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1、形容词和副词的比较级,八年级英语上册unit3,授课人：Mr.Li,一、形容词（adjective），副词(adverb)的定义,形容词是描述,修饰名词或代词,说明事物或人的性质或特征的词。eg.He is a good boy.副词在句子中修饰动词、形容词、其他副词或整个句子，用来表示时间、场所、状态及程度。eg.He studies hard.,大多数形容词和副词可以分为三个等级：1.原级，即原形。2.比较级，表示“较/比”或“更一些”的意思。3.最高级，表示“最”的意思。,二.形容词和副词的级,He is tall.他高。He is taller than I.他比我高。He is th
2、e tallest in my class.他是我班最高的。,1.表示两者(A与B)在某一方面相同时，用asas结构：A+be+as+形容词原形+as+Beg:Tom is as tall as Sam.Tom和Sam一样高。A+实义动词+as+副词原形+as+Beg:Tom runs as fast as Sam.Tom跑的和Sam一样快。,三.形容词和副词的原级,2.表示两者(A与B)在某一方面A不如B时，用not asas或者not soas结构：A+be+not+as/so+形容词原形+as+Beg:Tom isnt as tall as Sam.Tom不如Sam高。A+助动词(do/
3、does/did)+not+实义动词原形+as/so+副词原形+as+Beg:Tom doesnt run as fast as Sam.Tom不如Sam跑的快。Lucy didnt study so well as Lily last year.,四、形容词和副词的比较级的构成及用法,1.规则变化：(5种情况)2.不规则变化：,形容词和副词比较级的构成规则,outgoingmore outgoing,more interesting,不规则变化：,小贴士1.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
4、);My elder brother is a driver.2.farther仅表示距离更远；further 表示“较远”外，还可表示“进一步的”；I want to study English further.,表示两个人或事物(A与B),A比B更/较时，常用“比较级+than”的结构,A+be+形容词比较级+than+B.,我比他高。,I am taller,than he.,than I yesterday.,He came earlier,他昨天比我来得早。,A+实义动词+副词比较级+than+B.,两者(A与B)进行比较，表示“哪一个/谁 更/较”时Which/Who is+比较级
5、，A or B？”句型。Which one is more popular,the radio or the TV?收音机和电视，哪一个更流行？Who is smarter,you or your father?你和你父亲，谁更聪明？My father is.我父亲。注意：A or B，只能用or不能用and。,小贴士：在形容词和副词比较级的前面可以用：much(的多)、a little(一点儿)、even(更)、a lot(的多)、still（更）、a bit(一点儿)far(更)等修饰,This cake is much more delicious than that one,这个蛋糕比
6、那个蛋糕好吃的多。,Today is even hotter than yesterday.,今天比昨天还热。,五、形容词和副词比较级的常用句型,1.A与B进行比较，“A比B 大/长/高”A+谓语+数量词+形容词或副词比较级+than+BI am two years older than he.我比他大两岁 2.比较级+and+比较级“越来越”Now it is cooler and cooler.现在越来越凉快了注意：多音节的词用more and more+形容词或副词原形,3.the+比较级+the+比较级“越就越”The more you eat,the fatter you will
7、be.吃的越多，你将会变得越胖。注意：“the+比较级”修饰名词时，名词要紧跟在比较级之后。The more money he gets,the more he wants.他得到的钱越多就越想要。,4.A+谓语动词+the+比较级+of the two 意思是“A是两者中较的”。5.比较级还可以表示最高级的概念：A+be+比较级+than+any other+名词单数.=A+be+比较级+than+the other+名词复数/the others.=A+be+the 形容词最高级+名词单数+in/of.Tom is the tallest boy in his class.=Tom is
8、taller than any other boy in his class.=Tom is taller than the other boys in his class.,Amy is the shorter of the two students.,注意：当A在范围之内比较时，必须加other；当A不在范围之内比较时，要去掉other。A+be+比较级+than+any+名词单数.(不属于同一范围)Shanghai is bigger than any other city in China.(上海属于中国)Shanghai is bigger than any city in Japa
9、n.(上海不属于日本)He is taller than any girl.(他不属于女生的范围),“比较”出来的英语,A friend is easier lost than found.朋友易失不易得。2.Enough is as good as a feast.知足常乐。3.Better to do well than to say well.说得好不如干得好。4.Better the last smile than the first laughter.宁可最后微笑，不可首先狂喜。,5.Doing is better than saying.会说不如会做。6.Two heads are better than one.两人智慧胜一人。7.Good to begin well,better to end well.善始好，善终更佳。8.An eye finds more truth than two ears.百闻不如一见。,形容词原级的用法1、very、so、quite、too,pretty等词后用原级 2、too to;so that;as as 中间用原级A+be+not as/so+原级+as B A不及B,
