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as引导的是什么从句
as可以引导两种从句,一个表示原因引导原因状语从句,意思是"因为,由于",一个是表示时间的时间状语从句,意思是“当……的时候”,表示一个进展过程。
as引导的从句有哪些
As能引导大致5种从句
1、定语从句。
2、时间状语从句。‘当···时候’
3、方式状语从句。‘按照,如同’
4、原因状语从句。‘由于,鉴于’
5、让步状语从句。‘虽然,尽管’,而且引导让步状语从句是句子要倒装。
扩展资料:
as主要有两种词性,分别为介词和连词。as作为介词时,用法和语义较单一,其含义为“作为”。但是as作为连词词性时,其用法和功能较多,可以引导各类从句,而对其所引导的从句类型的识别也就成为了as理解的难点。在此对as引导各类从句进行汇总,并对各类从句的特点给出具体总结。
as引导的原因状语从句
as引导一个时间状语从句,相当于when,
while(当……的时候)。as在这种情况下表达两层意思。
1.主句谓语动词所表示的动作在从句谓语动词所表示的动作完成之前发生。例如:
as
i
left
the
house,
i
remembered
the
key.
离开房子时,我记得带钥匙。
2.主句谓语动词和从句谓语动词表示的是两个平行的动作。例如:
as
he
talked
on,
he
got
more
and
more
excited.他谈着的时候越来越兴奋。
此外,as
还能和
soon
及另一个
as
一起构成短语连词
as
soon
as
(一……就)来引导时间状语从句,起强调作用。例如:
he
started
as
soon
as
he
re-ceived
the
news.
他一听到消息就立刻动身了。
as怎么引导从句
1.As可以引导定语从句.有时可译为“正如”.此时,常常是as从句在前,主句在后.
例如:As we can see,he is a Chinese.
2.As 还可引导原因状语从句,“因为,由于”
例如:As he is so lazy,he never cooks by himself.
3.As还可引导时间状语从句,“当,随着”
例如:As the weather is colder and colder,the leaves of the tree is less and less.
4.As还可引导方式状语从句,“按照”
例如:You must do the work as I have told you.
5.As还可引导让步状语从句.“尽管”.但是注意,as引导方式状语从句时从句必须倒装.而且这种倒装和一般的倒装不一样.as从句的倒装一般是把从句的表语或作状语的副词提到as之前,(如果表语是一个带有不定冠词a或an的单数名词,倒装后a或an必须省略).
例如:Though he is a little boy,he knows a lot.如果变成由AS引导,就必须变成:
Little boy as he is,he knows a lot.
Though he works hard,he never succeed.
可变为 Hard as he works,he never succeed.
as引导的方式状语从句和定语从句的区别
1.as作为连词可引导方式状语从句,意为“象……一样”,例如:
Remember,you must do everything as I do.记住,你们务必照我的样子去做每一件事.
But Americans still talk about “fall” just as people do in some parts of western England.但是美国人还是说 “fall”,就象英格兰西部有些地区的人现在说 “fall” 一样.
2.as作为代词,通常以the same…as,such…as或as…as…的形式引导定语从句,as在定语从句中作主语、宾语或表语,例如:
作主语:As is known to all,coal is first discovered in China.众所周知,煤是最先在中国发现的.
作主语:As many people as were present knew the news.在场的人都知道这条消息.
作主语:Repeat this as often as is necessary.重复做这种动作的次数视需要而定.
作宾语:Such people as you mention are rare nowadays.你提到的那种人如今很少了.
作表语:He is not (= no longer) the same man as he used to be.他再也不是从前的他了.
3.as意为“当……”,引导时间状语从句;as强调主句动作与从句动作同时发生,通常译为“一边……一边……”,例如:
As the students watched him quietly,he mixed the three together.学生一边静静地看着他,他一边将三种东西混和起来.
which引导的定从和as引导的区别
which引导的定语从句和as引导的定语从句的区别:
1.as可以放在主句前后,也可插入主句之中;而which引导的非限制性从句只能位于主句之后。
As is known to all, fish can’t live without water.
Air, as we know, is gas.
2.在非限制性从句中,which后的be动词不可省;as而后的be动词可以省略。
She told me she won the match, which was a lie.
The material is elastic, as (was) shown in the figure.
3. which在非限制性定语从句做主语时可用各类动词做谓语;而as做主语时,谓语常用系动词,如be, seem, become等,一般不用其他行为动词。
He saw the girl, which delighted him.
He didn’t say anything at the meeting , as/which seemed very strange.
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