as 的用法汇总

as简单之至的一个单词,用法却非常复杂.我会陆续分类收集整理,如果能对大家有所裨益,我将颇感欣慰.

as用法一.两种事物的同种属性进行比较,as中间是形容词或副词,结构如下:

事物A+谓语+as/so+adj（形容词）/adv（副词）+as+事物B

注:肯定句用as,否定句用as/so均可. 它们是adv（副词）用来修饰其后的adj（形容词）/adv（副词）,as是连词用来连接事物B.

例句分析:

1.She is as beautiful as her sister.   她和她姐姐一样漂亮.

造句步骤1.先写句子 她漂亮 She is beautiful.肯定句在形容词前加as,所以句子为:She is as beautiful.

步骤2.找比较对象她姐姐 her sister,并在其前加as,所以为:as her sister

步骤3.将1和2连起来完整句子为 She is as beautiful as her sister.

2.She doesn't study as/so hard as her sister.她不如她姐姐学习用功.

造句步骤1.先写句子 她学习不用功 She doesn't study hard. 否定句在副词前加as/so,所以句子为:She doesn't study as/so  hard.

步骤2.找比较对象她姐姐 her sister,并在其前加as,所以为:as her sister

步骤3.将1和2连起来完整句子为 She doesn't study as/so hard as her sister.

as用法二.事物A+谓语+倍数+as/so+adj（形容词）/adv（副词）+as+事物B

倍数词:once,twice,three times,four times...half , 基数词+序数词（基数词大于1,序数词后加+s）来表示几分之几, 三分之一one third,三分之二two thirds,

例句  My books are twice as many as yours.我的书是你的两倍多.

as用法三.两种事物的同种属性进行比较,as中间是名词,结构如下:

事物A+谓语+as+adj（形容词）+a+n（名词）as+事物B

例句分析:

She is as clever a child as my sister.  她和我妹妹一样是聪明的孩子.

造句步骤1.先写句子 她是个聪明的孩子.She is a clever child .as只修饰形容词,不能修饰a,所以a,clever交换位置,as放在clever前,所以句子为:She is as clever a child

步骤2.找比较对象我妹妹 my sister,并在其前加as,所以为:as my sister

步骤3.将1和2连起来完整句子为:She is as clever a child as my sister.

as用法四.主语+谓语+as+adj/adv+as one can（could）/possible.尽可能......

例:I read the book as carefully as I can.我尽可能认真地看这本书.

注:以上几种用法均是形容词,副词原级比较从句,事物B都省略了与事物A后相同谓语部分,one can 后也省略了与谓语相同部分.

as用法五.同种事物的两种不同属性,则无比较含义,只说明这种事物具有两种属性,肯定句意为又......又......,不但......而且......,  ......而,却......句子结构为:

句子A+谓语+as+adj（形容词）+as+句子B

例句分析:

1.She is as clever as she is beautiful. 她既聪明又漂亮.

造句步骤1.先写句子 她聪明 She is clever.肯定句在形容词前加as,所以句子为:She is as clever

步骤2.再写句子她漂亮 She is beautiful.在句子前加as,所以句子为:as she is beautiful

步骤3.将1和2连起来完整句子为 : She is as clever as she is beautiful.

2.We are as poor as we are happy. 我们穷但我们快乐.

3.She is as beautiful as her sister is ugly.她长得漂亮,她妹妹长得丑.

造句步骤同1.不再赘述.

as用法六:主语+be+as+adj+as+同一adj can be.

例:as rich as rich can be   富得不能再富了

as poor as poor can be   穷得不能再穷了

as dirty as dirty can be 脏得不能再脏了

as bad as bad can be     坏得不能再坏了

as much as much can be   多得不能再多了

as用法七:as+adj+as+（数字）+名词

例:as many as five hundred students 多达五百学生

as long as five meters           长达五米

as wide as two meters            宽达两米

as tall as two meters            高达两米

as far as the station            远至车站

as late as two in the morning    迟至凌晨两点

as early as last week            早在上周

as easy as ABC 极其容易, as busy as bee 非常忙