开头成语-convenient是什么意思
状语从句
一.
分类:
种类 连接词
whenwheneverwhileasbeforeafterinstantly
untiltillby the timeas soon ashardly…when
no sooner…thanthe momentthe minuteimmediately
有一些表示时间的名词短语也可用来引导时间状语从
句:
注意区别:
the minute, the moment, every time, the
f
irst time
例
时间
状语
as和when、while:
as, when
引导短暂性动作的动词。当从句的动作发生于主句
:
动作之前,只能用when
引导这个从句,不可用as 或 while。
The moment he reached the
country, he star
从句表示随时间推移连词能用as,不用when 或while。
ted his
search. 他一到达这个国家,就开始他的探寻工作。
有一些表示时间的副词也可用来引导时间状语从句:
directly
例:
Directly the master came in, everyone
was
quiet.
校长一进来, 大家就安静下来
tilluntil和not…tilluntil:
until可用于句首,而till通常不用于句首。
地点
where
状语
方式
the same
as结构)
as if 和as though引导的从句一般用虚拟语气。
as
if, as though, as, (just)as---so,
状语
让步
Thoughalthougheven ifeven though as
状语
adv.+that(如此……以致) so that(结果……)
such+n.+that(如果……以致) that(所以,因此)
让步状语从句: thoughalthough不可同but连用。
thoughalthough (虽然) however (可是) even
thoughif(即使)
no
matter+whatwhichwherewhowhen
=whateverwhicheverwhereverwhoeverwhenever
(不论什么哪一个哪里谁何时)
比较状语从句: as (正如)
as…as(和……一样) not asso … as (不如……)
than(比……
更)
the+比较级…+the+比较级 (越……越……)
条件状语从句: if(假设) unless(如果不) so long as(只要)
on condition that (如果)
方式状语从句: as(像……那样地)
just as(正像) as if(好像) as though(好像)
二. 各种状语从句的简化方法:
状由whenwhileasoncewhenever引导的时间状语从句 当主句的主语和从
句的主语一致时,且
谓语动词为be,常省
略从句的主语和谓
语be.
语
由ifunless引导的条件状语从句
从
由thoughalthougheven thougheven
if引导的让步状语
句
从句
由because引导的原因状语从句
由wherever引导的地点状语从句
1.以after和before引导的状语从句的
主语若与主句主语一致时,从句等于
afterbefore+doing sth.作状语。
例:After she sang,she left the rich man's
house. = After singing,she left the rich
man's
house.
2.以as soon
as引导的状语从句的主语若与主句主语一致时,从句等于on+doing sth.,作状语,
此
时的动词为非延续性动词。
例:Mary began to operate on the
wounded soldiers as soon as he arrived at the
village.
= Mary began to operate on the
wounded soldiers on arriving at the village.
3.时间状语从句和条件状语从句的主语和主句主语一致时,有时可简化为不定式作状语。
例:She stopped when she saw her husband. = She
stopped to see her husband.
If you want
to understand the farmers,you must go to the
countryside.
= To understand the
farmers,you must go to the countryside.
4.结果状语
从句和目的状语从句的主语与主句主语一致时,可以简化为不定式作状语;若两者主
语不一致时,则应简
化为不定式的复合结构作状语。
例:He was so tired that he
couldn't go any further.= He was too tired to go
any further.
I came here so that I
could ask some questions.= I came here(in order)
to ask some
questions.
5. 以when,while引导的时间
状语从句和以if引导的条件状语从句的主语若与主句主语一致时,
从句等于whenwhileif
+doing sth.作状语,表示谓语动作发生在该状语动作的进行过程之中。
例:When
he turned on the radio,he found it broken.= When
turning on the radio,he found
it
broken.
While she was walking along the
street,she was hit by a car.= While walking along
the street,she was hit by a car.
6.原因状语从句的主语与主句主语一致时,可简化为分词短语作状语。
例:Since l
didn't know Chinese,I tried to speak to her in
English.= Not knowing Chinese,
I tried to speak
to her in English.
注意:形容词短语也可作表示原因的状语,来代替原因状语从
句,放在句首、句末均可,但一般
应加逗号。
例:As he was thirsty
and eager to get a little rest,he went into the
tea-house.
= Thirsty and eager to get a
little rest,he went into the tea-house.
7.在时间、
原因、条件等状语从句中,若从句和主句主语不一致时,可简化为分词复合结构作状
语。有时也可简化为
“withwithout名词或代词十分词(短语)”形式作状语。
例:When the
film start appeared, the children got exited.= The
film start appearing,
the children got exited.
If all the work is done, you can have a
rest.= With all the work done,you can have
a
rest.
Nothing can live if there is no
air.= Nothing can live without air.
8.让步状语从句的主
语与主句主语一致时,可简化为分词短语作状语;不一致时,常简化为with
或in spite
of介词短语作状语。
例:Although he faced his death,he
didn't say anything before the enemy.
=
Facing the death,he didn't say anything before the
enemy.
Although there was danger,he rushed
out to carry the boy to safety.
= In spite of
danger,he rushed out to carry the boy to safety.
三.表示一…就…的结构
hardlyscarcely…whenbefore, no sooner…than 和as soon
as都可以表示一…就…
的意思, 例:I had hardly scarcely got
home when it began to rain.
I had no
sooner got home than it began to rain.
As soon as I got home, it began to rain.
注意:如果hardly, scarcely 或no sooner置于句首,句子必须用倒装结构:
Hardly Scarcely had I got home when it began
to rain.
No sooner had I got home than it
began to rain.
四.As引导的让步状语从句的倒装:
1.形容词+as+主语+系动词:
例:Tired as he is, he
offers to help me. 尽管他已经很累了,他还是主动提出帮助我。
2.过去分词+as+主语+系动词:
例:Well-known as the book
is, the author is not satisfied and prepared to
revise it.
尽管这本书写得很好,作者还是不满意并打算修改它。
3.名词+as+主语+系动词:
例:Student as he is, he
does not study hard. 他虽然是个学生,但却不努力学习。
4.副词+as+主语+谓语部分:
例:Much as I admire his
courage, I don’t think he acted wisely.
我虽然钦佩他的勇气,但我认为他这样做是不明智的。
5.动词原形+as+主语+谓语的剩余部分:
例:Try as you
will,you won’t be able to persuade him.
不管你怎么努力,你都说服不了
他。
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