仁爱八年级Unit4topic1知识点详解及练习

1、Unit4 Our worldTopic1 Which do you like better,plants or animals?一重点短语：1.成千上万的 thousands of 2 .灭绝 die out 3.以.为食 feed on 4.越来越少less and less 5.处于危险状态be in danger 6. 考虑，思考 think of /about 7.在农村in the countryside 8. 给某人提供某物provide sth for sb 9.与.分享.share sth with sb 10.在.扮演重要角色 play an important part

2、/role 11.和.一起玩 play .with 12. be important to sb对某人来说是重要的 13.in the south of China 在中国的南部14. 在数量上越来越少become fewer and fewer in number 15欣赏自然之美enjoy the beauty of nature16. 为了他们的毛皮和骨头杀了他们kill them for their fur and bones 17.众所周知 as we know 18. 储存水hold the water 19.保持水循环keep the water cycling 20.控制气候

3、control the climate二重点句子：1. I think the countryside is much quieter than the city.2.He is lazier than me.3. I think roses are the nicest of all the flowers.4. As we know ,they are both important to us .5. We share the same world with them.6. Because animals are our friends .They make me happy.7. Whi

4、ch kind of animals do you like better, frogs or snakes?8.热带雨林的重要性的句子。课本P85三. 基础词汇和句型： think about 意为 “考虑，思考”时， 与think of 可以互换使用。后面所接动词要用ing形式。 注意：think of 还有 “认为，想起”,这时二者不能互换使用。1. I am thinking about _ (get)a new dictionary.2.让我考虑一会儿。Let me _ _ it for a while.3.你觉得这场篮球赛怎么样？What do you _ the basketba

5、ll match?4.她经常想起她的朋友安娜。She often _ _ her friend,Anna. 链接: think over 仔细考虑 e.g. You had bettter think it over and then write down your answers. in the countryside 在乡村 in the city 在城市 enjoy sth.喜欢.，享受.；enjoy doing sth. 喜欢做某事；enjoy oneself =have a good time 玩得开心 Lots of people enjoy _(listen ) to music

6、 to relax themselves. nature 名词， “自然，自然界”。 e.g. Its important for us to keep the balance (平衡)of nature.natural 形容词， “自然的，天生的” e.g. He is a natral musican.Lucy dances very well ,she is a_(nature) dancer. “of all/the +基数词”,表示 “在所有/三者或三者以上之中” ,应用最高级。e.g. Kate runs the fastest of all.He is _ of all. A.t

7、all B.taller C. the tallest sheep 绵羊，单复数同形，类似的词还有deer, Chininese ,Japanese As we know ,they are both important to us 1.as we know 众所周知 e.g. As we know, water is very important to us. 2.both 两者都，常用的结构有both .and ,其后的谓语动词要用复数。 Both he and his father _ (want) to visit Beijing on holiday.3. be important

8、to sb 对某人来说是重要的。 Your idea is very important _ us. We should follow it. share .with 意为 “与.分享.，和.共用” e.g. Would you like to share the cake with your brother? 外面下雨了，你愿意我和你共用一把伞吗？Its raining outside, would you like to _ your umbrella _ me. or 的用法1.意为 “或者”时,表示选择关系2.or 还意为 “否则”,表示转折关系。but “但是”,表示转折。and表示

9、并列或承接关系。 a. Be quick,_ well miss the flight to Hainan Island. A.or B.but C.and b. Studay hard, _ you will fall behind.(or,but ,and) c.Money is very important ,_ its not be the most important thing. (or,but ,and) d.Which do you like better, the moon _ the sun? (or,but ,and) like .better “更喜欢.”,常用于两者之

10、间的比较。e.g. Which do you like better, basketball or football? like.best “最喜欢”,常用于最高级中。e.g. Which subject do you like best? 译：_ Which kind of music do you like _(good) ,pop music or classical music? cover 作动词，意为 “覆盖，遮盖”。 e.g. She covered her face with her hands. 译：_ 作名词，意为 “盖子，封面” ,e.g. The book needs

11、a new cover. 译：_ be covered with “被.所覆盖” e.g. The road was covered with snow. 译：_ Most of the earth is _ with water. A. cover B. covered C.covering earth 1.the earth 地球 2.泥土e.g. sandy earth 沙土 on earth 1.（用于加强语气）究竟，到底 e.g.What on earth is the problem? 译：_2. 在世界上,=in the world on the earth1.在世界上，= in

12、 the world 2.在地球上 e.g. He is the luckiest man on （the) earth. 译：_ wood 作不可数名词，意为 “木材，木料”。 e.g. The chair is made of wood.译：_ 意为“树林”，可数名词 e.g. There is a wood near my house. 译：_ 形容词是wooden “木制的，木头的” e.g. a wooden chair .译：_ I like the _(wood ) table very much .Its very nice. hundred,thousand,million

13、的用法 1.这些词表示不确定数目时，可与of构成短语，但要切记，这些词之后要加 “s” ,e.g. millions of 2.表示确定数目时，要在这些词前加具体的数目，但这些词之后不加“s”, 且不需要加of. a.我的MP4 花了我200 元。 My MP4 cost me two _ yuan. b. _ parts make up the machine. A.Hunderds of B.Hundred of C. Two hunderds of They play an important part in controlling the climate. 1.play an impo

14、tant part/role in (doing) sth 在.中扮演着重要的角色。 电脑正在我们的日常生活中扮演着重要的角色。 Computers _ _ _ _ _ in our daily life2. control 动词，“控制”，过去式controlled ,现在分词controlling, smaller and smaller “越来越小” 比较级+and+ 比较级，表示“越来越.fatter and fatter 译：_ stronger and stronger译：_ 链接：部分双音节或多音节的形容词要表达“越来越.”时，则要同“more and more +多音节的形容词

15、” e.g. more and more interesting译：_ more and more beautiful译：_如果要表达“越来越不.，则用 “less and less +多音节的形容词” e.g. less and less careful译：_ provide sth for sb =provide sb with sth 为某人提供某物练习：1.政府为他们提供了房子。The government _ them _ houses. =The government _ houses _ them. 2.超市应该为我们提供各种健康食品。Supermarket should _ u

16、s _ _ _ healthy food.3. 120必须为病人提供及时的救助。120 must _ help _ the patients _ _. feed 作动词，意为 “喂，饲养” e.g. My job is to feed the animals. feed on 以.为食 e.g. Sheep feed on grass. The animals _ grass best. Kate likes them very much. A. feed on B.feeds on C. fed on be in danger “处于危险中”，be in +名词，用来表示“某人/某物处于.中

17、。类似的短语还有be in trouble，danger是名词，形容词是dangerous1. Tigers are _ animals .(dangerous,danger)2. She is a kind woman, and she often helps people_. A.in dangerous B.in trouble C.in the trouble wolf 意为 “狼”，复数形式是wolves W_ are dangerous animals .You shoul keep away from them. in number 在数量上 in the south of 在.

18、的南方。 类似的还有in the east/west/north of 在.的东方/西方/北方 in the south of China =in South China “在华南” in 表示“在.范围之内”e.g. Guangzhou is in the south of China. 我们都知道四川在中国的西部。We all know Sichuan is _ _ _ of China.四语法：形容词，副词的比较等级1.大多数形容词和副词有三个比较等级：1)原级，即原形。e.g. Im tall.2)比较级，表示“较” ,用于两者之间的比较。 e.g. Im taller. 3)最高级，

19、表示“最”m the tallest.2.形容词比较级最高级构成：1) 规则变化一般在词尾加-er或-est. e.g. young -younger- youngest；long-longer-longest以字母e结尾的词，加-r或-st. e.g. large-larger-largest以“辅音字母y” 结尾的双音节词，先改“y”为“i”，再加-er或-est. e.g. easy-easier- easiest；hungry- hungrier-hungriest 重读闭音节只有一个辅音字母时，应先双写辅音字母，再加-er或-est. e.g. big -bigger -bigges

20、t ；red- redder- reddest部分双音节词或多音节词前面加more ,most.e.g. interesting-more interesting-most interesting; famous-more famous-most famous2）不规则变化：good/well-better-best； bad/ill-worse-worst； many/much-more-mostlittle-less-least；far-farther/further-farthest/furthest; old-older/ elder-oldest/eldest两好，两多、两坏、两多、

21、 一少、一老 、一远. 3.形容词、副词比较等级的用法1) 原级:可用very, quite, so, too,等词修饰. Jim is _ tall.(very, much)2) 比较级:可用much ,even, a lot ,a little 等修饰. He is _ richer than me. (very, much)主要句型有：a. 比较级+than e.g Mary is much younger than Sue.b. 疑问句+动词+比较级, A or B? e.g. Who draws better ,Tom or Jim?c. 比较级+ and+比较级 e.g. The

22、days are getting shorter and shorter.d. more and more+原级（多音节/双音节）e.g. The girl is becoming more and more beautiful.e. 比较级+than the other +名词复数 e.g. He is taller than the other boys in our class.f. 比较级+than any other +名词单数 e.g. = He is taller than any other boy in our class. =He is the tallest boy in

23、 our class.g. 数字+比较级+than+比较对象 e.g. He is one year older than me.h. The +比较级 ， the +比较级越就越 e.g. The more you eat ,the fatter you will be.The more, the better.越多越好。i. the +比较级 of the two/ twins 二者/双胞胎中比较的那个。e.g. Lucy is the _ of the twins.露西是双胞胎中比较高的那个。 He is the _ _ of the two. 他是两个人比较帅的那个。3）最高级 : 形

24、容词的最高级要加定冠词the , 副词最高级可省略the, 主要句型有: the + 最高级 + in/of e.g. My mother is the busiest in my family. 疑问句+最高级， A, B or C? e.g. Which book is the most interesting，Lucys ,Lilys or Toms?the +序数词+最高级 表示“第几.” e.g. Huanghe is the second longest river in China.表示 “最之一” one of +最高级+复数名词 e.g. Huanghe is one of

25、the longest rivers in China.4.使用比较级和最高级的几个注意点 原级，比较级和最高级前的修饰词不可误用. 最高级后的介词in与of. a. in 表示“在内(指某范围内)” 可以跟表示单位,组织,时间等单数名词. e.g. in my family ,in our class, in China. b. of表示属性(指在同类的人,物中)后可接 the +基数词 / the +基数词+名词复数 / all +the +复数名词/all e.g. of the three, of the three boys, of all, of all the animals形容

26、词的最高级前要用the配套练习：I.改错1. Lesson 9 is more easier than Lesson 10.2. My mother is younger than your.3. He is one of tall boys in his class.4. The boy doesnt draw much well.5. Betty is the youngest on the three girls.6. Tom runs faster than the other boy in his class.7. Mother is the busiest of my family

27、.8. Jim is shorter of the two boys.9. You can jump very higher on the moon than on the earth.II.单项选择：( )1.Jay Chou is one of _ singers in China? A. popular B.more popular C. the most popular ( )2.Changjiang River is the third _ cities in the world. A. long B. longer C. longest( )3.Which room do you

28、like _ ,this one or that one? A. well B. better C. best( )4.Who runs _ of the students? A. quick B. quicker C. most slowly( )5.Aunt Mary has _ money, but her husband has _. A. many；more B. much; more C. lots of; most( )6.The pen is than that one. A. more cheap B. quite cheaper C. much cheaper ( )7.I

29、ts too for you to do that. A. easy B. more dangerous C. harder ( )8.Linlin is _ girl in this class. A. beautiful B. more beautiful C. the most beautiful( )9.This story is _ of the two. A. exciting B. more exciting C. the more exciting( )10.Lucy is taller than any other _ in her class. A. girl B. a g

30、irl C.girls五巩固练习I.单项选择：( )1.-Guangan is a beautiful city, isnt it? -Yes. There are about two _ visitors here every week. A. thousands of B. thousands C. thousand ( )2.You can choose to watch TV at home_ go shopping with me. A. and B. but C. or( )3. Farmers have become _ in our hometown recently. A. mo