中小学教育资源及组卷应用平台
英语时间状语从句讲解
题型解读
(1)when, while 和 as 引导时间状语从句的用法
一、when 的用法
如果只从现象来看,when 从句用的最多的是一般过去时,而主句的时态没有限制,根据具体情况而定。
1. When he was a child he was always trying out new ideas.
3. Were you writing when the teacher came in? 老师进来的时候,你在写信吗?
4. Sorry, I was out when you called me. 对不起,你打电话来的时候我出去了。
when 从句的重点不在动作本身发生的状态,而只是把它作为一个时间点,所以when 多数情况下用的是一般过去时,则不用正在进行时。因为如果用正在进行时,它表示的就是一段时间而不是一个时间点了。根据这一点,有的文章补充说:when 从句的动词大多是瞬时动词。这种说法也可以参照。
实际上,when 从句也可以有其它的时态,但几乎也不用进行时,因为它也只是作为一个时间参照点。例如:
2. When he had finished his homework, he took a short rest.
3. Why do you want a new job when you have got such a good one already?
二、while 的用法
相比于when 来说,while 从句的侧重点就不一样了。while 从句的侧重点在于描述动作正在发生的状态,它的意思是:当while 事件正在发生的时候,另一件事如何如何。所以,while 从句一般用的是正在进行时。而另一件事的状态没有硬性的要求,根据具体情况而定。例如:
1. While my wife was reading the newspaper, I was watching TV.
2. While Jim was mending his bike, Lin Tao came to see him.
3. While they were talking, the bell rang. 正在他们谈话的时候,上课铃响了。
从时间的角度来看,while 表示的是一段时间,是一个过程。这是while 的侧重点。因此,如果含有“一段时间”的含义的时候,就可以用while。
6. Strike while the iron is hot. 趁热打铁。
这句话中,是说趁着铁是热的这段时间,赶紧打铁。如果换成 when 意思就变了,相当于说铁只热了一下,打一下,然后铁就冷了。这显然不符合文意。
再例:
—I'm going to the post office.
—While you're there, can you get me some stamps?
三、as 的用法
as 从句表示的也是一件事情正在发生,另一件事也正在进行当中。但与 while 从句不同的是,as 从句用的一般不用正在进行时,而只是一般过去时。as 从句一般可以翻译成“边……边……”。例如:
1. As my mother sang those old songs, tears ran down her cheeks.
2. The students took notes as they listened. 学生们边听课边做笔记。
3. As we talked on, he got more and more excited.
as 表达的事件,往往只是主句动作发生的背景或条件时,as 只是一个次要的时间说明,不像while 从句有强调 while 动作本身的意思。因此,as 常常翻译成“随着……”之意。
例如:
1. As the time went on,the weather got worse. 随着时间的推移,气候更加糟糕。
2. The atmosphere gets thinner and thinner as the height increases.
3. As years go by,China is getting stronger and richer.
少数情况下,如果强调动作正在发生,as 从句也可以用正在进行时。这只能算是特例了。
1. The sad mother sat on the roadside, shouting as she was crying.
2. As we were going out, it began to snow. 正当我们出门时,雪开始下起来。
3. He came in as I was going to bed. 我正要上床睡觉,他进来了。
四、when, while, as 的互换
如果从句动作和主句动作同时发生,并且从句动作为延续性动词时,when,while,as 可以互换使用。
1. When /While /As we were dancing, a stranger came in. [dance 为延续性动词]
2. When /While /As she was making a phone call, I was writing a letter. [make为延续
五、比较while, when, as
1)as, when 引导短暂性动作的动词。
例如:Just as / Just when / When I stopped my car, a man came up to me.
2)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。例如:When you have finished your work, you may have a rest.
3)从句表示“随时间推移”连词能用as,不用when 或while。
例如: As the day went on, the weather got worse.
(二)before和after引导的时间状语从句
1. Before是主句动作发生在从句的前面。注意before引导的从句不再用否定式的谓语,并且当before引导的从句位于主句之后,有时译成“就,才”。还要注意主句和从句之间的时间关系。当主句用将来时,从句总是用现在时;如果before引导的从句谓语用的是过去时,则主句动词多用过去完成时,这样以便体现动作发生的先后。
2. After表示主句动作发生在从句动作之后。主句和从句的动作的时间关系正好与before引导的从句相反。例如:
It will be four days before they come back. 他们要过四天才能回来。
After we had finished the work, we went home.(从句用过去完成时,主句用一般过去时)
(3)比较until和till 的用法
此两个连词意义相同。肯定形式表示的意思是“做某事直至某时”,动词必须是延续性的。否定形式表达的意思是“直至某时才做某事”。动词为延续性或非延续性都可以。正确使用这两个连词的关键之一就在于判断句中的动词该用肯定式还是否定式。
肯定句:I slept until midnight. 我一直睡到半夜时醒了。
Wait till I call you. 等着我叫你。
(在肯定句中可用before代替。例如:Let's get in the wheat before the sun sets.)
否定句:She didn't arrive until 6 o'clock. 她直到6点才到。
Don't get off the bus until it has stopped. 公共汽车停稳后再下车。
(4) 区别:1)until可用于句首,而till通常不用于句首。
例如:Until you told me, I had heard nothing of what happened.
3)until when 疑问句中,until要放在句首。例如:
---Until when are you staying? 你呆到什么时候?
--- Until next Monday. 呆到下周一。
注意:否定句可用另外两种句式表示。
4)Not until…在句首,主句用倒装。
例如:Not until the early years of the 19th century did man know what heat is.
Not until I began to work did I realize how much time I had wasted.
5)It is not until… that….
例如:It was not until I began to work that I realized how much time I had wasted.
(四)巧辨before和until
在日常英语教学中,我们遇到学生问这样的一些问题:
1.He will spend six hours at his desk____he finishes his composition.
A.before B.until C.after D.when
2.The bike hit the tree____I could get off.
A.when B.before C.while D.until
3.I knocked at the door for more than five minutes____Mrs white answered it.
A.until B.when C.after D.before
4.It was____yesterday____be____the secret.
A.not until;that;knew B.until;when;knew
C.not before;that;found D.before;that;didn't find
怎样才能清楚地解释其选择的原因,这就涉及到until与before的区别问题。
实际上,只要我们把握住两者使用时本身的含义及主句动词是终止性的,还是延续性的,肯定式,还是否定式两大点,就能容易地解决这类问题。现详细阐明如下:
一、在下列情况下,两者可互换用,但含义略有不同。before表示“在……之前”的意思,强 调时间先后关系;而until表示“直到……才”的意思,主句是肯定句则表示主句动作的终止时间;主句是否定句则强调主句动作的起始时间。
1.主句为否定式终止性谓语动词。常见的动词是open,start,leave,arrive,finish,
stop等。例如:
(1)The noise of the street didn't stop until/before it was midnight.
(2)The children won't come back until/before it is dark.
(3)I didn't leave the lovely boy until/before his mother came home.
2.主句为肯定式、延续性谓语词,这类动词用stand,stay,talk,be,wait等。例如:
(1)He lived with his parents until/before he graduated from school.
(2)I will wait until/before he comes to my help.
(3)I shall stay heer until/before you come back.
二、在下列情况下,用before不用until。
1.主句这肯定式、终止性谓语动词,只用before。例:
(1)He fell asleep before I could take off his clothes.
(2)We arrived there before it atarted to rain.
2.主句谓语动词强调动词的迟缓性,只用before,常伴有时间段状语或时间段暗示。例:
(1)It was quite some time before he found the elephant at all.
(2)We had walked a long way before we found some water.
3.如果强调从句谓语动作未发生,就发生主句谓语动作,只用before。常译为“未及”,“不”或“不等……就”。例:
(1)We can leave early in the morning before it gets too hot.
(2)I must write it down before I forget it.
(3)We do want to buy something now before prices go up.
4.表“与其说……倒不如”,“与其……毋宁……”只用before。例:
(1)I would give up my job before I'd agree to be dismissed.
(2)He will die of hunger before he will steal.
5.在某些特定句型中用before。例如:
(1)It was not long before the whole country rose up.
(2)It will probably not be long before they understand each other.
三、下列情况一般区别用until。
1.主句是持续性谓语动词时,肯定、否定都可以,但意义完全不同。肯定表动作终止,而否定表动作开始。例如:
(1)We discussed the problem until/before he came back.
(2)We didn't discuss the problem until he came back.
2.not…until句型尽管在某些情况下可与before互换用,但在强调句中一般仍用until。
(1)It was not until he told me that I knew it.
(2)It was not until he finished his homework that he went home.
综上所述,前面的4条选择题中,第1、3题强调动作发生的迟缓性应选before。第2题表动作未及发生就发生主句动作也应选before。第4题为强调句应选A项。
(五)其他时间状语从句的用法
1.由since引导的时间状语从句。
since引导的从句的谓语动词可以是延续性的动词,又可以是瞬时动词。一般情况下,从句谓语动词用一般过去时,而主句的谓语动词用现在完成时。但在It is +时间+since从句的句型中,主句多用一般现在时。例如:
I have been in Beijing since you left. 自从你离开以来,我一直在北京了。
It is five months since our boss was in Beijing.我们老板离开北京有五个月了。
知识扩展
1. It is since从。。。以来多长时间了(因为since +从句或名词,表示一段时间)
It is five years since we met last time.从我们上次见面已经五年了。
2. It is +before…(。。。才)
It was a long time before I went to sleep again.
It was an hour before(=until) the police arrived.
2.由as soon as, immediately, directly, instantly, the moment, the instant, the minute, 等引导的时间状语从句。
这些连词都表示“一……就”。例如:
I will go there directly I have finished my breakfast. 吃完早饭,我立即到那里去。
The moment I heard the news, I hastened to the spot.我一听到消息,马上赶到了出事地点。
As soon as I reach Canada, I will ring you up. 我一到加拿大,就给你来电话。
3.由by the time引导的时间状语从句。
注意时态的变化:在一般情况下,如果从句的谓语动词用一般过去时,主句的谓语动词用过去完成时;如果主句的谓语动词用一般现在时,主句的谓语动词用将来完成时。例如:
By the time you came back, I had finished this book.到你回来时,我已经写完这本书了。
By the time you come here tomorrow, I will have finished this work. 你明天来这儿的时候,我将已经完成此工作了。
注意:when while as after before as soon as since till /until by the time 在时间状语从句中,要注意时态一致。一般情况下主句是将来时的时候,从句要用一般现在时。
方法点拨
时间状语从句
引导时间状语从句的连词有:while, when, as, as soon as, till, until, not…until, before, after, since, etc.
时 间 状 语 从 句 连词 例句 说明
when When he came last night, I was doing my homework. when指的是“某一具体的时间”。
while ① While it was raining, they went out. 正当天下雨的时候时,他们出去了。②I stayed while he was away. 他不在的时候而我在。(然而)③All of us are working hard while he is sleeping.(然而,并列连词) ①while指“在某一段时间里”,“在┉期间”,有时表示主从句的轻微转折,译为:“而”②while引导的动作必须是持续性的。
as ① He hurried home, looking behind as he went. 他赶快回家,一边走一边向后看。② As time goes by, I like China better. 随着时间的流逝,我越来越喜欢中国。 ①as (译为“一边……一边”)引导持续性动作,强调主句和从句的动作同时发生;②as译为“随着……”
before ① I finished my task before I went home. 我做完作业才回家。② Be a pupil before you become a teacher.先做学生,再做先生。 在….以前
after He arrived after the game started. 比赛开始后,他到了。 after“在┉之后”
till until ①We waited till(until)he came back . 我们一直等到他回来。②She didn’t stop working until eleven o’clock . 她直到11点钟才停止工作。③Until he had passed out of sight, she stood there. 她站在那里看着,直到看不见他的身影。 ①如主句动词是持续性动作,常用肯定式,表示“直到……为止”;②not…until…表示“直到…才…”“在…以前不…”。 主句通常用瞬间动词。这时until可用before替换。 【例】He didn’t leave until/before I came back. 有时可用never, nothing代替not.③ 如果从句放在句首表示强调,一般用until, 不用till.
since Great changes have taken place in China since 1978. 自从1978年以来中国发生了巨大的变化。 主句动词为持续性的,从句动词为瞬间的。
as soon as ①As soon as I arrive in Shanghai, I’ll write to you.我一到上海就给你写信。②My brother went out as soon as I got home. ③I'll phone you as soon as I arrive in Tonghua. as soon as 表示主句发生的动作发生在从句动作之后, 意为“一…就…”。如果主句是一般将来时,情态动词加动词原形或祈使句时,时间状语从句用一般现在时。当主句是一般过去时,从句一般也用一般过去时,简言之:主将从现;主过从过
典型题型/真题解析
1.He was just falling asleep _____ there was a loud knock on the door.
A.?while???????????????????????????????????B.?when???????????????????????????????????C.?then???????????????????????????????????D.?until
2.Henry will give us a report as soon as he ___________.
A.?arrives????????????????????????????B.?arrived????????????????????????????C.?is arriving????????????????????????????D.?will arrive
3.–What is your sister going to be ________ she grows up?
–She is going to be an engineer.
A.?before???????????????????????????????B.?although???????????????????????????????C.?when???????????????????????????????D.?unless
4.Walk along this road??? you reach the end. You'll find the book shop on the right.
A.?after????????????????????????????????B.?when????????????????????????????????C.?as soon as????????????????????????????????D.?until
5.?????? ?Mrs Li was washing clothes, her husband was cooking.
A.After B.Till C.While D.Because
6.My father was very tired yesterday. _______he got home,he went to bed.
A.?As long as????????????????????????B.?? Because????????????????????????C.?Although????????????????????????D.?As soon as
7.I was doing my homework _______ my father was reading newspapers.
A.?how??????????????????????????????????????????B.?while??????????????????????????????????????????C.?if
8.—You should pay attention to the traffic light ______ you cross the street.
—Sorry, I will be careful next time.
A.?until??????????????????????????????????B.?since??????????????????????????????????C.?after??????????????????????????????????D.?before
9.—When did your father come back from England??
—__________.
A.?Until 2 weeks ago.???????B.?Since 2 weeks ago.???????C.?For 2 weeks.???????D.?Not until last Sunday
10.He was so tired that he fell asleep _________ he went to bed.
A.?as if?????????????????????????B.?even though?????????????????????????C.?ever since?????????????????????????D.?as soon as
11.—Mom, shall we have supper now?
—Oh, we won't have supper _______ your dad comes back.
A.?until????????????????????????????????????B.?since????????????????????????????????????C.?while????????????????????????????????????D.?after
12.Miss Zhao is very helpful. She often helps us __________ we are in trouble.
A.?whether??????????????????????????B.?although??????????????????????????C.?whenever??????????????????????????D.?however
13.Boys and girls, calm down and focus on the test paper __________ you begin to think about the answers. Be confident. You can do it!
A.?as if???????????????????????????????????B.?as soon as???????????????????????????????????C.?although
14.——Do you know when he?????????tomorrow?
——Don't worry. I think as soon as he?????????, he will give you a call.
A.?will come; will come????????B.?will come; comes????????C.?comes; will come????????D.?comes; comes
15.—Why didn't you tell him about the meeting?
—He rushed out of the room ___________ I could say a word.
A.?before??????????????????????????????????B.?until??????????????????????????????????C.?when??????????????????????????????????D.?after
16.What do you usually do ________ your parents aren't at home?
-I do my homework. Sometimes I watch TV or play computer games.
A.?because?????????????????????????????????B.?while?????????????????????????????????C.?but?????????????????????????????????D.?before
17.—You can't cross the street now. You have to wait _______ the traffic lights?turn green.
—Oh, sorry and thank you.
A.?when???????????????????????????????????B.?after???????????????????????????????????C.?until???????????????????????????????????D.?while
18.Someone called me up in the middle of the night, but they hung up ???????I could answer the phone.
A.?as????????????????????????????????????B.?since????????????????????????????????????C.?until????????????????????????????????????D.?before
19.——When did your father come back last night?
——He didn't come back _______ he finished all the work.???????????????????????????????????????????????????????????
A.?until????????????????????????????????????B.?while????????????????????????????????????C.?if????????????????????????????????????D.?unless
20.My father didn't go to bed ___________ he finished the work.
A.?before??????????????????????????????????B.?after??????????????????????????????????C.?when??????????????????????????????????D.?until
21.Lihua has studied English ________ he came to Nansha. Now he can speak English with some foreigners.
A.?for????????????????????????????????????B.?when????????????????????????????????????C.?since????????????????????????????????????D.?after
22.— When shall we go to watch the basketball match in the sports centre?
— ?????????we ??????the work tomorrow.
A.?Until ;finish?????????B.?Not until; will finish?????????C.?Until;will finish?????????D.?Not until;finish
23.I will not go to bed _______I finish watching my favourite TV programme.
A.?since???????????????????????????????????B.?until???????????????????????????????????C.?after???????????????????????????????????D.?when
24.Don't be afraid of asking for help ______it is needed.
A.?when????????????????????????????????B.?after????????????????????????????????C.?although????????????????????????????????D.?unless
25.—Peter, please ask Tom to my office as soon as he _______ back tomorrow.
—OK, I will.
A.?come??????????????????????????????B.?coming??????????????????????????????C.?will come??????????????????????????????D.?comes
26.I will tell him ___________ I see him.????
A.?after soon?????????????????????????????B.?soon as?????????????????????????????C.?as soon as?????????????????????????????D.?till
27.You can't get back your football_________you finish your work.
A.?because?????????????????????????????????B.?after?????????????????????????????????C.?when?????????????????????????????????D.?until
28.?—Excuse me. Is it my turn now?
?—Not yet. Please wait on the chair ______your name is called.
A.?and??????????????????????????????????B.?until??????????????????????????????????C.?although??????????????????????????????????D.?since
29.—Mom, could I watch the game show now?
—Sorry, you can't watch it ______ you clean your room.
A.?when?????????????????????????????????????B.?if?????????????????????????????????????C.?after?????????????????????????????????????D.?until
30.— Could you tell me ____?
— Until tomorrow afternoon.
A.?how long you will stay there???????????????????????????B.?how soon you will stay there
C.?when will you stay there??????????????????????????????????D.?how often will you stay there
31.He made a mistake, but then he took action to change the situation ________ it got worse.???????????????
A.?until????????????????????????????????B.?when????????????????????????????????C.?before????????????????????????????????D.?because
32.You'd better make a good plan ________ you take a trip.
A.?before??????????????????????????????????B.?during??????????????????????????????????C.?until??????????????????????????????????D.?after
33.There was too much homework yesterday. I didn't finish it _______11 o'clock last night.
A.?on??????????????????????????????????????B.?for??????????????????????????????????????C.?until??????????????????????????????????????D.?from
34.Amy was reading a book __________I came in.
A.?when???????????????????????????????B.?while???????????????????????????????C.?because???????????????????????????????D.?Though
35.—Many students are unhealthy because of a lack of exercise
—I agree. They should start exercising?????????? ?it's too late.
A.?before??????????????????????????????????B.?until??????????????????????????????????C.?since??????????????????????????????????D.?after
36.It's raining outside. Don't leave ______ it stops.
A.?when???????????????????????????????????B.?until???????????????????????????????????C.?though???????????????????????????????????D.?so
37.__________ the children have fun, parents can take dance lessons on the beach.
A.?When????????????????????????????????????B.?If????????????????????????????????????C.?While????????????????????????????????????D.?Once
38.— When will you go to the park with me?
— _______ I have finished my homework.
A.?While??????????????????????????B.?Before?????????????????????????????????????????????????????C.?As??????????????????????????D.?Once
39.Many people do not realize the importance of health __________ they have fallen ill.
A.?since???????????????????????????????????B.?until???????????????????????????????????C.?while???????????????????????????????????D.?After
40.Our English teacher has taught us English in our school ______he came here.
A.?when???????????????????????????????????B.?for???????????????????????????????????C.?before???????????????????????????????????D.?since
41.My brother came back home while I????????? ?homework.
A.?am doing???????????????????????????B.?did???????????????????????????C.?was doing???????????????????????????D.?were doing
动词填空
1.—Excuse me, when can we use the chairs? --Not until they (mend) tomorrow.
2.As soon as Justin finishes the job, he (allow) to have two weeks off.
3.Seeing so many reporters and fans waiting to interview him outside, Dimash said, “I’m more nervous now than when I (sing)”
4.It will be much easier for people in Jiangyin to go out after the High-speed Rail . (build)
5.The dishes (lay) on the table as soon as they’re prepared.
6.Miss Green (teach) English for nearly 5 years before she moved here.
7.I missed the beginning of the volleyball match. When I turned on the TV, it (begin).
8.My uncle arrived when I (leave), I had to receive him first.
9.You should say "thank you”when you (give) something.
10.The water (feel) cold when I jumped into the poll for morning exercise.
11.—How doe your mother go to school?—By bike. She (take) a bus when it rains.
12.The chairperson (announce) the award as soon as he sees the principal.
13.Ever since he moved to this city, he __________(not visit) any place of interest.
14.You mustn’t touch the machines unless you (allow) to.
15.If population growth (not control) properly,it will be probably the most serious problem.
16.The fashion show (hold) unless it rains next Saturday.
翻译句子
1. 直到儿子被警察逮捕。这位老父亲才觉察到儿子所做的事。
The old father________________________his son did until the son was caught by the police.
2.同期,天气一变,这种疾病就爆发了。
The disease _____________________________ the weather changed this time last year.
3.中国公民在境外旅游时,必须防范任何可能发生的危险。
It’s necessary that we Chinese citizen _________________________________________ travelling in
foreign countries..
4.无论何时,只要需要他,Ben 总会来帮忙。
Ben will always come to help__________________________________________.
5. 有人警告你接受挑战前要三思了吗?
Were you ________________________________________________ on the challenge?
6. 谢谢你鼓励我坚持尝试直到最后的成功。
Thank you for till I succeeded at last.
7. 有时候直到珍贵的时刻成为回忆,你才会真正认识到它的价值所在。
Sometimes, you it becomes a memory
答案解析部分
一、单选题
1.【答案】B
【考点】时间状语从句,连词辨析
【解析】【分析】句意:在他刚刚睡着的时候,有人在大声地敲门。be doing sth …when …正在做某事的时候,突然…,固定句型,此处的when表示“突然”,故选B
【点评】连词在中考中涉及到的很多,尤其在宾语从句、状语从句、定语从句中连词是必考点。平时学习过程中,掌握连词的意思,及所表示的关系是至关重要的,这种关系的判断可以通过句子意思的理解来选择恰到的连词。while表示当…时候,强调两个动作同时进行,多用于进行时态中,只与延续性的动词连用,then然后,until表示直到...,常与not连用。
2.【答案】A
【考点】时间状语从句
【解析】【分析】考查时间状语从句的时态;句意:海伦一到达就给我们做报告。以as soon as…引导的时间状语从句,如果主句是一般将来时态,从句用一般现在时态。故选A。
【点评】本题考查主从符合句,在以as soon as 引导的时间状语从句中,主句是一般将来时态,从句要用一般现在时态。解题时注意句子的时态。
3.【答案】C
【考点】时间状语从句,连词辨析
【解析】【分析】A. before在…之前 B. although尽管??C. when 当…时候D. unless除非;句意:当你的妹妹长大后想要做什么?她打算做一名工程师。故选C
【点评】连词在中考中涉及到的很多,尤其在宾语从句、状语从句、定语从句中连词是必考点。平时学习过程中,掌握连词的意思,及所表示的关系是至关重要的,这种关系的判断可以通过句子意思的理解来选择恰到的连词。
4.【答案】D
【考点】时间状语从句,连词辨析
【解析】【分析】句意:沿着这条路走, 直到到达终点。你会在右边找到书店。 A. after在...之后;B. when 当...时候;C. as soon as一...就....??? D. until直到。until连词,直到,引导时间状语从句。根据语境可知此处为“直到”之意。 故选D。
【点评】考查引导状语从句的连词辨析。
5.【答案】C
【考点】时间状语从句,连词辨析
【解析】【分析】句意:李夫人在洗衣服的时候,她丈夫在做饭。after在……之后;till直到;while当……的时候;because因为,根据句意可知表示两个动作同时进行,所以用while。故答案为C。
【点评】考查引导时间状语从句的连词辨析。熟练掌握连词的用法,理解句意,根据前后的逻辑关系判断选项。
6.【答案】D
【考点】时间状语从句
【解析】【分析】句意:我的父亲昨天非常累,他一到家就上床睡觉了。A. 只要,引导条件状语从句,B. 因为,引导原因状语从句,C. 尽管,引导让步状语从句,D. 一······就,引导时间状语从句,根据句意,故选D。
【点评】考查连词。根据语境选出正确答案。
7.【答案】B
【考点】时间状语从句,连词辨析
【解析】【分析】句意:当我的妈妈在厨房做饭时,我的父亲正在看报纸。根据句意可知是一个时间状语从句,how如何,if如果引导条件状语从句,while当......时候,引导时间条件状语从句;while引导的时间状语从句的谓语动作必须是和主句谓语动作同时发生。根据主句和从句的时态,可知是同时发生,故选B。
【点评】考查while引导引导的时间状语从句。
8.【答案】D
【考点】时间状语从句,连词辨析
【解析】【分析】根据句意:—你应该注意交通灯____你过马路。—抱歉,下次注意。A.直到;B.自从;C.在……之后;D.在……之前。根据句意可知应是在过马路前看交通灯,故选D。
【点评】考查连词辨析,before引导的时间状语从句。
9.【答案】D
【考点】时间状语从句
【解析】【分析】句意:——你的父亲什么时候从英国回来的?——直到上周日。A. Until 2 weeks ago.?? 直到两周前,用于持续性动词; B. Since 2 weeks ago.自从两周前,用于现在完成时;C. For 2 weeks.? 长达两周,用于现在完成时;? D. Not until last Sunday直到上周日,用于一般过去时。根据助动词did可知此处表示一般过去时,故选D。
10.【答案】D
【考点】时间状语从句,连词辨析,短语辨析
【解析】【分析】句意:"他是如此的劳累, 以至于一躺床上就睡着了。"A"似乎";B"即使";C"自从";D"一......就......"。故选D。
【点评】考查引导状语从句的连词短语辨析。
11.【答案】A
【考点】时间状语从句
【解析】【分析】句意:—妈妈,我们现在吃晚饭好吗? —哦,直到你爸爸回来我们才可以吃晚饭。until直到;since自从;while当……的时候;after在……之后。not…until直到……才,是一个固定句型,所以选A。
【点评】本题考查时间状语从句,Not…until直到……才,是一个固定句型,引导时间状语从句。注意掌握引导时间状语从句的引导词的汉语意思。
12.【答案】C
【考点】时间状语从句,连词辨析
【解析】【分析】句意:"赵老师非常乐于助人。无论什么时候我们有麻烦, 她经常帮我们。"A"是否";B"尽管";C"无论何时";D"无论怎样;然而"。故选C。
【点评】考查引导状语从句的连词辨析。
13.【答案】B
【考点】时间状语从句,连词辨析
【解析】【分析】根据句意只要你一开始思考答案就要冷静下来集中精力在试卷上。A好像,B一...就,C尽管,故选B。
14.【答案】B
【考点】时间状语从句,时态统一
【解析】【分析】句意:你知道他明天什么时候来吗?别担心,我认为他一来,就会给你打电话。第一个句子是由when引导的宾语从句,做know的宾语,主现从任意,从句根据实际情况而定,时间状语是tomorrow,因此要用一般将来时。第二个句子是由as soon as引导的时间状语从句,主将从现。故选B。
【点评】考查宾语从句和时间状语从句的用法。
15.【答案】A
【考点】时间状语从句,连词辨析
【解析】【分析】句意:—关于这次会议为什么你不告诉他?—我还没来得及说一句话他已冲出房间。before连词,在……之前。根据句意可知选A。
16.【答案】B
【考点】时间状语从句,连词辨析
【解析】【分析】本题考查while引导的时间状语从句,句意:—当你父母不在家时,你通常做什么?—我做作业。有时候看电视或玩电脑游戏。A项because引导原因状语从句,含义为“因为,由于”,B项引导时间状语从句,含义为“当…时候”,C项but为并列连词,含义为“但是”,D项before引导时间状语从句,含义为“在…之前”。根据题意,B项正确。
【点评】本题重点考查while引导的时间状语从句,把四项答案带入句中,可知答案。
17.【答案】C
【考点】时间状语从句
【解析】【分析】句意:——你现在不能过马路。你不得不等到交通灯变成绿色。A. 当······时候,B. 在······之后,C. 直到,引导时间状语从句,D. 当······时候,wait是延续性动词,和until连用,表示等这个动作延续到交通灯变绿的时候,故选C。
【点评】考查时间状语从句的连接词。根据语境选出合适的连词。
18.【答案】D
【考点】时间状语从句,连词辨析
【解析】【分析】as因为,随着;since由于,自从……以来; until直到;before在……之前。句意:半夜有人给我打电话,但是在我回电话之前,他们就挂断了。结合语境可知选D。
【点评】连词在句子中主要起联系上下文的作用,他们之间的区别就是表示逻辑关系的不同,所以在解题时先要理解上下文含义,然后根据上下文逻辑关系选择合适的连词。连词的用法都比较多,语义之间还有交叉,熟记其基本应用规则,了解其区别,注意固定搭配对象,是做好此类题型的关键。
19.【答案】A
【考点】时间状语从句,连词辨析
【解析】【分析】until直到;while然而,当……时; if是否,如果;unless除非,如果不;句意:——昨天晚上你的父亲什么时候回来的?——直到他完成所有的工作,他才回来。结合语境可知选A。
【点评】连词在句子中主要起联系上下文的作用,他们之间的区别就是表示逻辑关系的不同,所以在解题时先要理解上下文含义,然后根据上下文逻辑关系选择合适的连词。连词的用法都比较多,语义之间还有交叉,熟记其基本应用规则,了解其区别,注意固定搭配对象,是做好此类题型的关键。
20.【答案】D
【考点】时间状语从句,连词辨析
【解析】【分析】句意:我爸爸直到完成工作才睡觉。before在……之前;after 在……之后;when当……时;until直到。句型:not……until,直到……才……。故答案为D。
【点评】考查连词辨析。熟记单词,掌握句型,注意理解句子的逻辑关系。
21.【答案】C
【考点】时间状语从句,连词辨析
【解析】【分析】句意:自从李华来到南沙他就学习英语。现在他可以和一些外国人说英语。Lihua has studied English是现在完成时,引导状语从句,连词用since,自从。故答案为C。
【点评】本题考查连词辨析,注意时态中连词的应用。
22.【答案】D
【考点】一般现在时代替一般将来时,时间状语从句
【解析】【分析】句意:—我们什么时候在体育中心观看篮球比赛?—直到明天完成工作后。当主语是动作的承受者时,用被动语态。until引导从句,主句用一般将来时,从句用一般现在时。结合句意,故答案选D。
23.【答案】B
【考点】时间状语从句,连词辨析
【解析】【分析】句意:直到我看完我最喜欢的电视节目我才睡觉。词组:Not+非延续性动词+until...:直到……才……。故选B。
24.【答案】A
【考点】时间状语从句,连词辨析
【解析】【分析】A. when 当……的时候;B. after在……之后;C.although 仅管;虽然; D. unless除非;如果不。句意:当有必要的时候,不要害怕寻求帮助。结合语境可知选A。
【点评】考查连词的辨析。
25.【答案】D
【考点】第三人称单数,时间状语从句
【解析】【分析】句意是:——彼得,明天汤姆一回来就告诉他来我办公室。——好的,我会告诉他的。as soon as 一……就……,引导时间状语从句,时态用主将从现,从句的主语he是第三人称单数,动词用三单形式comes,故选 D。
26.【答案】C
【考点】时间状语从句,连词辨析
【解析】【分析】after soon无此说法;soon as无此说法;as soon as一……就……;till直到。句意:我一看见他,我就告诉他。结合语境可知选C。
【点评】连词在句子中主要起联系上下文的作用,他们之间的区别就是表示逻辑关系的不同,所以在解题时先要理解上下文含义,然后根据上下文逻辑关系选择合适的连词。连词的用法都比较多,语义之间还有交叉,熟记其基本应用规则,了解其区别,注意固定搭配对象,是做好此类题型的关键。
27.【答案】D
【考点】时间状语从句,连词辨析
【解析】【分析】本题考查not…until结构,表示直到…才,它通常与be动词,情态动词或是助动词连用,故选D。句意:直到你完成工作,你才能取回你的足球。because表示原因,after表示….之后,而when表示当…的时候。
28.【答案】B
【考点】时间状语从句,连词辨析
【解析】【分析】句意:-打扰一下,现在轮到我了吗?-还没有。请在椅子上坐着等,直到听见叫你的名字。and 和,表示并列;until直到…时候;although虽然,尽管;since自从。根据句意可知,这里说的是一直等到叫他的名字,故选B。
【点评】考查连词。
29.【答案】D
【考点】时间状语从句,固定搭配,连词辨析
【解析】【分析】句意:——妈妈,我现在可以看比赛节目吗?——对不起,你直到打扫了你的房间才可以看。not ……until直到……才。故选D。
【点评】考查引导状语从句的连词辨析,注意固定搭配。
30.【答案】A
【考点】时间状语从句
【解析】【分析】句意:—你能告诉我你在那里呆多久吗?—直到明天下午。how long多久;how soon多久以后;when何时;how often多久一次。在宾语从句中只能用陈述句语序,不能用疑问句语序。结合答语可知该选A。
31.【答案】C
【考点】时间状语从句,连词辨析
【解析】【分析】句意:他犯了一个错误,但是他接着采取了措施在情况恶化之前改变了这种状况。before意为“在……之前”,即在形势恶化之前采取措施;故选C。
【点评】考查连词的用法。
32.【答案】A
【考点】时间状语从句
【解析】【分析】句意:你最好在旅行前制定一个好计划。before在……前;during在……期间;until直到;after在……之后。根据句意可知选A。
【点评】考查引导时间状语从句的关联词辨析。
33.【答案】C
【考点】时间状语从句
【解析】【分析】句意:昨天有很多作业。我直到昨天晚上11点才完成。on在……上面;for为了;until直到; from来自。not ...until...“直到……才……”,故选C。
【点评】本题考查时间状语从句,not ...until...“直到……才……”,是固定搭配,引导时间状语从句。
34.【答案】A
【考点】时间状语从句,连词辨析
【解析】【分析】本题考查be doing...when,译为Amy正在读书突然我进来了。本题易错选while, while从句多用延续性动词,本题中come为瞬间动词,故选A。
35.【答案】A
【考点】时间状语从句,连词辨析
【解析】【分析】句意:因为缺乏锻炼,许多学生都不健康。——我同意。他们应该开始锻炼,不要等到来不及了。A. before 在……之前;B. until到……为止;C. since 自从;D. after在……之后。此处it's too late与before共同组成从句,表示“不要等到为时已晚;趁着还来得及”,这是一种常见用法。故答案为A。
36.【答案】B
【考点】时间状语从句,连词辨析
【解析】【分析】句意:外面在下雨,直到雨停再离开吧。when当…时候;until直到…时候;though尽管;so因此。这句话使用的句型是not…until…,直到…时候,才…。故答案为B。
【点评】考查引导状语从句的连词辨析,牢记固定搭配。
37.【答案】C
【考点】时间状语从句,连词辨析
【解析】【分析】句意为当孩子们玩耍时,父母能在沙滩上上舞蹈课。根据句意C为最佳。
38.【答案】D
【考点】时间状语从句
【解析】【分析】句意:——你什么时候跟我去公园?——一旦我完成了我的作业。while正当……时候;before在……之前;as当……时;once一旦;根据句意,故选D。
【点评】考查引导时间状语从句的关联词,需要理顺主从句的关系。
39.【答案】B
【考点】时间状语从句,连词辨析
【解析】【分析】句意:许多人直到他们病了才意识到健康的重要性。A. Since自从;B. Until直到;C. While当……时候;D. After在……之后,根据句意"直到……才"应选择连词until,故答案为B。【点评】考查连词的用法,牢记not……until结构。
40.【答案】D
【考点】时间状语从句
【解析】【分析】句意:自从我们的英语老师来这,他就在我们学校教我们英语。A. 当······时候,B. 因为,C. 在······之前,D. 自从,根据主句的时态以及从句的时态可知要用since引导时间状语从句,故选D。
【点评】考查时间状语从句。根据句子的时态选出合适的连词。
41.【答案】C
【考点】时间状语从句
【解析】【分析】句意为:我正在做作业的时候哥哥回来了。根据语境,这里表示的是一过去动作发生在某一正在进行的动作当中,那么这个正在进行的动作用过去进行时。主语为单数,故应选C。
【点评】本题考查时态,while引导的句子要用进行时态
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