时间状语从句

1、时间状语从句 时间状语从句就是在复合句中表示主句动作发生时间的状语从句。时间状语从句是所有状语从句中用得最经常的一种，并且用于引导时间状语从句的引导词也比较多，在学习时间状语从句时最重要的是记住这些引导词有哪些，它们的意思怎样等。到底时间状语从句可以用哪些词来引导呢？请看下文：1. 用when引导：when表示“当时候”。如：Things were different when I was a child. 我小时候情况与现在不同。People breathe more slowly when they are asleep. 人睡觉时呼吸比较缓慢。2. 用while引导：while

2、表示“当时候”。如：We must strike while the iron is hot. 我们要趁热打铁。I went swimming while the others played tennis. 我去游泳，其余的人都打网球去了。注意：while 所引导的时间状语从句中谓语动词必须是持续性的，不能是短暂性的。3. 用as引导：as表示“当时候”“随着”。如：He dropped the glass as he stood up. 他站起来时，把杯子摔了。We get wiser as we get old. 随着年岁的增长，我们也变得聪明些了。4. 用before引导：before表

3、示“在之前”。如：Turn off the lights before you go to bed. 睡觉前要关灯。Before he went to university he was a worker. 上大学之前他是工人。5. 用after引导：after表示“在之后”。如：I will tell you after they leave. 他们走我再告诉你。After you finish the letter show it to me信写完后给我看看。6. 用until / till引导：until / till表示“直到”。如：He waited until she was ab

4、out to leave. 他等着一直到她准备离开。I watched him until he disappeared in the distance. 我瞧着他直到他在远处消失。这类句型的主句动词通常只能是延续性动词，不能是终止性动词。但是，在否定句中，主句动词可以是终止性动词，此时构成notntil till句式，意为“直到才”。如：She didnt marry until she was over fifty. 她直到五十多岁才结婚。Wed better not go until your sister arrives. 我们最好等你姐姐到了再走。7. 用since引导：since表

5、示“自从以来”。如：We have known each other since we were children. 我们从小认识。Theyve moved twice since they got married. 他们结婚后已搬了两次家。这类句子的主句通常用现在完成时。但是，当主句表示一段时间时，可用一般现在时代替现在完成时。如：Its a long time since we met last. 好久没见面了。How long is it since you came in London? 你来伦敦有多久了?8. 用as soon as引导：as soon as表示“一就”。如：The

6、boys ran off as soon as we appeared. 我们一来，孩子就都跑了。He started as soon as he received the news. 他一接到消息就出发了。表示“一就”这一意思的连词，除as soon as外，还可用the moment, the minute, the instant等。如：I want to see him the minute he arrives. 他一来到我就要见他。The moment I saw him I knew there was no hope. 我一看到他就知道没希望了。9. 用every time等引

7、导：any time, each time, every time, the first time, the last time, the next time等有时也可用连词，引导时间状语从句，分别表示“任何时候”“每次”“第一次”“最后一次”“下次”等。如：You can call me any time you want to. 你随时都可以给我打电话。Each time I went there, I saw him working. 我每次去那儿都看见他在工作。Every time I call on him, he is out. 我每次去访问他，他都不在。Next time you

8、 come in, please close the door. 下次你进来，请关门。10. 时间状语从句的时态：当主句为将来时态或含有将来意义时，时间状语从句习惯上要用一般现在时表示将来意义，而不能直接使用将来时态。如：趁早动手，免得忘了。误：Do it before you will forget.正：Do it before you forget.before引导的时间状语从句不能直接使用将来时态，而通常用现在时表示将来意义。让步状语从句 1. 用although / though引导：although与though虽然拼写不同，但意思相同，都表示“虽然”，常可互换。如：Tho

9、ugh they are twins, they look entirely different. 他们虽是孪生，但是相貌却完全不同。Although she didnt say anything I sensed (that) she didnt like the idea. 她虽然什么也没说但我已意识到她不喜欢这个主意。注意，不要按汉语习惯说althoughbut。如：尽管她父亲在公司里，但她那份工作却是靠自己得到的。误：Although her father is in the firm, but she got the job on her own.正：Although her fat

10、her is in the firm, she got the job on her own. 2. as 作“虽然”解，引导让步状语从句时，从句中的状语、表语或动词必须置于句首，though 引导的让步状语从句，也可将这些成分置于句首，但 although 等其它词引导的让步状语从句不能将这些成分前置。如：Hard as/though they tried (=Although/Though they tried hard), they couldnt make her change her mind. 尽管他们做了很大努力，却没法让她改变主意。引导让步状语从句时，若提前的是可数名词单数，要

11、省略不定冠词。如：Child as he is, he knows a lot. 虽然他是孩子，但他却很懂事了。3. 用even though / even if引导：even though和even if意思相同，均表示“即使”，常可互换。如：Even though you have a lot of money, I wont love you. 即使你有很多钱，我也不会爱你。Even if you saw him pick up the money, you cant be sure he stole it. 就算你看见是他拾起的钱，你也不能肯定钱就是他偷的。4. 用whetheror引

12、导：whetheror的意思是“无论还是”“不管还是”。如：Ill do it whether you like it or not. 不管你是否喜欢，我都要做。Whether we help him or not, he will fail. 不论我们帮助他与否, 他都将失败。5. 用特殊词引导：除上面提到的最常用的引导让步状语从句的词语外，有时还可用那些以-ever结尾的词语来引导，如whatever, whoever, however, whenever, wherever等，它们的意思与no matter what, no matter who, no matter how, no m

13、atter when, no matter where等，意思是“无论什么”“无论是谁”“无论多么”“无论什么时候”“无论什么地方”等。如：Whatever you say, I believe you. 无论你说什么，我都相信你。Whoever telephones, tell them Im out. 不管是谁打电话，都说我出去了。However much he eats, he never gets fat. 无论他吃多少，他都不发胖。6.另外，还有一个大家比较熟悉的词也可引导让步状语从句，那就是while，它除了表示“当时候”外，还可表示“尽管”“虽然”，此时引导的是让步状语从句。如：

14、While we dont agree we continue to be friends. 尽管我们意见不同，我们还是朋友。表示“虽然”的连词不能与表示“但是”的连词 but 连用，但可以 yet 或 still 等副词连用。如：译：虽然当时正下着雨，他还是到那里去了。误：Though it was raining, but he went there.正：Though it was raining, he went there.正：It was raining, but he went there.正：Though it was raining, yet he went there.条件状

15、语从句 条件状语从句就是在复合句中表示主句动作发生条件的状语从句。引导条件状语从句最经常用的连词是if，它的意思是“如果”；除此之外，还有其他一些连词，它们也多少含有“如果”的意思，也可用于引导条件状语从句。1. 用if引导：if意为“如果”。如：You cant take photographs if the light is bad. 光线不足，就无法拍照。If you cheat in the exam youll never get away with it. 考试作弊必予追究。2. 用unless引导：unless的意思是“如果不”“除非”。如：Dont act unles

16、s youre certain. 没有把握就不要做。Unless you go at once you will be late. 如果你不马上走，就会迟到的。3. 用as so long as引导：as so long as的意思是“如果”“只要”。如：Ill remember that day as long as I live. 只要我活着，我就不会忘记那个日子。You may take my dictionary as long as you dont keep it too long. 只要使用时间不太长，你可以把我的词典拿去。4. 用in case引导：in case用连词引导条件

17、状语从句时，其意为“如果”“万一”。如： supposing (that)/provided /providing (that)(假如), in case(假使), on condition that(在的条件下)等。如：In case Im late, start without me. 万一我迟到，就不等我了。In case I forget, please remind me about it. 万一我忘记，请提醒我一下。You can learn anything so long as you set your mind to learn it. 用心学本领，总能学到手。I will

18、go there tomorrow unless it rains.(=if it doesnt rain)除非下雨，否则我明天要去那儿。He will do the work providing you pay him. 如果你能付费，他可以做这工作。In case l forget，please remind me about it. 如果我忘了，请提醒我。Well let you use the room on condition that you keep it clean and tidy. 我们可以让你使用这个房间，条件是你把它保持整洁。5. 条件状语从句的时态：当主句为将来时态或

19、含有将来意义时，条件状语从句习惯上要用一般现在时表示将来意义，而不能直接使用将来时态。如：不知道明天是否会下雨，但要是下雨的话，我就呆在家里。误：I dont know if it will rain tomorrow. But if it will rain tomorrow, Ill stay at home.正：I dont know if it will rain tomorrow. But if it rains tomorrow, Ill stay at home.句中的第一个 if 引导的是宾语从句(if是否)，从句谓语用将来时态表示将来意义；第二个if引导的是条件状语从句(if

20、=如果)，从句谓语要用一般现在时表示将来意义。但若从句谓语用了will 或 would，那 will 或 would 则是表示“愿意”的情态动词。如：If you will go with me, Ill wait for you. 如果你愿意等我，我们就帮你做这事儿。 目的状语从句 目的状语从句就是在复合句中表示主句动作发生目的的状语从句。用于引导目的状语从句的连词不多，引导目的状语从句的从属连词有so(以便), that(以便), so that(以便，为了), in order that (为了，以便)；in case(以防，以免), lest(免得，以防), for

21、 fear that(以免，惟恐)等。从句中一般含有can, could, may, might, will, would 等情态动词。如：1. 用in order that引导：in order that的意思是“为了”。如：He studied hard in order that he could pass the exam. 他努力学习以便能考试及格。He left early in order that he should / would / might arrive on time. 他早早动身好按时到达。该结构有时可与 in order to 转换。如：He is working

22、 hard in order to pass the examination.He is working hard in order that he can pass the examination. 为了考试及格，他正在努力学习。2. 用so that引导：so that此时的意思是“以便”。如：Bring it closer that I might see it better. 拿近些，使我能看得清楚些。She burned the letters so that her husband would never read them. 她把信都烧了，这样一来她丈夫就永远看不到了。注意：so

23、 that引导目的状语从句与引导结果状语从句时的意思不一样。3. 用in case引导in case(以防，以免), lest(免得，以防), for fear that(以免，惟恐)等：I always keep a bottle of wine by in case friends call round. 我平时总存着一瓶酒以备朋友来时喝。It may rainyoud better take an umbrella (just) in case it does. 可能会下雨你，最好带把伞，以防万一。注意：in case引导目的状语从句与引导条件状语从句时的意思不一样。Take the r

24、aincoat in case it rains. 带着雨衣, 以防下雨。Be careful lest you fall from that tree. 要当心, 以免从树上摔下来。He walked fast for fear that he should be late. 他走得很快，以免迟到。原因状语从句学习指导 原因状语从句就是在复合句中表示主句动作发生原因的状语从句。用于引导原因状语从句最常用的连词是because，另外还有as, since以及now that等。1. 用because引导：because是引导原因状语从句最常用的连词，其意为“因为”。如：The lit

25、tle boy was crying because he was lost. 那小孩因迷路而哭。I bought the house simply because it was large. 就是因为这所房子大我才买的。2. 用as引导：as也可以用于引导原因状语从句，意思是“由于”。如：As he is ill, he cant come to the meeting. 由于生病了，他不能来参加会议。As you werent there, I left a message. 由于你不在那儿，我留了个信儿。3. 用since引导：since引导原因状语从句时，意思是“既然”。如：Since

26、 you ask, I will tell you. 你既然问，我就告诉你。Since you are going, I will go. 既然你去，我也去。4. 用now that引导：now that引导原因状语从句的意思也是“既然”。如：Now that you have come you may as well stay. 既然你来了，你就留下。Now that youre growing up you must learn to stand on your own two feet. 你既然已经长大成人，就得学会独立生活。5. 习惯用法：不要受汉语意思影响将表示“因为”的连词与表示“

27、所以”的 so 连用。如：既然你很忙，那就不必来了。误：As you are busy, so you neednt come.正：As you are busy, you neednt come.正：You are busy, so you neednt come.as是从属连词，在此引导原因状语从句；so 是并列连词，在此连接一个并列句，所以误句结构混乱，应去掉其中一个。 结果状语从句 结果状语从句就是在复合句中表示主句动作所导致结果的状语从句。用于引导结果状语从句连词也不多，主要的有so that, sothat, suchthat等。1. 用so that引导：so

28、 that引导结果状语从句时的意思是“结果”“所以”。如：Write out this word ten times so that you learn how to spell it. 把这个字抄写十遍就能记住怎么拼写了。I went to the lecture early so that I got a good seat. 我去听演讲去得很早，所以找了个好座位。 2. 用sothat引导：sothat的意思是“如此以至于”，其中的 so 后接形容词或副词。如：He was so angry that he couldnt speak. 他气得话都说不出来。He runs so fast that none of us can catch up with him. 他跑得很快，我们没一个能追上他。3. 用suchthat引导：suchthat的意思是“如此以至于”，其中的 such 后接名词(名词前通常有形容词修饰)。如：It gave him such a shock that his face turned whit