比较级的详细用法.ppt

形容词的比较级,Jack is heavy .,Guo Shanshan is heavier than Jack.,Jack,Guo Shanshan,Li Yong is funny.,Pan Changjiang is funnier than Li Yong.,Li Yong,Pan Changjiang,Liu Yifei is thin.,Mr. Wang is thinner than Liu Yifei .,Liu Yifei,Mr. Wang,在对两者进行比较时，形容词要采用比较级形式。形容词比较级之后多用than引出比较的对象。 即：比较级 + than，than后面连接另一个作比较的人或物。,概念及结构,形容词比较级,1. 比较级的构成 单音节词和少数双音节词，在词尾加er。 单音节形容词比较级变化口诀： 比较级要变化，一般词尾加er。 词尾若有哑音e，直接加r就可以。 一般重读闭音节，末尾辅音须双写。 辅音字母加y型，变y为i加er。 多音节有规则，原形前面加上more。,二、不规则形容词的比较级最高级,注：older 一般指年龄大小； My father is older than my mother. elder指长幼关系(一般修饰名词作定语); My elder brother is a driver. farther指距离更远； further指抽像的. I want to study English further. further reading,用所给的形容词副词的适当形式填空。 1. Tom is _ (tall) than Jim. 2. Li Lei is _ (young) boy in his class. 3.David has _ (many)story books of all the students. 4.Li Lei speaks English _ (well) in his group. 5.Lucy runs _ (slow) than Lily.,taller,the youngest,the most,the best,slower,改正下列句子中一处的错误。 A Tom comes to school late than Jim._ B. Which do you like better , cats ,dogs,or chickens? _ C. Who is oldest in our class? _ D. He thinks math is importanter than Chinese._ E. This work is very harder than that one._ F.He lives farer than any other student in your class._,very+原形，very-much,比较级的运用,1. A + be + 比较级 + than B。表示“A比B更” eg: I am taller than Li Lei. This room is bigger than that one. 练习： 我的自行车比你的新。 My bike is newer than your bike. My bike is newer than _. 注：比较必须在同类事物之间进行。,yours,比较级中的代替词,1. that：代替前文中的单数名词或不可数名词。 eg: The engine of your car is better than _ of mine. The population of China is larger than _ of America.,the engine,that,the population,that,2. those：代替前文中的人或物的复数名词。 eg: The girls in your class are more beautiful than _ in ours. The ears of a rabbit are longer than _ of a cat.,those,those,2. A + be + 数词 + 名词 + 比较级 + than B. eg: Tom is two years older than I. Nancy is three years younger than Sam. 练习： 长江比黄河长1000千米。 The Changjiang River is 1000 _ _ _ the Yellow River. 姚明比我高1米。 Yaoming is 1 _ _ _ I.,3. “比较级 + and + 比较级”表示“越来越，又又”。 eg: It is getting warmer and warmer. You are taller and taller. 练习： In winter the weather is getting _ _ _.(越来越冷) I hope you will be _ _ _.(越来越聪明) The life for us is becoming _ _ _.(越来越好),注：在运用“比较级 + and +比较级”时，如果遇到多音节的形容词，如：beautiful，其比较级是more beautiful，“越来越漂亮”more beautiful and more beautiful，应该表达为：“more and more beautiful”。 即：more and more +多音节形容词。 练习： The questions are _ _ _ _.(越来越难) The cars are _ _ _ _.(越来越贵) Computers are _ _ _ _.(越来越重要),4. “The+比较级+主语+动词，the+比较级+主语+动词”表示“越，就越”。 eg: The harder you study, the better you are. The more you eat, the fatter you are. 练习： 我们种植越多的树木，空气就会越新鲜。 _ _ trees we plant, _ _(fresh) air we will have.,5. 相同程度比较的句型：as + 形容词或副词原形 + as，表示“与一样”。 eg: Jack is as tall as Peter. This dress is as espensive as that one. He runs as fast as I. 练习： 1. This bridge is _ _ _(和一样长) that one. 2. My dad is _ _ _(与一样大) my mum.,拓展： A + 数词 + time(s) + as . as + B。表示“A是B.几倍。” eg: My house is three times as big as yours. 这棵树的高度是那棵树两倍。 This tree is _ that one. HJX的体重是Mr. Wang的十倍。 HJX is _ Mr. Wang.,twice as tall as,three times as heavy as,A+be+the+形容词比较级of the two A是两者中较,她是两个女孩中较美丽的。 She is the more beautiful of the two.,比较级前的修饰语,在英语中常修饰比较级的词有：much, a little, a bit, even, far等。 eg: The sun is much bigger than the moon. I am a little taller than Sam.,小贴士： 哪些词后用形容词原形