(2)比較級重難點(diǎn)知識講解

1、 形容詞的比較級和最高級重難點(diǎn)知識講解：形容詞的比較級和最高級一、比較級的定義：大多數(shù)的形容詞都有三個(gè)級別：原級、比較級、最高級。其中比較級表示“更”，用于兩者之間的比較，用來說明“前者比后者更”，比較級前面一般用much, even, a little修飾，其中even, much 只能修飾比較級。二、比較級和最高級的構(gòu)成：（1）規(guī)則變化：單音節(jié)和部分雙音節(jié)的形容詞一般在詞尾加-er, 最高級加est calm-calmer-calmest     tall-taller -tallest  smart-smarter -smartest以字

2、母e結(jié)尾的直接在詞尾加-r , 最高級加est  nice-nicer-nicest    fine-finer-finest   large-larger -largest以“輔音+y 結(jié)尾的詞，變y為 i，再加-er” , 最高級加est early-earlier -earliest    happy-happier  -happiest busy-busier-busiest以重讀閉音節(jié)的單個(gè)輔音字母結(jié)尾的詞，雙寫輔音字母，再加-er, 最高級加est  b

3、ig-bigger -biggest  thin-thinner-thinnest hot-hotter-hottest多音節(jié)或部分雙音節(jié)的形容詞在原級前面加more，最高加most  Eg: popular-more popular- most popular important-more important- most important（2）不規(guī)則變化：少數(shù)形容詞的比較級變化是不規(guī)則的：good-better   bad/ill-worse   many/much-morelittle-less &

4、#160; far-farther/further   old-older/elder三、比較級的用法:(一)當(dāng)兩個(gè)人或事物（A和B）進(jìn)行比較時(shí)，我們需要用到形容詞（副詞）的原級或者比較級1 表達(dá)“A和B一樣”，用asas的結(jié)構(gòu)。公式: A+be動詞+as+形容詞原級+as+B    A+實(shí)義動詞+as+副詞原級+as+BEg   I am as tall as you.我和你一樣高。     He runs as fast as I. 他跑得和我一樣快。2表達(dá)“A不如B”用

5、not asas的結(jié)構(gòu)。公式:  A+be動詞的否定形式+as+形容詞原級+as+B      A+助詞的否定形式+動詞+as+形容詞原級+as+BEg  I am not as tall as you.我沒有你高。    He doesnt run as fast as I. 他沒有我跑得快。2 表達(dá)“A大于B”用“比較級+than”的結(jié)構(gòu)。公式:  A+be動詞+形容詞比較級+than+B A+實(shí)義動詞+副詞比較級+than+BEg  I am tal

6、ler than you.我比你高。    He runs faster than I. 他跑得比我快。(二)關(guān)于形容詞、副詞比較級的更多用法1比較級前面可以加上表示“優(yōu)劣程度”的詞或短語，意思是“更”，“得”。常見詞有much, a little, even, a lot, a great deal等。Eg   He is much taller than I.他比我要高得多。 I jump a little higher than he.我跳得比他高一點(diǎn)點(diǎn)。想一想，這些詞能修飾形容詞或副詞的原級嗎？2.比較級前面可以加上表示具體數(shù)

7、量差別的結(jié)構(gòu),表示具體“大多少”，“小多少”，“長多少”，“短多少”等。Eg   I am two years older than he.我比他大兩歲。This building is 20 meters higher than that one.3“比較級+and+比較級”表示“越來越”。    It is getting warmer and warmer天氣越來越暖和。He is running faster and faster他跑得越來越快。0ur country is becoming more and more beautifu

8、l我們祖國越來越美了。4“the more， the more”表示“越，就越”，The more，the better.多多益善。The more careful you are,the fewer mistakes you will make.你越細(xì)心，犯錯(cuò)就越少。5“the moreof the two”表示“兩個(gè)當(dāng)中較。的一個(gè)”  The taller of the two boys is my brother.四、當(dāng)三個(gè)或三個(gè)以上的人或事物進(jìn)行比較時(shí)，我們需要用到形容詞（副詞）的最高級1表達(dá)“是中最的”,用“the+形容詞（副詞）的最高級”的結(jié)構(gòu)。后面可以加上表示范圍的介詞

9、短語或從句。公式：主語+be動詞+the +形容詞最高級+（名詞）+表示范圍的介詞短語或從句主語+實(shí)義動詞+（the） +形容詞最高級+表示范圍的介詞短語或從句Eg   He is the tallest (student) in our class.    He jumps the highest of the three boys.  This is the best book that I have ever read.2表示“最的中一個(gè)”，用“one of +the +最高級+復(fù)數(shù)名詞”的結(jié)構(gòu)來表達(dá)。Eg  

10、; He is one of the best students in our class.他是我們班最好的學(xué)生之一。This is one of the most beautiful flowers in the garden.這是花園里最漂亮的花之。注意：(一) 形容詞的最高級前面有定冠詞the , 而副詞的最高級前面定冠詞the可以省略。但在形容詞最高級前有物主代詞時(shí)，不能要定冠詞the.（二）常見的用來表示范圍的介詞有in, of, among五、運(yùn)用形容詞、副詞比較級應(yīng)當(dāng)注意的問題： (一)、按語法規(guī)則，than后面的人稱代詞應(yīng)當(dāng)用主格，但口語當(dāng)中有時(shí)會用賓格代替主格。 

11、Eg   He is more careful than I (me).(二)、只有同類的事物才能比較   e.g     Her bag is bigger than mine.  不能說 Her bag is bigger than I.The weather of Kunming is much better than that of Shenyang.不能說The weather of Kunming is much better than Shenyang.【語法專項(xiàng)練習(xí)題】( )1、That

12、boy looks as_ as a boxer.A. strong    B. stronger    C. strongest    D. more strong( )2、Then Summer Palace is _ than Zhong Shan park.A. biger    B. more big    C. the biggest    D. bigger( )3、Whi

13、ch do you like _ , apples or oranges?A. good    B. better   C. best    D. well( )4、-Oh, the food is bad.    -I think so .And the service(服務(wù)) is _. Athe worst     B.  worse   C.  badder  

14、0;  D.  the worse( )5、-You are the same coat as I.   -Yes, Mine is _  , but not so _ as yours.A. better, expensive             B. better, more expensive    C. much better, more expensiv

15、e    D. good, more expensive( )6、The experts think that Indias population may be_ than Chinas_2020.A. much, by     B. more, in    C. larger, by    D. larger, on( )7、This year our school is_  than it was last year.A. much beau

16、tiful    B. the most beautiful    C. beautifuler    D. much more beautiful( )8、_  you work,_   knowledge you will get.A. The harder, more    B. The harder, the more    C. Harder, the more   

17、 D. Harder, more( )9、He has _ friends than I.A. much more    B. many more    C. very more    D. too more( )10、She draws better than      .A. us all    B. we all    C. all us   

18、; D. all we( )11、Shanghai is larger than _  city in China.    A. any   B. any other   C. the others   D. any else( )12、Im not sure whether Mary can sing      Ann.A. as well as   B. as good as   C

19、. as better as    D. so good as( )13、I have fewer apples than _ .A. he   B. his   C. hers    D. mine( )14、The news is _  surprising.A. much   B. very   C. more    D. very much( )15、The population

20、 of China is larger than _ .A. America   B. the one of Americas   C. that of America   D. Americans( )16、Which is _clothing store in your town?     A. the best          B. the better  &

21、#160;     C. the most good      D. best( )17、My sister is _person I know.    A. the funniest         B. the funnier       C . the most fun      D

22、. funniest( )18、Is Mr Du _ teacher in your school?A. the most busy    B. the busier   C. the most busiest   D. the busiest( )19、He is _more beuutiful than I.A. too           B. enough     &#

23、160;  C. much        D. very( )20、The box is _heavy .I cant move it.A. much          B. more         C. enough      D. too()21、The book is the_one in the bookshop    Athe most cheap       Bthe expensive    Cthe most expensive    Dthe less expensiver（）22、I have _ apples and _milk than you.A. man