仁爱版八年级上册单元知识点复习unit4.doc

Unit 4 Our WorldTopic1 we share the world with plants and animals一.重点词语1. share…with 与……共享2. play with 玩弄，玩耍3. in danger 在危险之中4. feed on 以……为食5. think about 考虑，思考6. enjoy nature 享受自然7. at night 晚上8. in the daytime 白天9. summer vacation 暑假10. thousands of 成千上万11. in fact 事实上12. find out 查明，发现13. in nature 在自然界二.重点句型１.Ｐlants are more beautiful than animals.　植物比动物更漂亮２.The plants stay green longer there.　那儿的植物能更长时间保持绿色３.The rainforests are very important to us.　（热带）雨林对我们很重要４.Water is necessary for all plants.It is the most important thing to all living things,we must save every drop of water.　水对所有植物是必需的。

它对所有生物都重要，我们必须节约每一滴水５.Isn’t it interesting？　是不是很有趣呀？６.It is one of the most dangerous fish in the world.　它是世界上最危险的鱼之一７.It is so strange！　太奇怪了！三.语法学习（一.）形容词的比较级和最高级的构成１. 规则变化：（1.）一般在词尾加—er或—est.如：fresh—fresher—freshest.（2.）以字母e结尾的形容词，加r或st,如：late—later—latest.（3.）以重读闭音节结尾的词，词尾只有一个辅音字母时，应双写这一辅音字母，再加er或est.如：big—bigger—biggest.（4.）以辅音字母＋y结尾的双音节词，先改y为i，再加er 或est.happy—happier—happiest.（5.）部分双音节词和多音节词前面加more或most构成比较级或最高级如：careful—more careful—most careful,beautiful—more beautiful—most beautiful.２.不规则变化：good/well—better—best,little—less—least,many/much—more—most,bad/ill—worse—worst,fa r—farther/further—farthest/furthest.（二.）形容词的比较级和最高级的用法１. 比较级Ａ＜Ｂ或Ａ＞Ｂ，经常与than搭配，或给出比较的二个内容。

可用much和a little修饰．２. 三者或三者以上比较用最高级，一般给出比较范围．如：of（in）＋…1)例句：①I’m happier than you.　我比你更快乐②Plants are much more beautiful than animals.　植物比动物漂亮的多２)例句：①The boy is the tallest in my class.　这个男孩是我们班最高的②Lesson Two is the most important of all.　第二课是所有中最重要的一、写出以下各形容词的比较级和最高级：1. nice ______________________ 2. fat ____________________3. slow _____________________ 4. dry ____________________5. happy ____________________ 6. wet ____________________7. much ____________________ 8. ill _____________________9. little _____________________ 10. bad ___________________11. thin ______________________ 12. far ____________________13. early _____________________ 14. careful_________________ 15. exciting ___________________ 16. busy __________________二、根据句意，用所括号内所级形容词的比较等级形式填空：1. Bob is _________ ( young ) than Fred but ___________ (tall) than Fred. 2. Yingtian is not as ___________ (tall) as Yongxian. 3. Almost all the students faces are the same but Li Deming looks _______(fat) than before . 4.Which is _________ (heavy), a hen or a chicken? 5.-- How _________ (tall) is Sally? -- She s 1.55 metres ________ (tall). What about Xiaoling? -- She s only 1.40 metres ________(tall). She is much _______(short) than Sally. She is also the _______ (short) girl in the class. 35. Skating is ____ ___ than swimming. (exciting)36. Jim is ____ ___ than all the others. (honest)37. Things are getting _______ and _______. (bad)38. The higher you climb, the _______ it will be. (cold)39. Now his life is becoming ________ and _____ __. (difficult)40. There are _______ boys than girls in our class. (few) 答案：一、1. nicer / nicest 2. fatter / fattest 3. slower / slowest 4. drier / driest5. happier / happiest 6. wetter / wettest7. more / most 8. worse / worst9. less / least 10. worse / worst11. thinner / thinnest 12. farther / farthest 或 further / furthest 13. earlier / earliest 14. more careful / most careful15. more exciting / most exciting 16. busier / busiest二、1. younger, taller 2. tall 3. fatter 4. heavier5. tall, tall, tall, shorter, shortest 6. bad, worse, worst7. kindest 8. friendlier 9. more expensive10. bigger, smaller 11. longest 12. more beautiful13. big 14. more difficult 15. well, better, best16. busiest 17. fatter, fatter 18. cheaper 19. earlier20. interesting 21. wider, brighter 22. much23. more, better 24. more important 25. more dangerous, most dangerous 26 richest 27. coldest 28cheap 29hotter 30 more careful 31 More 32 easier 33smaller 34 farter [further] 35more exciting 36 more honest 37 worse, worse 38 colder 39 more, more difficult 40 fewer 四.交际用语：学习如何用英语描述和谈论我们生存的自然环境Do you like plants or animals?What are you thinking about?Why do you think so?What kind of wild animal is the most dangerous,the tiger,the snake or the bear?Why must we save every drop of water?Ⅰ. 单项选择。

10分）( )1.All animals need _______ water. A.little B.many C.lot of D.plenty of( )2.—You are standing too near to the TV. Can you move a bit _______? —OK, Mom. Is it all right here? A.faster B.slower C.farther D.nearer( )3.—Did you have breakfast this morning? —No, I got up late and went to school _______ breakfast. A.for B.in。