八下Unit7SectionA3

1、 Whats the highest mountain in the world? Qomolangma. How high is Qomolangma? Its 8,844.43 meters high. Its higher than any other mountain. Which is the deepest salt lake in the world? The Caspian Sea is the deepest of all the salt lakes. Did you know that China is one of the oldest countries in the

2、 world? Yes, I did. Its much older than the US. 比较句比较句1.Shanghai is bigger than all the cities in Japan. any city 不同范围比较时，不加不同范围比较时，不加other. (any后接单数）后接单数）2. Shanghai is bigger than other cities in China. any other city统一范围内比较时，必须加统一范围内比较时，必须加other3. The population of Singapore is smaller than that

3、of China.比较内容和结构要对应一致，为避免重复，单比较内容和结构要对应一致，为避免重复，单数用数用that替代，复数用替代，复数用those替代。替代。For example1.The Yangtze River is longer than _ in Asia. 2.Its also longer than _ in Europe.A. any other riversB. any other riverC. other riverD. any riverE. all riversF. other riversG. any riversB , FD, E同一范围内比较，必须加同一范围

4、内比较，必须加other不同范围内比较，不能加不同范围内比较，不能加other2. The students in Class 8 works harder than _ Class 7. A. that inB. those inC. / D. that ofE. those of3. Kunmings weather is better than _. A. BeijingB. BeijingsBBeijings1. Our family has bought a car so we can travel _ than before.（2008陕西）陕西） A. most easily B

5、. less easily C. easily D. more easily 2. My father told me a story last night. It is _ one Ive ever heard.（2009陕西）陕西） B. the funniest B. funniest C. funnier D. the funnier DA3. The _ friends you have, the _ you will be.（2010陕西）陕西） A. more, happy B. many, happy C. more, happier D. many, happier 4. W

6、hen he heard a cry for help, he ran out as _ as he could.（2011陕西）陕西）A. hardly B. quickly C. finally D. slowlyCB5. This place is not big enough for Lucys birthday party. We should find a _ one.（2012陕西）陕西） A. big B. small C. bigger D. smallerC1. She is _ than _. A. busier / us B. busier / we C. more b

7、usy / us D. more busy / we 2. Jane is _ than Betty. A. less taller B. less tallest C. less tall D. not as tall 3. China is _ country in the world. A. the third largest B. the largest third C. the third large D. a third largest BAA4. Which is _ season in Beijing? I think its autumn. A. good B. better

8、 C. best D. the best 5. Which is _, the sun, the moon or the earth? The moon is. A. small B. smaller C. smallest D. the smallest DD6. I study English as _ as my brother. A. hard B. harder C. hardest 7. Which is _, a bicycle or a computer? A. expensive B. more expensive C. the most expensive 8. The Y

9、ellow River is one of _ rivers in China. A. long B. longer C. the longest ABC 1. To memorize the important phrases and sentences. 2. To make some sentences using as as, . times than, less than, more than大多数形容词有三个级。大多数形容词有三个级。 1. 原级原级:Structure : as . as. 像像.一样一样 e.g. Tim is as tall as Tom. 2. 比较级比较级

10、 (用于两者之间的比较用于两者之间的比较):Structure：形容词比较级形容词比较级 than . e.g. This box is bigger than that one. 3. 最高级最高级(用于三者或三者以上的比较用于三者或三者以上的比较):Structure: the + 形容词的最高级形容词的最高级of / in . e.g. Tom is the heaviest in our class. He is the most popular in our school. 规则变化规则变化 1) 一般情况下，一般情况下，单音节或双音节的形容单音节或双音节的形容词词/副词比较级副词比

11、较级er， 最高级最高级est。如。如:clever cleverer cleverest few fewer fewest small smaller smallest 等。等。 2) 以以e结尾的词结尾的词，比较级比较级r，最高级最高级st 即可。即可。 如：如：nice nicer nicest cute cuter cutest large larger largest 3) 以以辅音字母辅音字母y结尾的结尾的变变y为为ier或或est 如如: easy easier easiest happy happier happiest 再如：再如：early, busy, heavy, di

12、rty, lazy 也如也如此。此。 4) 重读闭音节，单辅音结尾的，重读闭音节，单辅音结尾的，双写这双写这个辅音字母个辅音字母er 或或 est的词：的词： fat fatter fattest thin thinner thinnest hot hotter hottest red redder reddest wet wetter wettest big bigger biggest 5) 多音节和部分双音节的词多音节和部分双音节的词需要在形容词需要在形容词原级前原级前more 构成构成比较级比较级，the most 构构成成最高级最高级。如：。如： beautiful more bea

13、utiful the most beautiful 又如又如: delicious, popular, important, interesting, expensive, creative双音节双音节的词如的词如: careful more careful the most careful useful more useful the most useful少数单音节词少数单音节词也是这样，如：也是这样，如： pleased more pleased the most pleased tired more tired the most tired b) 不规则变化：不规则变化： good b

14、etter best well better best bad worse worst many/much more most far farther farthest (距离远距离远) far further furthest (程度深程度深) old elder eldest (长幼长幼) old older oldest (年龄年龄)1.三者或三者以上相比，表示最高程度三者或三者以上相比，表示最高程度时，用时，用“the + 最高级最高级”的结构表示。的结构表示。这种句式一般常有表示比较范围的介这种句式一般常有表示比较范围的介词短语。例如：词短语。例如：Zhang Hua is the

15、tallest of the three.He works (the) hardest in his class.2. 最高级可被最高级可被序数词序数词以及以及 much，by far，nearly，almost，by no means，not quite，not really，nothing like 等词语所修饰。等词语所修饰。例如：例如：This hat is by farmuchnearlyalmostnot nearlyby no meansnot quitenothing like the biggest. How much did the second most expensive hat coat?3. 表示表示“最高程度最高程度”的形容词，如的形容词，如 excellent，extre