状语从句的简化
一、当状语从句的主语是it且谓语动词是be时，it和be可全省略。例如：
如果可能的话，他会帮你摆脱困境的。
If (it is )possible, he will help you out of the difficulty.
二、当状语从句的主语和主句的主语一致时，从句可以将主语和be动词省略。常用于以下情况：
1．连词+形容词
他小时候就学会了怎样骑自行车。
As (he was )young, he learned how to ride a bike.
2．连词+名词
他在孩提时代时，就乐于助人；
While (he was )a young boy, he was always ready to help others.
3．连词+现在分词
地沿着河堤边走边唱着流行歌曲。
As (she was )walking along the fiver bank, she was singing a pop song.
4．连词+过去分词
除非受到邀请，否则他是不会和我们一道去那里的。
He won't go there with us unless (he is )invited.
5．连词+不定式
当时他站起来好像要说点什么。
He stood up as if (he were)to say something.
6．连词+介词短语
她看上去很焦虑，就好像遇到了麻烦似的。
She looked anxious as though (she was )in trouble.
注意：若从句主语和主句主语不一致时，从句部分要么用完全形式，要么用独立主格结构来表达。
例如：
当会议结束时，人们都走出了会议室。
When the meeting was over, all the people went out of the meeting-room.
( = The meeting over .... )
她读着读着(小说)，眼泪浸满了双眼。
While she was reading the novel, tears came to her eyes.
(=She reading the novel .... )
巩固性练习：请选出符合题意的最佳选项。
1. When first ______ to the market, these products enjoy great success.
A. introducing B. introduced C. introduce D. being introduced
2.It shames me to say it, but I told a lie when_____ at the meeting by my boss.
A. questioning B. having questioned C. questioned D. to be questioned
3. The man we followed suddenly stopped and looked as if______ whether he was going in the fight direction.
A. seeing B. having seen C. to have seen D. to see
4. Generally speaking, ______ according to the directions, the drug has no side effect.
A. when taking B. when taken C. when to take D. when to be taken
5. Unless _____ to speak, you should remain silent at the conference.
A. invited B. inviting C. being invited D. having invited
6. The research is so designed that once________ nothing can be done to change it.
A. begins B. having begun C. beginning D. began
7. When _______ , the museum will be open to the public next year.
A. completed B. completing C. being completed D. to be completed
8. Though_______ money, his parents managed to send him to university.
A. lacked B. lacking of C. lacking D. lacked in
9.除非情况对你不方便，否则你必须出席这个会议。
10.有空就去逛商店。
11.少壮不努力，老大徒伤悲。
12.以前他曾经是个农民，而现在是个著名的导演了。
13.尽管近来他一直在学数学，但他仍然没有取得好成绩。
14.这场音乐会出乎意料地获得了巨大成功。
15.即使他来负责，也解决不了这个问题。
16.他到美国之前就精通英语了。
You must attend the meeting on time unless (it is )inconvenient to you.
Whenever (she is )free, she often goes shopping.
Work hard when (you are )young, or you'll regret.
Once (he was )a farmer, now he is a famous director.
Although (he is )doing his best in maths these days, he has still got no good marks.
The concert was a great success than (it was )expected.
He wouldn't solve the problem even if (he were)to take charge.
He had mastered the English language before (he was) in the USA.
Keys: 1.B 2.C 3.D 4.B 5.A 6.D 7.A 8.A
课件7张PPT。状语从句（Adverbial Clauses）
状语从句是副词性从句，它在句子中担任状语，修饰主句的动词、形容词或副词。根据修饰的方面，状语从句可以分为以下九种。
1、时间状语从句
2、地点状语从句
3、原因状语从句
4、目的状语从句
5、结果状语从句
6、条件状语从句
7、方式状语从句
8、让步状语从句
9、比较状语从句祝圣诞快乐1.时间状语从句课件7张PPT。状语从句（Adverbial Clauses）
状语从句是副词性从句，它在句子中担任状语，修饰主句的动词、形容词或副词。根据修饰的方面，状语从句可以分为以下九种。
1、时间状语从句
2、地点状语从句
3、原因状语从句
4、目的状语从句
5、结果状语从句
6、条件状语从句
7、方式状语从句
8、让步状语从句
9、比较状语从句祝圣诞快乐1.时间状语从句课件29张PPT。Adverbial Clauses齐齐哈尔阳光学校
魏乐美Language for Chapter Four (SB1)
1.Adverbial Clauses of Time:（时间状语从句）
when, while, as, before, after, since, until,
as soon as, every time, each time, the
moment, by the time…
I.when
1)When he comes here tomorrow,I will call
you. (at the time that)
2)Henry is in charge of the office when
Mr.Smith is away. (during the time that) II.while
1)While he was walking in the street,
he met Tim. (分词短语）
While walking in the street,he met Tim.
Walking in the street ,he met Tom. 2)He learned to speak English while he was
here.
3)I like tea while she likes coffee.III. as (一边...一边,随着）
1)As they were picking tea,the girls were
singing happily.
2) She sang as she worked.
IV. Before
1)It won’t be long before he finishes his writing.
V. After
1)After he (had) finished his work,he left there.
He (had) finished his work before he left here.After finishing his work,he left here. Having finished his work,he left here. VI. since (from the time that)
1)I have known him ever since he was a boy.
2)I have worked here since I graduated from
the university.
3)It is (has been)two years since he came here.VII. until (till) (up to the time that)
1)He will not go to bed until(till) his
mother comes.
2)Until she told me, I had no idea of what
they had said.
3)It is not until his mother comes home
that he will go to bed.(强调结构）VIII .as soon as
1)As soon as she got home,she began to cook.
On getting home,she began to cook. *IX. every time,each time,the moment
1)Every time/each time I catch a cold,I
have pain in my back.
2)There was an applause the moment (as
soon as) she appeared on the stage.X. by the time
1)By the time he arrived,the train had already
gone.
2)By the time he comes,we will already have left.
Exercises:
1.They walked out of the room ___the
meeting was over.
2.They must stay in school ____they are
sixteen.
3.Take the medicine ____you go to bed.
4.I knew nothing about it _______he told me.
5.It is more than five years ____we started to
learn English.
6._____he talked on,he got more and more
excited.
7.We should strike ____the iron is hot.
2.Adverbial Clauses of Reason(原因状语从句）
because, since, as,
now that, for
I. because
1)The ship changed its course because there
was a storm.
The ship changed its course because of
the storm.2)Because he was ill,he didn’t go to school.
He was ill ,so he didn’t go to school.Being ill, he didn’t go to school. II.since
1)Since you are ill,you’d better go to see
the doctor.
2)Since you do not understand ,I will
explain again.
III.as
1)As she was late for class,she had to say
sorry.
2)As Jane was the oldest in this family,
she had to look after the others.
IV. now that
1)Now that class is over,let’s go to play
football.
V.for
He must be ill, for he is absent today.
Exercises:
1.The teacher must be strict with you ____
they want you to make great progress.
2.____your father is well again,you no longer
have anything to worry about.
3.The day breaks,_____the birds are singing.
3.Adverbial Clauses of Condition
(条件状语从句）
I.if
1)If he had worked harder,he would have passed
the exam.
2)If you work harder,you will succeed. Work harder, and you will succeed.
Work harder,or you won’t succeed.Working harder,you will succeed.II.unless
1)We can’t write to Mary unless she tells us
her address.
We can’t write to Mary if she doesn’t tell us
her address.
*III.as long as(只要 )
1)I will never give up learning as long as I live.
2)You may borrow the book as long as you
keep it clean. *IV.on condition that（条件是）
We’ll let you use the room on condition that
you keep it tidy.*V.in case(万一）
You’d better take your raincoat with you in case
it rains.4.Adverbial Clauses of Place (地点状语从句）
You may find him where his parents live.5.Adverbial Clauses of Purpose (目的状语从句）
so that /in order that
They set out early so that (in order that) they
might arrive there in time. They set out early in order to( so as to)
arrive there in time.6.Adverbial Clauses of Result（结果状语从句）
so…that…,such…that…
1) It is so good a story that I’ll never forget it.
It is such a good story that I’ll never forget it.
2)such+adj.+名词 +that clause
3)so +adj./adv. +that clause
4)so + many/few + 复数名词 +that clause
much/little+不可数名词
7.Adverbial Clauses of Comparison（比较）
as…as,not as(so)…as,
more/-er…than,less…than
1)He doesn’t work so hard as you do.
2)There is as much ink in bottle A as in bottle B.
3)The more you worry,the less you’ll succeed.
4) Gold is much heavier than any other metal.
8.Adverbial Clauses of Concession(让步）
1)Although(Though) he is old ,he works hard.
He is old,but he works hard.
*2)Even though (even if)you say so,I don’t
believe it. (即使 )*3. Difficult as the work is,we’ll finish it on time.
Though the work is difficult,we’ll finish it
on time.
4.Whenever(No matter when) you come to
our country,you will be warmly welcomed.
5.Wherever(No matter where) he goes,he always
brings two bodyguards with him.
9.Adverb Clauses of Manner(方式状语从句 )
1) You must try to do as I did.
2)Let’s do as Mrs. Li teaches us.
*3)He talks as if he knew all about it. (好象 )Exercises:Fill in the blank with a conjunction.
(where, unless, if, as, such…that, even though , as if, now that)
1.A driver should slow down ___the
roads are narrow.
2.___you mail the letter today, it won’t arrive
there.
3.___he has time,he will come and see us later.
4.Tom made __great progress ___his headmaster praised him at the school meeting.
5.___his father knew what he had done, the boy was going to be in trouble.
6.We will stay a little longer ___it is very late.7.She pretended to laugh loudly ___the story
were very funny.
8.Poor ___his English was,yet Mr.Li made
himself understood in England.
9.You should do ___your parents ask you to do.BYE BYE !
