as用法系列

来源：高中英语教学交流
发布时间：2012-10-20 13:55:00
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内容提要：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用法系列（一）as在比较状语从句中应用

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.