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状语从句重难点讲解

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2020-10-25 03:57
tags:时间状语从句

伙夫是什么意思-counselor

2020年10月25日发(作者:鱼俊)


状语从句重难点讲解
本模块中我们复习了时间状语从句、条件状语从句和让步状语从句 。下面我
们来看看这三种从句中需要注意的几点。
时间状语从句
1. before since
“It be + 一段时间 + before ...”结构,在肯定句中常译为“多久之后才……”;在
否定句中常译为“不久之后就……”。如:
It will be three years before he graduates from university.
It was not long before he found another job.
“It is has been + 一段时间 + since ...”结构中, since从句的谓语动词多用一般
过去时,表示动作或状态的完成, 计时的起点是动作或状态完成的那一时刻。
在语义上,从句动词为延续性动词时,含有否定的意味;从句 动词为非延续性
动词时,含有肯定的意味。如:
It is 3 years since he were here. (表示“他不在这儿已经3年了”)
It is 3 years since he stopped smoking. (表示“他不抽烟已经3年了”)
2. when as while
表示“当……时”,when引导的从句的动作和主句的动作可以同 时发生,也可
先后发生,从句中的动词既可以是延续性的,也可以是非延续性的;as,while引导的从句强调主句和从句的动作同时发生,并且从句中的动词通常是延续性
的。如:
When I lived there, I used to go to the seashore on Sundays.
While you were reading the paper, I was working.
As the kids walked home, they sang happily.
注意:当从句表示“随着”时,连词只能用as。如:
As the day went on, the weather got worse.
3. till until
两者都表示“一直到……;直到……才”,基本上可以互换,但till一般不位于
句首。当表示主句动 作延续到某时才停止时,主句用肯定句;当表示主句动作
到某时才开始发生时,主句用否定句。如:


I’ll wait here until till the result comes out.
(wait这个动作延续到the result comes out停止,主句用肯定句)
I won’t leave here until till the result comes out.
(leave这个瞬间动作到the result comes out才发生,主句用否定句)

条件状语从句
1. only if意为“只有,只要”,位于句首时句子用倒装结构。如:
Only if you put your heart into your work can you realise your dream.
2. 引导条件状语从句的从属连词有:if,unless,so as long as, in case, on condition
that, suppose supposing, provided that等。

让步状语从句
1. as though although
as 引导让步状语从句必须采用倒装结构,常用结构为“形容词、副词、名词(其
前不用冠词)、动词 + as + 主语 + 其他”。though比较口语化,为了强调, 从
句可以倒装;although 比较正式,多用于句首;两者都不与but连用,但可与
s till,yet,nevertheless连用。如:
Young though as he is, he runs the company successfully.
Though Although we warned him about the danger of travelling in the forest alone,
he went there without telling us.
2. “no matter + 疑问词”或“疑问词 + ever”引导让步状语从句,意为“不管……;
无论……”,后面用陈述句语序。 whether ... or ..., 也可表示让步关系, 意
为“不管……还是……”。如:
Whatever (= No matter what) you say, he won’t believe you.
I’ll not have you worry about her whether she’s well or ill.





总结
状语从句种类 常用连词
when, as, while, after,
before, till until, since,
once, as soon as, by the
时间状语从句
time, the moment,
hardly ... when, the
minute, every time, next
time, no sooner ... than,
immediately, ever since等
例句
While I was in Madrid there was a
carnival.
The water is fine once you're in!
Immediately she'd gone, I
remembered her name.
No sooner had we started playing
football than it started raining.
I will lend you the money on
if, unless, so as long as,
条件状语从句
only if, on condition that,
supposing (that) 等
condition that you pay it back in
one month.
Supposing (that) it were true,
what would happen?
though, although, as (尽
管), while (虽然),
however, even though if,
让步状语从句
whatever, whether, no
matter how what
which when where
who等
Young as I am, I already know
what career I want to follow.
While I am willing to help, I don't
have much time available.
Keep calm, whatever happens.
I show everything on my
face,whether I'm angry or pleased.
Since there's no more time, we
原因状语从句
because, since, as, now
that等
must give it up.
Now that dinner is ready, wash
your hands.
so that, in case (以防), in
order that, for fear that等
Bring it nearer so that I may see it
better.
Bring a map in case you get lost.
目的状语从句


方式状语从句
【即学即练】
(just) as, as if though等
Julie loves the boy as if she were
his mother.
选用括号内合适的内容完成下面短文。
I'm here today to give you some tips on how to prevent house fires. I'll also be
telling you the best way of getting out of a fire, 1. ________ (if unless) you ever
happen to be trapped in one.
Most fires in the home happen 2. ________ (whenever while) people are sleeping.
One of the most important steps you can take to protect your family is to add a smoke
alarm on each floor of your house. 3. ________ (Once Before) you've got your
smoke alarm added and working, you should make an escape plan with your family to
make sure everyone knows how to get out. The most common causes of fire in the
home are tobacco and smoking products, 4. ________ (so when) it's best to avoid
smoking in the bedroom. It's also important to keep matches and lighters out of reach
of children.
If a fire does break out and you get trapped in your home by smoke or fire, you
should close all doors and stuff towels or clothing under the doors 5. ________ (in
case so that) the thick smoke will be kept out. Cover your nose and mouth with a
damp cloth to protect your lungs. When escaping through a smoky area, you'll need to
crawl out on all fours, 6. ________ (because although) cleaner air is always nearer
the floor. Finally, and very importantly, 7. ________ (when though) a fire breaks out,
do not try to rescue pets or possessions 8. ________ (as if even if ) they are of great
value. There isn't time to do this — you must get out as soon as possible. Firefighters
have a better chance of rescuing people who are trapped than you do.
答案
1. if 2. while 3. Once
8. even if
4. so 5. so that
6. because 7. when


I. 选用方框内合适的内容完成下面句子(每项限用一次)。
in case, since, on condition that, while, whatever, whether
1. _______________ I was in Madrid there was a carnival.
2. I will lend you the money _______________ you pay it back in one month.
3. Keep calm, _______________ happens.
4. I show everything on my face, _______________ I'm angry or pleased.
5. _______________ there's no more time, we must give it up.
6. Bring a map _______________ you get lost.
II. 选用方框A(每项用两次)和方框B(作为句子结尾)内合适的选项完成下
面句子。
A
a. it pays poorly
①in order that
②so as not to
③seeing that
b. some broken tiles (瓷砖) could be repaired
c. damage its roots
d. larger planes can land there
e. she's so fit
f. be overheard
1. The swimming pool had to be emptied ________ + ________.
2. People here don't put much effort into the job ________ + ________.
3. You need to lift the plant carefully ________ + ________.
4. The runway is going to extended ________ + ________.
5. She'll probably recover from the illness quickly ________ + ________.
6. We spoke very quietly ________ + ________.
答案
I. 1. While 2. on condition that 3. whatever
4. whether 5. Since 6. in case
II. 1. ①+b 2. ③+a 3. ②+c
4. ①+d 5. ③+e 6. ②+f

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