《比較級和最高級》PPT課件

英語專題： 形容詞的比較級和最高級 專題：形容詞，副詞比較級、最高級 (一 ) 1. 形容詞，副詞比較級和最高級的概念。 形容詞和副詞可以靠改變形式來表示程度的 不同。我們把這種變化形式叫做比較等級。 要比較兩個或兩個以上的人或物時，就必須 用形容詞的比較級和最高級。 形容詞、副詞有三個級：原級 (Positive Degree)，比較級 (Comparative Degree)和最 高級 (Superlative Degree)。 寫出下列詞的反義詞 tall- thin- long- funny- Sad- short heavy short serious happy 形容詞的比較級和最高級的構成方法 ： 單音節(jié)和少數(shù)雙音節(jié)形容詞、副詞的規(guī)則變化情況： a. 在原級的詞尾加 -er變?yōu)楸容^級，加 -est變?yōu)樽罡呒墶?e.g. short(原級 )-shorter(比較級 )-shortest(最高級 ) long(原級 )-longer(比較級 )-longest(最高級 ) b. 如原級以 e結尾，則比較級只加 -r，最高級只加 -st。 e.g. large-larger-largest nice-nicer-nicest c. 如原級以“輔音字母 +y”結尾，要將 y改為 i，再加 -er， -est。 e.g. busy-busier-busiest easy-easier-easiest d. 原級以重讀閉音節(jié)結尾，而且末尾只有一個輔音字母 (不 含字母組合 er等 )，要雙寫這個輔音字母，再加 -er， -est。 e.g. fat-fatter-fattest big-bigger-biggest 2. 其他雙音節(jié)詞和多音節(jié)詞都在前面加 more, most構成比較級及最高級： 原級 比較級 最高級 important more important most important difficult more difficult most difficult interesting more interesting most interesting useful more useful most useful serious- beautiful- interesting- important- difficult- good delicious- More serious more beautiful more interesting more important more difficult better more delicious 寫出下列詞的最高級形式 tall- bad - friendly - little- old- tallest worst the most friendly least oldest 3. 形容詞比較級的用法和相關句型。 表示兩者“相等”用“ as+形容詞原級 +as+比較對象”。 e.g. He is as tall as his mother English is as interesting as math. 表示“不如”或“不相等”用“ not +as so+形容詞原級 +as+比較對象”。 e.g. It is not so as cold today as yesterday Jack is not so/as tall as Tom. 表示倍數(shù)，如“一半兩倍 /3倍 4倍 ” 等用“ half twice three four times +asas” 結構。 e.g. I study twice as hard as you This room is three times as large as that one. 用“形容詞比較級 +than引導的從句”進行兩者的比較。 e.g. The earth is bigger than the moon This dress is more expensive than that one. 強調比較級超出比較程度時，形容詞的比較級前 可用 much， far， a lot， no， a little， even， any,等 狀語來修飾。 e.g. My brother is much older than I. This bike is far better than that one. 由 and連接同一個形容詞的兩個比較級，可以表 示“越來越 ” 。 e.g. I think English is becoming more and more difficult. 用“ the+比較級 +the+ 比較級 ” ，表示 “越 就越 ” 。 e.g. The more you read， the more knowledge you will get The less junk food you eat, the healthier you feel. 比較級 + of the two 表示兩者中較 的（比 較級前加 the） John is the clever of the two boys. Of the two boys, John is the clever. 最高級 +of 或 in 表示 中最 的 Eg: Jack is the tallest in their class. China is the largest one of all the Asian countries.(注意一定地域空間用 in，一類事物 范圍內用 0f) a+最高級表示“非?！?， the+最高級表示 “最”。 This is a most difficult question. This is the most difficult question. 比較要同類，在同一范圍內，排除自身的方 法用 other，在不同的范圍內，不用 other. Shanghai is larger than any other city in China.=Shanghai is the largest city in China. Shanghai is larger than any city in Inida. 1. My brother is two years _(old)than me. 2. Tom is as _(fat) as Jim. 3.- Is your sister _(young) than you? -Yes 4. Who is _(thin),you or Helen? Helen is. 5. Lucy is the_(good) student in our class. 6. Marys hair is as _(long) as Lucys. 7. Which is _ (big),the sun ,the moon or the earth? 8. Who is _ (tall),Tom or Sam? 9.Fangfang is not as _ (tall) as the other girls. 10.My friends are _(many) than _ (she). 練習：單選題 fat younger thinner best long the biggest taller tall more older hers 三 單項選擇。 1.Alan is_ than Linda. A. tall B. taller C. tallest 2. -She is _ than her mother. -Her mother is also beautiful. A. beautiful B. beautifuler C. more beautiful D. the most beautiful 3. -Do you always get up as _ as you brother? -Not always. A. earliest B. earlier C. the earliest D.early 4. He is _more beautiful than I. A. too B. enough C. much D. very B C D C 5. This book is _ that one. A. as better as B. as good as C. as best as 6. The earth is_ the moon. -I also saw it on the newspaper. A. as 49 times big as B. 49 times as bigger as C. 49 times as big as D. as big as 49 times 7. -It looks like that he is as _ as you. -Oh, no. He is _ than I. A. tall, a little tall B. taller, a little tall C. tall, a little taller D. taller, a little taller 8.-Thanks for taking care of the garden, it is becoming _. -You are welcome. A. more beautiful and more B. more beautiful and more beautiful C. more and more beautiful B C C C 9. The box is _ heavy .I cant move it. A. much B. more C. enough D. too 10. Her brother is _ than she. A. seven year older B. seven year older C. seven years old D. seven years older 11. The_you stand,the _ you can see. A. high; far B. higher; farther C. highest; farthest D. more higher; more farther 12.You should study English hard, because its getting_ in our country . A. more and more important B. more important and more important C. importanter and importanter D. important and important D D B A 13. _you learn ,_ you will learn. A. harder, better B. the harder, the good C. the harder, the better 15. Who is _ student in your class? A. good B. better C. best D. the best C D 改錯 1. Lesson 9 is more easier than Lesson 10. 2. My mother is younger than your. 3. He is one of longest boys in his class. 4. The boy doesnt draw much well. 5. Betty is the youngest on the three girls. 6. Mother is the busiest of my family. 7. You can jump very higher on the moon than on the earth. yours the longest very of in much Do some exercises 同義句轉換 1. He is the tallest student in his class. He is _ _ _ _ student in his class. He is _ _ _ _ students in his class. 2. Peter draws well, Lilei draws better. Lilei draws _ of the two. taller than any other taller than the other better D D