1、 形容詞和副詞比較級的變化規(guī)則興隆莊鎮(zhèn)桲欏樹小學 董廣 直接加er雙寫最后一個字母加er 在單詞末尾加r去y變i加er不規(guī)則變化oldolderbigbiggerlatelaterheavyheaviergoodbetter1一般單音節(jié)詞和少數(shù)以-er，-ow結尾的雙音節(jié)詞，比較級在后面加-er，最高級在后面加-est；（1）單音節(jié)詞如：smallsmallersmallest shortshortershortest talltallertallest greatgreatergreatest（2）雙音節(jié)詞如：clevercleverercleverest narrownarrowernar

2、rowest 2以不發(fā)音e結尾的單音節(jié)詞，比較在原級后加-r，最高級在原級后加-st；如：largelargerlargest nicenicernicest ableablerablest3在重讀閉音節(jié)（即：輔音元音輔音）中，先雙寫末尾的輔音字母，比較級加-er，最高級加-est；如：bigbiggerbiggest hothotterhottest fatfatterfattest4以“輔音字母y”結尾的雙音節(jié)詞， 把y改為i，比較級加-er，最高級加-est；如：easyeasiereasiest heavyheavierheaviest busybusierbusiest happyh

3、appierhappiest5其他雙音節(jié)詞和多音節(jié)詞，比較級在前面加more，最高級在前面加most；如：beautifulmore beautifulmost beautifuldifferentmore differentmost different easilymore easilymost easily注意：（1）形容詞最高級前通常必須用定冠詞 the，副詞最高級前可不用。例句： The Sahara is the biggest desert in the world. （2） 形容詞most前面沒有the，不表示最高級的含義，只表示"非常"。 It is a m

4、ost important problem. =It is a very important problem. 6有少數(shù)形容詞、副詞的比較級和最高級是不規(guī)則的，必須熟記。如：goodbetterbest wellbetterbestbadworseworst illworseworstoldolder/elderoldest/eldest many/muchmoremost littlelessleast far further/farther furthest/farthest二、形容詞、副詞的比較級和最高級的用法1“A + be +形容詞比較級 + than + B” 意思為“A比B更”。

5、如：This tree is taller than that one. 這棵樹比那棵樹高。 注意： 在含有連詞than的比較級中，前后的比較對象必須是同一范疇，即同類事物之間的比較。 在比較級前面使用much，表示程度程度“強得多”。如：A watermelon is much bigger than an apple. very, quite一般只能修飾原級，不能修飾比較級。 2“比較級 + and + 比較級”或“more and more +原級”表示“越來越”如：It becomes warmer and warmer when spring comes. 春天來了，天氣變得越來越暖

6、和了。It is getting cooler and cooler.天氣越來越?jīng)鏊?。The wind became more and more heavily.風變得越來越大。Our school is becoming more and more beautiful. 我們的學校變得越來越美麗。3在含有or的選擇疑問句中，如果有兩者供選擇，前面的形容詞要用比較級形式。如：Who is taller,Tim or Tom? 誰更高，Tim還是Tom?4. “the +比較級, the+比較級”，表示“越越”。The more money you make, the more you spen

7、d.錢你賺得越多，花得越多。The sooner，the better. 越快越好。5. 表示倍數(shù)的比較級用法：. A is times the size /height/length/width of B. 如：The new building is three times the height of the old one.這座新樓比那座舊樓高三倍。(新樓是舊樓的四倍高). A is times as big /high/long/wide/large as B.如：Asia is four times as large as Europe.亞洲是歐洲的四倍大。(亞洲比歐洲大三倍). A

8、is times larger /higher/longer/wider than B.如：Our school is twice bigger than yours.我們學校比你們學校大兩倍。6.形容詞、副詞的最高級形式主要用來表示三者或三者以上人或事物的比較，表示“最”的意思。句子中有表示范圍的詞或短語。如：of the three, in our class等等。如：He is the tallest in our class. 他在我們班里是最高的。7."否定詞語+比較級"，"否定詞語+ so as"結構表示最高級含義。 Nothing is s

9、o easy as this. =Nothing is easier than this. =This is the easiest thing.8. 比較級與最高級的轉換： Mike is the most intelligent in his class. Mike is more intelligent than any other student in his class7.修飾比較級和最高級的詞1）可修飾比較級的詞.a bit, a little, rather, much, far, by far, many, a lot, lots, a great deal, any, sti

10、ll, even等。 . 還可以用表示倍數(shù)的詞或度量名詞作修飾語。 . 以上詞(除by far)外，必須置于比較級形容詞或副詞的前面。 注意： 使用最高級要注意將主語包括在比較范圍內。 (錯) Tom is the tallest of his three brothers. (對) Tom is the tallest of the three brothers. 2)下列詞可修飾最高級：by far, far, much, mostly, almost。 This hat is nearly / almost the biggest. 注意： a. very可修飾最高級，但位置與much不

11、同。 This is the very best. This is much the best. b. 序數(shù)詞通常只修飾最高級。 Africa is the second largest continent. 8.要避免重復使用比較級。 (錯) He is more cleverer than his brother. (對) He is more clever than his brother. (對) He is cleverer than his brother. 9.要避免將主語含在比較對象中。 (錯) China is larger that any country in Asia.

12、 (對) China is larger than any other country in Asia. 10.要注意對應句型，遵循前后一致的原則。 The population of Shanghai is larger than that of Beijing. It is easier to make a plan than to carry it out. 11.要注意冠詞的使用，后有名詞的時候，前面才有可能有名詞。 比較：Which is larger, Canada or Australia? Which is the larger country, Canada or Austr

13、alia? She is taller than her two sisters. She is the taller of the two sisters. 比較級的幾種主要句法1、問人的句法：（要用形容詞比較級）陳述句：SuHai is older than SuYang. 一般疑問句：Is Su Hai older than Su Yang? 特殊疑問句：Who is older than SuYang? 選擇性的特殊疑問句：Who is older, Su Hai or Su Yang?2、問物的句法：（要用形容詞比較級） 陳述句：His ruler is longer than he

14、r ruler. 一般疑問句：Is his ruler longer than her ruler? 特殊疑問句：Whose ruler is longer than her ruler? 選擇性的特殊疑問句: Whose ruler is longer, his or hers?3、問動作的句法：（要用副詞比較級） 陳述句：Mike jumps higher than Ben. 一般疑問句：Does Mike jump higher than Ben? 特殊疑問句：Who jumps higher than Ben? 選擇性的特殊疑問句: Who jumps higher, Mike or

15、Ben? 比較級句子中涉及到的人稱代詞和物主代詞的用法1、主格和賓格（原句） Mike is stronger than Nancy.（改一改）He is stronger than her.（原句） This man is taller than that man. (改一改) _is taller than_.（原句） Helen swims faster than Su Yang. (改一改) _swims faster than_.你能總結一下：什么時候用主格，什么時候用賓格嗎？2、形物和名物（原句） Liu taos bag is heavier than Yang Lings ba

16、g.(改一改) His bag is heavier than her bag. His is heavier than hers. 想一想：紅色部分分別是什么類別的物主代詞？（原句） Mr Greens desk is bigger than Miss Lis desk. (改一改) _desk is bigger than _desk. _is bigger than _.練 習一、語音 選出每組單詞中劃線部分讀音與其余三個不同的單詞。（ ）1、A、workerB、workbookC、wormD、doctor（ ）2、A、weightB、heightC、eightD、eighty（ ）3、

17、A、thanB、trafficC、lateD、animal（ ）4、A、nearB、yearC、bearD、hear（ ）5、A、moreB、workC、worldD、worm二、選擇填空。( ) 1.Are you as _ as your classmate, Xiao Ming? A. tall B. taller C. younger( ) 2._ Saturday morning, they went for a_ A. In, walk B. On, walk C. At, walking ( ) 3.This cat is _ than that one. A. thin B.

18、thinner C thiner( ) 4. Whose ruler is longer, _? A. yours or his B. your or his C. yours or her( ) 5. -What do your parents do after supper?-They take the _ dog for a walk. A. cute B. red C. well( ) 6.-_ your grandfather 80 years old? -Yes, he _. A. Is, does B. Are, is C. Is, is三、用括號里所給單詞的正確形式填空。Im

19、_ (tall) than David.Whos _ (young), you or your brother?Which is _ (long), Chang Jiang River or the Yellow River?Davids bag is _ (heavy) than _ (I).Gao Shan runs_(fast)than his brother.  Is your hair as _ (longer, long)as hers? Yang Ling' flies a kite_(highertaller)than David.My mum _

20、(says, say)Jimmy is also her child. I am three months _(minutesminute) youger than _.  (he, him)四、課文內容填空Last Sunday morning, Su Hai _ (go) for a walk in the park. She met Ben and his cousin Jack. They had a _ (chat). Jack was not the only _ (children) .He had a brother Jimmy. Thats a _ (cu

21、te) dog. Jack was 6 years old. Ben was _ (old) than him. Ben was also _ (tall) and _ (heavy) than him. Ben was as _ (old) as Su Hai. But he was _ (strong) than Su Hai. Su Hai had a _ (twins) sister Su Yang. Su Yang was twenty _ (minute) _ (young) than Su Hai. 五、完成閱讀理解，教師講評。Mr. White and Mrs. White work in the same hospital. They have two lovely girls. Their names are Lucy and Lily