 5. How can we protect ourselves from the earthquake? 我们要怎么在地震中保护我们自己？6. Lets ask Miss Wang for help. 让我们向王老师求助吧。7. It killed more than two thousand people and hurt more. 它杀死了超过2千多人并且很多人受伤了。8. Remember, the most important thing is to stay calm. 记住，最重要的是保持冷静。Grammar: 形容词的比较级和最高级的用法。1. 比较级的用法：用于两者之间的对比。 1). A + be +形容词比较级 + than + B” 意思为“A比B更” She is heavier than Kate.This lesson is more difficult than that one. 2) 比较级+ and + 比较级， 表示“越来越” In spring，the weather gets warmer and warmer.b She is getting more and more beautiful.3）在含有or的选择疑问句中，如果有两者供选择，前面的形容词要用比较级形式。 Who is taller,Tim or Tom? 谁更高，Tim还是Tom?4）. “the +比较级, the+比较级”，表示“越，越”。The more money you make, the more you spend. 钱你赚得越多，花得越多。The sooner，the better. 越快越好。 5） 表示两者中“较” ，用 the + 比较级+ of 表达。Canada is the larger of the two countries.加拿大是这两个国家中较大的 那一个。6） 在比较级前面使用much，a little, a lot, even，表示比较物体的差别程度。如：A watermelon is much bigger than an apple.2.最高级：用来表示三者或三者以上人或事物的比较，表示“最”的意思。比较范围常用of, in ,among引导的的短语。如：He is the tallest in our class. 他在我们班里是最高的。3.比较级与最高级的转换：Mike is the most intelligent in his class.=Mike is more intelligent than any other student in his class.=Mike is more intelligent than the other students in his class.注意：1.在含有连词than的比较级中，前后的比较对象必须是同一范畴，即同类事物之间的比较，且被比较事物不能包括本身。2. 比较对象相同时， 用that/ those 代替第二个比较对象。The food in Sichuan is hotter than that in Guangdong. 3. so, very, quite一般只能修饰原级，不能修饰比较级。Unit 4 topic 3Key Phrases:1.on/through the Internet 在互联网上2. chat with sb. 和某人聊天3. face to face 面对面4.come into being 形成5.make it into use 开始使用6.in the 1960s 在20世纪60年代7. do some shopping 购物8.find information 查资料9. find out 查明，弄清10. Guess what！ 你猜怎么着11. put into 把放进12. be sure that be not sure if/ whether 13. some day “某一天” 一般将来时 one day “某一天，有一天” 一般将来时 一般过去时14. become an important part of 成为的重要部分15. make friends 交朋友16. send emails 发邮件17. use sth to do sth 使用某物做某事18. get money by cheating 骗钱19. spend time/money on sth. /in doing sth 花时间（金钱）做某事20. for the better 向着好的情况21. search for information 搜索资料22. How long 多久？ How soon 多快？ How often 多经常？23. for example 比如24. change into 把变成，把翻译成25. look up （字典中）查找26. be different from 与不同Key Sentence:1. I can also chat with my grandmother face to face. 我还可以和我的奶奶面对面聊天。2.The Internet makes the world smaller. 因特网使这个世界变小了。3.Scientists started to study the Internet in the 1960s and made it into use in the 1990s. 科学家在20世纪60年代开始研究因特网，并在90年代将其投入使用。4. Im sure the Internet will become more and more important to us. 我相信因特网会对我们越来越重要。5. Im not sure if that is a good idea. 我不确信这是否是个好主意。Grammar: “S + V + O + OC” ( 主语+谓语+宾语+宾语补足语) 例子： The Internet makes the world smaller. 互联网使世界变得更小。 S + V + O + OC 特别注意：make的用法：make sb./sth. + do sth ; make sb./sth.+ n.; make sb/sth.+ adj. He often makes us laugh. 他经常使我们大笑。 They made Mr. Brown headmaster. 他们选了他为校长。 The funny movie made us happy. 那部搞笑的电影使我们开心。类此的结构： 1) let/make sb. do sth. make sb./sth. adj. make sb. n. 2) keep sb./sth adj. keep sb. doing; 使某人保持做 3) see sb. doing/do sth. 4) ask sb. to do sth 5) help sb. (to) do sth. The Internet makes the world smaller. It also helps us to find information much faster.
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