在英语语法中,as是一个十分常用的词汇,它可以用来引导多种从句,这些从句在句子中充当不同的角色。下面将简单介绍as引导的几种从句。
- as引导方式状语从句
as可以用来引导方式状语从句,表示某个动作的方式或方法,通常放在主句之后,用逗号隔开。例如:
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He speaks English as if he were a native speaker.(他说英语的方式就像是母语一样。)
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She danced as if she were flying.(她跳舞的样子就像在飞翔。)
- as引导原因状语从句
as也可以用来引导原因状语从句,表示某个行为的原因。例如:
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As it was raining heavily, we decided to stay at home.(由于下大雨,我们决定呆在家里。)
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He didn't go to work as he was feeling sick.(由于感到不适,他没去上班。)
- as引导比较状语从句
as还可以用来引导比较状语从句,表示两个事物之间的相似性。例如:
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As a teacher, she is very patient.(作为一名教师,她非常有耐心。)
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He ran as fast as a cheetah.(他跑得像一只猎豹一样快。)
- as引导定语从句
as还可以用来引导定语从句,修饰某个名词或代词。例如:
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The book, as I expected, was very interesting.(正如我所预料的那样,这本书非常有趣。)
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She is not as intelligent as her sister.(她不如她姐姐聪明。)
以上就是as引导的几种从句,它们在英语语法中的使用频率非常高,需要我们多加注意和练习。