三四单元重难点复习及习题

1、1、 规则变化 单音节词和少数双音节词，加词尾-er，-est来构成比较级和最高级。构成法原级比较级最高级一般在原级末尾加-er，-est tall greattallergreatertallestgreatest以不发音的e结尾的单音节词词只加-r，-st nice large nicerlargernicestlargest以一个辅音字母结尾的闭音节单音节词，双写结尾的辅音字母，再加-er，-est Hotbig fat thin(瘦）/ Hotter bigger fatter thinnerhottestbiggestfattestthinnest “以辅音字母+y”结尾的双音节词，

2、改y为i，再加-er， -est easy Busyhappy/funny/early/ easierBusiereasiestbusiest其他双音节词和多音节词，在前面加more，most来构成比较级和最高级(另外由形容词构成的副词比较级都是在前面加more，由过去分词转化而成的形容词，比较级都是在前面加more)。BeautifulHard-workingOutgoingLoudlytiredMore beautifulMore hard-workingMore outgoingMore loudlyMore tiredMost beautifulMost hard-workingMos

3、t outgoingMost loudlyMost tired 2、不规则变化原级比较级最高级Good/wellbetterbestBad /badlyworseworstold（老的）older/elderoldest/eldestmany/much（多的）moremostlittle（少的）lessleastfar（远的）farther(距离更远的）Further(程度更近一步）farthestfurthest一、形容词的原级1、 用“as+形容词+as” 例如：Tara is as quiet as Sam Nelly speaks as quietly as Larry2、 否定句用“

4、not so+形容词+as”句型. Tara is not so tall as Sam Nelly speaks not so quietly as Larry二、形容词的比较级(一)、比较级的用法总结： 1、比较级的标志是than,形容词和副词的比较级前，可用 much, even,a little ,a lot 修饰 2、 当A 和B做比较时时，用“A+ 谓语动词+ 比较级+ than B”Tara is taller than Sam Tara is more outgoing than SanNelly runs faster than Larry Nelly has longer

5、hair than Larry 3、“越来越” 比较级and比较级”。worse and worse. 多音节比较级用“more and more形容词原级”形式。如： more and more popular4、 The+比较级。，the+比较级 越。，越。The earlier,the better5、 比较A、B两事物, Which is taller,A or B6、 Bettys hat is bigger than mine=my hat三、最形容词的最高级1、 三者或三者以上比较，一般有表示范围的词组，比如 in our class, of the three 等词组出现时用最

6、高级 例如：Tom is the tallest of the three He runs the fastest in our class 形容词最高级前通常必须用定冠词 the，the+最高级，例如：Sun Cinema is the biggest movie theater in the world 太阳电影院是世界上最大的电影院。 2、 使用最高级时候，注意以下几点;表示“最之一”，用one of the+最高级+名词复数 He is one of the tallest students in our class 他是我班最高的学生之一Shanghai is one of the

7、biggest cities in China.上海是中国最大城市之一。 “the+序数词+最高级 第二长” The Yellow River is the second longest river in China当最高级前有“的”时，最高级前不加the my best friend Which is the tallest, A ,B or C?对比Which is taller,A or B? 1. My brother is two years _(old)than me.2. Tom is as _(fat) as Jim.3. Is your sister _(young) tha

8、n you? Yes,she is.4. Who is _(thin),you or Helen? Helen is.5. Whose pencil-box is _(big),yours or hers? Hers is.6. Marys hair is as _(long) as Lucys.7.Ben _ (jump) _ (high) than some of the boys in his class.8._ Nancy sing _ (well) than Helen? Yes, she _. 9.Fangfang is not as _ (tall) as the other g

9、irls.10.My eyes are _(big) than _ (she). 11.Which is _(heavy),the elephant or the pig?12.Who gets up _(early),Tim or Tom? 13._the girls get up_(early) than the boys?No,they_.14. Jim runs _(slow). But Ben runs _(slow).15.The child doesnt_(write) as _(fast) as the students.1、The Changjiang River is th

10、e_(long)river in China.2、Annie says Sally is the _ (kind) person in the world.3、Toronto is _ city in Canada. (large)4、Playing computer gamesis_ of all the activities.(interesting).5、He is _（tall） of the three.6、Which lesson is _ (difficult) in the Book ?7、That is _(easy) of all.1、 He is one of the_(

11、friendly) people in the class, I think.2、 The Yellow River is one of _rivers in China. Along B longer C the longest D、longest1、Chang Jiang River is the _ in the worldA、 third longest B、Three longestC、 third long D、third longer2、China is _ country in the world.A. the third largest B. the largest thir

12、d C. the third large D. a third largest4、The Changjiang River is one of _ in the world.A. the longest river B. longest riversC. the longest rivers D. longer rivers1、 - Which is_ , the sun, the moon or the earth?- Of course, the moon is.A.smallB.smallerC.smallestD.the smallest2、Which movie theater ha

13、s _(friendly) service, Town Cinema, Screen City or Movie Palace?3、Who has _ oranges now, Jim, Lily or Lucy?A. much B. biggest C. Better D. the most4、Whos _(careful), Tom,Jim or Kate? 练习1、The air in Beijing is getting much _ now than a few years ago.A. cleanB. cleanerC. cleanestD. the cleanest2、Mobil

14、e phones are very popular now and they are _ than before.A. cheapB. cheaperC. cheapestD. the cheapest3、I study English as_as my brother.A.hardB. harderC. hardest4、She learns English _ than her sister.A. good B. better C. best5、The_ you work, the more you will learn.A. hard B. harder C. Hardest 4、The

15、 city is becoming _.A. more beautiful and moreB. more beautiful and beautifulC. more and more beautifulD. more beautiful and beautifuler5、Mother is _ in my family.A. busy B. busier C. the busiest D. more6、This book is_ that one， but_ than that one.A. as difficult as; expensive B. as more difficult as; more expensiveC. as difficult as; more expensive D. more difficult as; as expensive7、I think the story is not so _ as that one.A. interesting B. interested C. more interesting D. most interesting二、2.Alice writes _(carefully ) than I.3.This story is _( in