高中英语比较级.ppt

1、一.形容词和副词比较等级的用法,1）原级比较：表示两者程度相同。用句型as+形容词/副词+as表示，否定名式为：not as/so+形容词/副词as。 如：,Dick is as tall as his brother. Tom speaks as quickly as his cousin. I have never seen a person as / so clever as he is.,2）比较级： A. 表示A超过B。此时使用形容词和副词的比较等级。如：,Our classroom is brighter than yours. Dogs run faster than rabbi

2、ts. I dont think math is more important than physics.,B. 表示A不如B。 用句型：less+形容词/副词的原级表示。如：,Rabbits ran less fast than dogs. Jenny is less clever than her sister. It rains less often here in autumn than in spring.,3）形容词和副词比较级的特殊用法 A. 越来越 如：,You are growing taller and taller. 你越长越高了。 English is becoming

3、 more and more important. 英语越来越重要了。,B. 越， 越 如： The harder you push, the more quickly that cart will move. 你越使劲推，车就越跑的快。 The more careful you are, the better you will do in the exam. 你越小心，就会考得越好。 The more you practice, the more fluently you will speak. 你练得越多，讲得就越流利。,C. 表示两者之中比较的一个，用of 引导，比较级前加上the。 如

4、： Jack is the taller of the two brothers. 杰克是兄弟两中较高的一个。 This is the bigger of the two rooms. 这个房间是两个中较大的一个。,D. no more than表示“只；不超过；不多于”，相当于only。如： His whole school added up to no more than one year. 他所接受的学校教育不过一年。 She has no more than one yuan in her pocket. 她兜里只有一块钱。,E. no morethan 表示“一样不”；而not mo

5、rethan则表示“不像那样”，相当于“not so as”。如： Hs is feeling no better than yesterday. 他觉得不比昨天好多少。,She is not more generous than her younger sister. 她不如她妹妹那样慷慨大方。 She is not so generous as her younger sister.,相当于：,F. no less than表示“多达， 那样多; 至少, 起码”, 相当于as much /many as, 蕴含这个数是大的；而not less than表示“不少于”, 不强调这个数的大小,

6、 只说明数据本身。如： I have no less than ten dictionaries. 我起码有10本字典。,蕴含“我的词典多”,I have not less than ten dictionaries. 我具有的词典不少于10本。,不含“我的词典多”的意思，只说明一个事实。,G. no less than表示“不比差；与同样地”， 相当于“as as”。 如： She is no less beautiful than her sister.,H. 不用比较级的形容词如：senior, junior, superior, inferior等。如： He is three yea

7、rs senior to me. 他比我大三岁。 Your knowledge of electronics is much superior to mine. 你对电子学的知识远远超过我。,I. 比较级的修饰语。这些修饰语通常为副词或短语，置于比较级前面， 说明比较级的程度。这些词有：a little, little, a bit, bit, a lot, a great deal, much, far, rather, slightly, by far, even, still, nearly, almost, any, just, ()times等。如：,The moon is much

8、 smaller than the earth. The result of the experiment turned out to be even better than expected. Speak a bit more slowly, please. The output of the paper mill is three times higher than it was last year.,二、英语中基数词、序数词、分 数、小数和百分数的读法,1. 基数词的读法：,A. 先说“几十”， 再说“几”，中间用连字符。如： 23 89,B. 先说“几百”， 再加and,再加末两位数（

9、或末位数）。如： 223 416 809,twenty-three,eighty-nine,two hundred and twenty-three,four hundred and sixteen,eight hundred and nine,C. 1000以上的数先从后向前数，每三位数加一“,”（千分位）；第一个“,”号前为thousand; 第二个“,”号前为million; 第三个“,”号前为billion。如： 1,001 4,000 9,743 174,301 750,000,000,one thousand and one,four thousand,nine thousand,

10、 seven hundred and forty-three,a (one) hundred and seventy-four thousand, three hundred and one,seven hundred and fifty million,2. 序数词的读法,序数词一般以与之相应的基数词加词尾-th构成，如：tenth（第十），但下面这些基数词在变序数词时， 有特别的地方。如：,A. one two three five eight nine twelve,first,second,third,fifth,eighth,ninth,twelfth,B. 以-ty结尾的词，要先变

11、-y为-i，再加-eth。如： twenty forty C. 以one, two, three, five, nine收尾的多位数词，要照第一条方法变。如： twenty-one twenty-two thirty-five ninety-nine a hundred and fifty-three ,twentieth,fortieth,twenty-first,twenty-second,thirty-fifth,ninety-ninth,a hundred and fifty-third,基数词表示分子，序数词表示分母，除了分子是“1”的情况外，序数词要用复数。如： 2/3 7/9 5

12、/12 ,one-fourth,two-thirds,seven-ninths,five-twelfths,two and three-fifths,thirty and seven-eighths,3. 分数词的读法,2,3,5,30,7,8,一些特殊的表达法, ,a / one half,a / one quarter,three quarters,4. 小数的读法,7.8 0.4 0.03 0.125 14.397,seven point eight,zero point four,zero point zero three,zero point one two five,fourtee

13、n point three nine seven,5. 百分数的读法 27% 45% 86% ,twenty-seven percent,forty-five percent,eighty-six percent,Exercise,1. That doesnt sound very frightening, Paul. Ive seen _. What did you like most about the film? A. better B. worse C. best D. worst,I. Choose the best answer.,2. The number of people p

14、resent at the concert was _than expected. There were many tickets left. A. much smaller B. much more C. much larger D. many more,3. He speaks English well indeed, but, of course, not_a native speaker. A. as fluent as B. more fluent than C. so fluently as D. much fluently than 4. It is reported that

15、the United States uses _energy as the whole of Europe. A. as twice B. twice much C. twice much as D. twice as much,5. Mary kept weighing herself to see how much _she was getting. A. heavier B. heavy C. the heavier D. the heavier,6. The house rent is expensive. Ive got about half the space I had at home and Im paying _here. A. as three times much B. as much three times C. much as three times D. three times as much,7. Our neighbour has_ ours. A. as a big house as B. as big a house as C. the same big house as D. a house