as引导状语

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常用倒装语序,把从句中的表语、状语或动 词原形放在as之前,即adj. /adv. / n.+as + 主语+谓语+主句。如: Tired as they were, they walked on. Child as he is, he knows a lot. (child前不用 冠词)
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As a league member, i'll take the lead in everything. ( 状语)
She works as a doctor. (状语)
They have me as one of their own children.(引起宾语 补足语)
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五、含as的固定词组的用法
• 6.so/as far as I know作“就我所知”解,
在句中作插入语。eg: As/So far as I know,he will come here next Monday.
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• 7.as a result,as a result of表示“由

• 三、as 作副词
表示程度,意为“同样地” 用于as...as...或not so/ as...as...中,前一 个as是副词,后一个as是连词,引导比较状语 从句。
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• 四、 as作介词的用法:
as引导的介词短语大多用作状语,as译为"作为";少 数情况可引起宾语补足语。如:
• 1. 当先行词被the same, such等词修饰时,常用as来
引导定语从句。如: Such a clever boy as he can learn anything quickly.
• 2. 引导非限制性定语从句,用来指代它前面的整个
句子(即先行句),意思是“这一点”。这个分句可以 位于句首、句中或句末。如: As is well known,oceans cover more than 70% of the earth.
个as是副词,后一个as是连词,引导比较状语 从句。如: They helped the old man as often as possi ble. I don't speak english so/ as well as he does .
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• 5. 作"虽然"、"尽管"解,引导让步状语从句。
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• 4.as to作“关于,至于”解。eg;
There is no doubt as to his honesty.
• 5.as much/many as作“多达...”,
“达到...之多”解。eg: He can earn as much as 5000 dollars a month.

• ③ 但属下列情形时,只用as, 而不用when或
while。 a) 用于表示同一个人的两种动作交替进
行,指“一边……,一边……”。如: The girl dances as she sings on the stage.
b)表示两个同步发展的动作或行为,译为 "随着……"。如: As the sun rose the fog dispersed.

• 2. as=since, 作"既然"、"由于"解,引导原因
状语从句,常用来表示已为人们所知或显而 易见的原因或理由。如: As / Since you're not feeling well, you may stay at home. As he wasn't ready in time, we went witho ut him.
pron. conj.

引导时间状语从句 引导原因状语从句 引导让步状语从句

引导方式状语从句

as

adv.

引导比较状语从句

pr百度文库p.

引导定语从句

固定用法
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• 一、 as作关系代词,引导定语从句,作"正如"、"这一 点"解。如: He is very careful, as his work shows.
• 3.as if/though常用来引导方式状语从句,作“好像,
仿佛”解。如果从句中讲的是非真实情况,则用虚拟语气。 eg: She loves the child as if/though he were her own.
As if/though也可用来引导表语从句,常用在“It appears/looks/seems...+as if/though”句型结构 中。eg; It appears as if/though it is going to clear up.看起来 天要晴了。
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• 二. as做连词
1.作“当……的时候”,引导时间状语从 句。注意与when、 while的用法区别。
① when作"当……的时候"解,可以指较 短的(一点)时间,也可指一段时间。
② while常表示一段较长的时间或一个过 程,强调主句谓语动词与从句谓语动词同时 发生。
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• 3. as=in the way that, 作"像"、"按照……
的方式"解,引导方式状语从句。如: He speaks English as Americans do. When at Rome, do as Romans do.
• 4. 用于as...as...或not so/ as...as...中,前一
• 1.as soon as作“一…就”解,引导时间状语从句。eg:
As soon as I get to Beijing,I‘ll write to you.
• 2.as/so long as作“只要”解,eg;
As/So long as you study hard,you‘ll make progress.
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c)表示两个短促行为或事件几乎同时发生。 如: I thought of it just as you opened your mo uth. d) 后接名词表示某一年龄段时,用as。如: As a young man, he was active in sports.
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