时间状语从句及练习
时间状语从句常见的从属连词有：(注意其汉语意义)
when, while, as, before, after, since, until (till) once as soon as, the moment, the minute, immediately, directly, each/every time, the first time, the last time, next time, by the time, whenever等。例如：
Every/Each time I was in trouble, he would come to my help.
I thought her nice and honest the first time I met her.
注意：（1）when, while, as的区别：
1)when引导从句时，主从句的动作有先有后，也可以同时进行,从句的动作可以是持续性的，也可以是短暂的。如：
When I got to the airport, the plane had already taken off. （主先从后）（短暂性）
When I lived there, I used to go to the seaside on Sundays. (同时) （持续性）
When the movie ended, the people went back. （从先主后）
2)while侧重主从句动作的对比，且从句的动词必须是持续性的。如：
While we were chatting she was looking at the time table on the wall．
3)as引导从句时侧重主从句动作同时或几乎同时进行，从句的动作可以是持续性的，也可以是短暂的。如：
Sometimes I watch TV as I am having breakfast．
4）when和while还可以是并列连词，意思分别是“就在这时”，“然而”。如：
I was having a rest on the sofa when the telephone rang．
They were surprised that a child should work out the problem while they couldn’t .
注：并列连词when常用与以下句型中：
①…was/were doing…when…（正在做…突然）
②…was/were about to do…when…（刚要做…突然）
③…was/were on the point of doing…when…(刚要做…突然)
④…had just done…when….(刚一…就)
⑤Hardly/Scarcely had…done…when…(刚一…就)
(2)before引导从句时,词义非常灵活，注意下列句子中的before的词义：
1.Before I could get in a word, the tailor had measured me.(还没来得及…就)
2.We hadn’t run a mile before he felt tired.(还没…就)
3.We had sailed 4 days before we saw land.(…才…)
4.Please write it down before you forget it.(趁还…没就)
(3)till (until) 和not…till (unt il)
1）till (until):主句谓语动词必须是持续性的，意思是“到…为止“如：
He remained there till/until she arrived.
2）not…till (until)…: 主句谓语动词必须是短暂性的，意思是“直到…才”如：She won’t go to bed till/until he returns home.
3）not…until还有强调式和倒装式：
强调句：It is not until he returns home that she will go to bed.
倒装句：Not until he returns home will she go to bed.
(4)几个极易混淆的时间状语从句：
1）It was +时间点+when…（当的时候时间是）
It was 5 am when we arrived at the village.
2）It was/will be+时间段+before…(没过…就／过了…才)
It was/will be two weeks before we met/meet again.
时间状语从句总结
4种 句动作同时发生或从句动作先于主句。(既可引导时间点又可引导时间段) I was thin when I was a child. The film had been on when w e arrived. 2. be about to do … when … be doing …when… be on o ne’s way … when … be on the point of doing …when… had done … when… “ 在那时”“这时”,表示某件事正在发生或刚刚发生，另一动作同时发生 The telephone was ringing when I got home. I was about to go to bed when he came back. W e w ere just on the point of calling you up when you came in. 3. When 还以引导条件状语从句相当于if How can I explain it to you when / if you won’t listen. How can you get good records when you don’t study? When you read it again, the meaning will become clearer to you. 4.When还可引导原因状语从句，“既然” It was foolish of you to take a taxi when you could easily walk there in five minutes. 3种 1. 必须引导持续性动作，强调在一段时间内，主句和从句动作同时发生。 My mother was cooking while I was doing my homework. Please don’t talk so loud while others are working. 2. “然而” 表示轻微转折, 两者对比。 I like watching TV while he likes reading. 3.引导让步状语从句“ 虽然，尽管” While I admit his good points, I can see his shortcomings. 1 As I left the house , I forgot the key.我离开家时，忘记了带钥匙。 As 引导时间状语从句，强调动作并行发生，不指先后。 2. As I get older, I get more optimistic. 随着年龄的增长，我变得更加乐观“随着” 表示时间的推移。 3. He hurried home, looking behind as he w ent. 他匆匆忙忙回家，边走边往后看。“一边…一边…” 4 As he was going out, it began to rain. 当他出去时开始下雨了强调两个动作紧接着发生。 5. As a boy (When he was a boy), he was hopeless at English.
时间状语从句讲解和练习
时间状语从句 用句子表达一件事情或一个行为发生的时间，这个句子就叫时间状语从句。时间状语从句根据其所表示的时间不同，所使用的连词也不同。下面我们一起来看一下几个常见的时间状语从句： 1．when引导的从句：表示主句的动作和从句的动作同时发生，或从句的动作发生在主句动作之前。 例如：I was going out when a visitor came. (动词动作同时发生。)我正要出门，有客人来访。 I shall tell her the good news when she comes.她来时，我将告诉她这个好消息。 小试牛刀：I found mother cooking for me. I got home.(when)_______________________________________ He was listening to the radio when I home. (get) 2．while 引导的从句：表示“当……过程中”，强调某一段时间内主句和从句中谓语动词所表示的动作在同一时期发生。由于while从句表示一个持续的行为，所以从句中要用持续性动词，并且持续性动词常用进行时态。 例如：Keep an eye on my little sister while I am away.我不在时，请照看一下我的小妹妹。 While we were watching TV, Jim came in. 我们看电视的时候，Jim进来了。 小试牛刀：It started to rain. We were playing football.(while)_______________________________________ Lucy was cleaning the room Lily was listening to music. 3．as引导的时间状语从句：表示“当……的时候；一边……一边……；随着……”，其从句的主语与主句的主语往往是同一人或物。 例如：She sang as she worked. 她一边工作一边唱歌。=She was singing as she was working. I saw him as he was getting off the bus. 正当他下公共汽车时, 我看见了他。 小试牛刀： we walked, we talked. You will grow wiser you grow older. 4．before引导的从句：一般表示主句的动作发生在从句动作之前。 例如：I didn’t know any English before I came here. 我到这儿来之前，一点英语都不懂。 例如：I had written my report before my father came back. 小试牛刀：He bought the ticket he went to see the film. 5．after引导的从句：表示主句的动作发生在从句动作之后。 例如：After he locked the door, he left. 他锁上门后，就走了。 After he had finished his work, he played a game of chess with his friend. 他做完工作后，和朋友下了一盘棋。 小试牛刀：I will go out to play basketball with you. I finish my homework.(after) _______________________ _ He left the classroom he had finished his homework the other day. 6．since引导的从句：表示“自从……以来”，从句中的动词一般表示动作的起点，用过去时。主句中的动词表示动作延续的情况，一般用现在完成时。如果主句中的动词表示的不是延续的动作而是表示目前的状态，可用一般现在时。 例如：Since he met this good friend, he has made great progress in his studies. 自从遇见了这个好朋友，他已在学习上取得了巨大的进步。 例如：It is twenty years since she joined the Party. 她入党二十年了。（主句中的动词表示的是状态，用现在时。） 小试牛刀：it is five years since we last time.（meet） Mr green has taught in that school since he (come) to China three years ago.
初中英语时间状语从句讲解及练习
语法 29时间状语从句 一、什么是状语从句 状语就是在一句话中表示该句子的时间、地点、方式、原因、条件等成分。状语从句就是用一个从 句表示状语。状语从句根据它表达的意思不同，可分为时间、地点、原因、目的、结果、条件、方式、比较、让步等九类。 与状语一样，状语从句的位置比较灵活。既可置于主句之前（通常用逗号与主句隔开），也课置于主句之后（不需要用逗号与主句隔开），有时甚至可以置于主句之中。 二、时间状语从句 1. 主句和从句同时发生，这类从句由从属连词when, while, as引导。 He was hungry when he came home. I was crying while everyone was laughing. As I walked out, he walked in. as, when, while, 的区别 ① as强调从句的动作与主句动作同时发生及持续，具有at the same time的意思 他继续往下谈的时候，越来越兴奋。 as还可以表示一边??一边??，强调从句和主句中两个动作交替进行或同步进行。 他们边走边聊。 as还有“ 随着”的含义 随着春天的到来，天气暖和起来。 ② when 强调动作点的特定时间，具有at the time that 的意思 当老师走进来的时候，我们都站起来了。 ③ while 表示较长的期间，具有during the time that 的意思 当我在这的时候，我很安全。 2.主句发生在从句之前，这类从句由从属连词before, until 引导 ,before 意为“ 在---之前” until 在肯定句中意为“直到 --- 为止”，在否定句中意为“直到 --- 才”。从句既可置于主句前，也可置 于主句之后。 回家之前我必须干完所有的活。
时间地点原因状语从句
地点状语从句 常用连词：where 特殊连词：wherever (在……的任何地方), anywhere, everywhere 【点拨】地点状语从句与定语从句的区别：where引导定语从句时，从句前应有一个表示地点的名词作先行词；而状语从句前则无需先行词。 Go back where you came from.(where引导地点状语从句)你从哪儿来回哪儿去。Go back to the village where you came from. (where引导定语从句，修饰village)回到你来的那个村子里去。 时间状语从句 常用连词：when, as, while, as soon as, before, after, since , till, until, whenever (每当，一……就……) 特殊连词：the minute, the moment, the second, every time, the day, the instant, immediately, directly, no sooner ... than, hardly ... when, scarcely ... when 1．由when, while, as引导的时间状语从句when，while，as都有“当……时候”的意思。 1) when引导的从句的谓语动词既可以是延续性动词，又可以是瞬间性动词，并且when有时表示“就在那时”，相当于and at that time。 It was raining when we arrived. (指时间点)当我们到达的时候，天正在下雨。 When we were at school, we went to the library every day. (在一段时间内) 我们在学校上学的时候，每天都去图书馆。 We were about to leave when he came in.我们刚要离开，就在那时他进来了。 2) while引导的从句的谓语动词必须是延续性的，并强调主句和从句的动作同时发生(或者相对应)，此外，while有时还可以表示对比。 I like playing football while you like playing basketball. 我喜欢踢足球，而你喜欢打篮球。(对比) He fell asleep while/when reading.看书的时候，他睡着了。 Strike while the iron is hot. (用as或when不可以，这里的while意思是“趁……”) 趁热打铁。 3) as表示“一边……一边”，as引导的句子的动词是延续性的动词，一般用于主句和从句动作同时发生；as也可以强调一先一后。 We always sing as we walk.我们总是边走边唱。(as表示“一边……一边”) Our headmaster laughed as she spoke.我们的校长边谈边笑。 2．由before“在……之前”和after“在……之后”引导的时间状语从句。 It will be four days before they come back．他们要过四天才能回来。 My father had left for Canada just before the letter arrived. 我父亲恰好在信到之前去加拿大了。 After you think it over, please let me know what you decide. 你仔细考虑过以后，请告诉我你是怎样决定的。
时间状语从句练习
时间状语从句练习 时间状从句练习 ( ) 1. While she ____ TV in the sitting room, the bell _____. A. watches, rings B. is watching, rang C. was watching, rang( ) 2. I ____ you the news as soon as you ____ Xi’an. A. will tell, reach B. tell, will arrive in C. will tell, will get to( ) 3. Li Ping was tired yesterday, so he ___ his mother came back from work in the afternoon. A. slept until B. didn’t sleep until C. went to bet until( ) 4. I don’t know if Mr. Wang ___ .If he_, please let me know. A.will come, will come B. comes, will come C. will come, comes( ) 5. We’ll go for a picnic if it ____ this Friday A. won’t rain B. isn’t raining C. doesn’t rain( ) 6. Wang Lin will come to see you ____ he reaches this city. A. before B. while C. as soon as( ) 7. --- Will you come to the dinner party? --- I won’t come unless Jenny ____. A. will invited B. is invited C. invited( ) 8. If you ____ carefully, you ____ the report well. A. will listen, will understand B. will listen, understand C. listen, will understand
时间原因条件状语从句
掌门1对1教育高中英语 时间、原因、条件状语从句 一．when, while 和as 引导时间状语从句的区别用法（一）when 的用法when 从句的A事件，相当于另一个事件B发生的时间点。（也就是说，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。（口头练习） When I got to the airport, the guests had left. Why do you want a new job when you have got such a good one already? (二)while 的用法 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。而另一件事的状态根据具体情况而定。（口头练习） 1. While my wife was reading the newspaper, I was watching TV. 2. While Jim was mending his bike, Lin T ao came to see him. 从时间的角度来看，while 表示的是一段时间，是一个过程。 趁热打铁。Strike while the iron is hot.（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。） (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。as 从句用的一般不用正在进行时，而只是一般过去时。可以翻译成“边……边……”。（口头练习） As my mother sang those old songs, tears ran down her cheeks. The students took notes as they listened. 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，常常翻译成“随着……”之意。 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. 随着高度的增加，大气越来越稀薄。（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。The sad mother sat on the roadside, shouting as she was crying. 伤心的妈妈坐在路边，边哭边叫喊。）
时间状语从句讲解讲课教案
（adverbial clause of time） 概念：在复合句中，由时间连接词引导的状语从句叫做时间状语从句。(在复合句中，要注意主句和从句的时态大多都要保持一致。） 1.由when, while, as，after,before,since,untill,引导的时间状语从句。例如： When you think you know nothing, then you begin to know something.当你以为自己一无所知的时候，你就是在开始知道一些事物了。 When truth is buried under the ground it grows, it chokes, it gathers such an explosive force that on the day it bursts out , it blows up everything with it.当真理被埋在地下的时候，它在生长，它感到压抑，它蓄存着这么一种爆炸性力量，一旦冒出，它就会炸破一切！ Strike while the iron is hot. 趁热打铁。 You can feel the air moving as your hand pushes through it. 当你的手在空气中挥动的时候，你就能感觉到空气在流动。 Our headmaster laughed as she spoke.我们的校长边谈边笑。 主要时态：主过从过；主将从现；主句为一般现在时，从句不受影响。 编辑本段when, while和as的区别 when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。并且when 有时表示“就在那时”。例如： When she came in, I stopped eating.她进来时，我停止吃饭。(瞬时动词) When I lived in the countryside, I used to carry some water for him. 当我住在农村时，我常常为他担水。（延续性的动词） We were about to leave when he came in.我们就要离开，就在那时他进来了。 While引导的从句的谓语动作必须是延续性的，并强调主句和从句的动作同时发生（或者相对应）。并且while有时还可以表示对比。例如： While my wife was reading the newspaper, I was watching TV. (was reading 是延续性的动词，was reading和was watching同时发生) I like playing football while you like playing basketball.我喜欢踢足球，而你喜欢打篮球。（对比） As表示“一边……一边”，as引导的动作是延续性的动作，一般用于主句和从句动作同时发生；as也可以强调“一先一后。例如： We always sing as we walk.我们总是边走边唱。（as表示“一边……一边”）As we was going out, it began to snow.当我们出门时，开始下雪了。（as 强调句中两个动作紧接着先后发生，而不强调开始下雪的特定时间） 2.由before和after引导的时间状语从句。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 引导的主句谓语用的是过去完成时，则从句动词多用一般过去时，这样以便体现动作发生的先后。After表示主句动作发生在从句动作之后。主句和
时间状语从句讲解与练习
时间状语从句讲解与练习
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. 他小时候就常常试验一些新的设想。 2. When she came into my room, I was just reading a book. 她走进我房间时，我正在看书。 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。 5. He was on the point of leaving when someone knocked at the door. 他正要走，这时有人敲门。 6. I thought of it just when you opened your mouth. 就在你要说话的时候，我也想到了。 7. I had hardly[scarcely] closed my eyes when someone knocked at the door. 我刚一闭上眼，就有人在敲门了。
根据以上的例句，我们可以总结出一点：when 从句的A事件，相当于另一个事件B发生的时间点。也就是说，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。 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。 1. When I got to the airport, the guests had left. 当我赶到飞机场时，客人们已经离开了。 2. When he had finished his homework, he took a short rest. 当他完成作业后，他休息了一会儿。 3. Why do you want a new job when you have got such a good one already? 你已经找到如此好的工作，为何还想再找新的？ 4. You shall borrow the book when I have
时间状语从句和原因状语从句1
时间状语从句和原因状语从句 I. 选最佳答案 1. I learnt her hard-working and kind _______ I got to know her in the bookstore. A. first time B. for the first time C. the first time D. by the first time 2. It was not _______ he took off his dark glass I realize who he was. A. when; that B. until; when C. when; then D. until; that 3.It was 19 years _______ Mandela, the former president of South Africa, was set free from prison. A. before B. since C. until D. that 4. _______ had the bell rung _______ the students took their seats. A. Hardly; when B. No sooner; when C. Hardly; than D. No sooner; then 5. We walked along the beach for nearly three hours _______ we saw a boat on the sea. A. when B. before C. unless D. until 6. The two brothers quarreled and quarreled _______ they felt sleepy and went to bed. A. when B. before C. unless D. until 7. —What was the party like? —Wonderful. It’s years _______ I enjoyed myself so much. A. after B. before C. when D. since 8. It was quite a long time _______ I made it out what had happened. A. after B. before C. when D. since 9. _______, he went upstairs to sleep without supper. A. He was tired B. As he was tired C. Tired as was he D. As tired as he was 10. We sent the injured to the First-aid Centre_______ the accident happened. A. immediately B. hurriedly C. quickly D. shortly
高中时间状语从句和练习[含答案解析]
状语从句 状语从句在句中作状语，修饰主句中的动词、形容词或副词等。状语从句放在主句之前时，常用逗号分开;放在主句之后，一般不用逗号。状语从句按其意义和作用可分为时间、原因、地点、条件、让步、目的、结果、方式、比较等9种。 1.时间状语从句 时间状语从句表示主句动作发生的时间，主要由when，while，as ; before, after; till (until); once, by the time, as soon as, no sooner ... than和hardly ... when及名词词组the moment等引导。 1) when“在……的时候”; while “在……期间”; as “正当……的时候” when意为“在……的时候”，强调“特定时间”。 When spring came, he felt like a trip. When he was eating his breakfast, he heard the doorbell ring. 说明：连词when在状语从句中还有如下几种含义： ①表示突然发生的事，含义为“（正在……时）忽然”。 I was just coming along to see you when I ran into Wilson. I had been working a couple of months when I had a letter from Jane. ②表示过早发生某事，意为“（还没……）就”。此含义有时可用before代替。 I hadn’t been reading for half an hour when I heard steps outside. 我刚读了不到半个小时就听到外面有脚步声。 I had been there little more than a week when I set to work in earnest. ③表示“在……的情况下”，常可译为“虽然”，“既然”，“如果”。 She refuses help when (although) she has many friends. Why do you walk when (since) you have a car? How can I help them to understand when (if) they won’t liste n to me. ④后接虚拟结构，含义为“本可以，应该……”。 He stopped trying when he might have succeeded next time. They were playing when they could have been working. while意为“在……期间”，从句用持续性动词，表时间的一段，而不是一点。 While he was eating his breakfast, he heard the doorbell ring. We must strike while the iron is hot. 说明：连词while在状语从句中还有如下几种含义： ①意为“然而，但是”，表示前后对照，说明两种情况相反 Tom is very outgoing, while Jane is shy and quiet. Some people waste food while others haven’t enough.
when时间状语从句讲解教案教程文件
资料收集于网络，如有侵权请联系网站删除状语从句之时间状语从句 一．概念及分类名。复合句中从句可分为定语从句，和句子可以分为简单句，并列句复合句词性从句和状语从句。 用来修饰谓语动词，其他动词，定语，状语或整个句子的从句叫做状语从句。状语从句可分为：时间状语从句、地点状语从句、原因状语从句、条件状语从句、目的状语从句、让步状语从句、比较状语从句、方式状语从句、结果状语从句。 DaMing is a brave boy. DaMing is a brave boy and he always does something special. DaMing is a brave boy, who always does something special.
可编辑word 资料收集于网络，如有侵权请联系网站删除二，时间状语从句 When, while, as, before, after, since, 引导时间状语从句的连接词一般有等。，until/tillas soon as When 观察下面例句，总结其用法 1.When he was a child he was always trying out new ideas. 他小时候就常常试验一些新的设想。 2. When she came into my room, I was just reading a book. 她走进我房间时，我正在看书。 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。 总结：从句表示动作可以______________也可以_________________,主句和从句的先后关系_______________________________________ When从句一般用于过去时比较多，主句无时态限制。 练习 Eg: When I got to the airport, the guests had left. 当我赶到飞机场时，客人们已经离开了。 可编辑word 资料收集于网络，如有侵权请联系网站删除When he had finished his
时间状语从句地引导词
时间状语从句的引导词 when, before, after, as, while, till/until, since，whenever 时间状语从句的用法 时间状语从句的引导词所表示的意思不尽相同，要注意把握不同的时间状语从句的引导词所表示的不同时间关系，以及它在具体句子中对应的对应时态、语态等问题。 1. when、as、while引导的时间状语从句分析： (1) when引导时间状语从句时表示“当……的时候”，when既可以指时间段也可指时间点，从句中既可用短暂性动词又可用延续性动词，且动作既可和主句的动作同时发生又可在主句的动作之前或之后发生。 注意体会如下例句： I’ll call you when I get there. 我一到那里就给你打电话。 When the wind blows, all the doors rattle. 只要风一吹，这门就吱嘎作响。
When I came home my wife was cooking dinner. 我回家时，妻子在做晚饭。 如果when引导的时间状语从句的主语与主句主语相同，而从句的谓语又是be动词时，那么从句中的主语和be 可以省略;当when引导的时间状语从句的主语与主句主语相同时，往往还可以用“when+分词”的形式替代该状语从句。例如： When (you are) in trouble, ask her for help. 当你遭遇麻烦的时候去向她求助。 When I came into the room (=When coming into the room), I found him lying there asleep. 当我进入房间的时候，我发现他躺在那儿睡着了。 (2) while引导时间状语从句时表示“当……的时候”，它强调主句的动作与从句的动作同时持续地进行，用于这一用法时while引导的时间状语从句和主句中的谓语动词必须是延续性动词，或者主句的动作发生在从句动作的进行过程中，主句中的谓语动词通常是非延续性动词，例如 Study while you study; play while you play.
时间状语从句和原因状语从句专项练习资料
时间状语从句和原因状语从句专项练习
时间状语从句和原因状语 从句专项练习 1. I learnt her hard-working and kind _______ I got to know her in the bookstore. A. first time B. for the first time C. the first time D. by the first time 2. It was not _______ he took off his dark glass I realized who he was.
A. when; that B. until; when C. when; then D. until; that 3. It was 19 years _______ Mandela, the former president of South Africa, was set free from prison. A. before B. since C. until D. that
4. _______ had the bell rung _______ the students took their seats. A. Hardly; when B. No sooner; when C. Hardly; than D. No sooner; then 5. We walked along the beach for nearly three hours _______ we saw a boat on the sea. A. when B. before C. unless D. until
引导的时间状语从句
1.由when, while, as引导的时间状语从句。 When you think you know nothing, then you begin to know something.当你以为自己一无所知的时候，你就是在开始知道一些事物了。When truth is buried under the ground it grows, it chokes, it gathers such an explosive force that on the day it bu rsts out , it blows up everything with it.当真理被埋在地下的时候，它在生长，它感到压抑，它蓄存着这么一种爆炸性力量，一旦冒出，它就会炸破一切！ Strike while the iron is hot. 趁热打铁。 Will you watch my clothes while I have a swim? 我游泳的时候，请你照看一下我的衣服。 You can feel the air moving as your hand pushes through it . 当你的手在空气中挥动的时候，你就能感觉到空气在流动。 Our headmaster laughed as she spoke.我们的校长边谈边笑。 when, while和as的区别 1. when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。并且when有时表示“就在那时”。 例如： When she came in, I stopped eating.她进来时，我在吃饭。(瞬时动词) When I lived in the countryside, I used to carry some wate r for him.当的住在农村时，我常常为他担水。（延续性的动词） We were about to leave when he came in.我们就要离开，就在那时他进来了。 2. While引导的从句的谓语动作必须是延续性的，并强调主句和从句的动作同时发生（或者相对应）。并且while有时还可以表示对比。例如： While my wife was reading the newspaper, I was watching TV. (was reading是延续性的动词，was reading和was watching同时发生) I like playing football while you like playing basketball.我喜欢踢足球，而你喜欢打篮球。（对比） 3. As表示“一边……一边”，as引导的动作是延续性的动作，一般用于主句和从句动作同时发生；as也可以强调“一先一后。例如： We always sing as we walk.我们总是边走边唱。（as表示“一边……一边”） As we was going out, it began to snow.当我们出门时，开始下雪了。（as强调句中两个动作紧接着先后发生，而不强调开始下雪的特定时间） as when while的辨析 as when while都表示主、从句动作同时发生，三者差异如下：
状语的具体讲解时间状语
句子成分之——－状语的具体讲解（二）时间状语 具体用法：时间状语 导读：一、能做状语的成分 1.名词做状语 2.介词短语做状语（介绍了很多搭配时间的介词） 3.时间状语从句（分别介绍了不同引导词用法） （1）表示“当…时候” while,when,as （2）由before和after引导的时间状语从句 （3）until 和 till表示“直到” （4）since表示“自从”或者“自从这件事结束” （5）由as soon as, 表示“一…就…” （6）by the time each time, every time 二、常用时态中的标志性时间状语 一、能做状语的成分 1. 名词作状语 常做状语的名词有： today, yesterday, tomorrow, this 或that + morning/afternoon/evening/night/day/week/month/year…名词做主语放在句首句尾都可以： Yesterday, I got my new book published. =I got my new book published yesterday. 昨天我出版了我的新书。 2. 介词短语做时间状语 表示在某时间.常用介词at，on，in等。 用at 来表示在某一段时刻： at dawn/daybreak：在黎明 at six ：在6点钟 at midnight ：在午夜 用at 来表示在……岁时 at sixteen/at the age of sixteen ：16岁的时候
用on 来表示在星期几/某日 on Monday ：在星期一 on January fifth：在1月5日 on Christmas Day ：在圣诞节那一天也可用at Christmas on New Year's Day：在新年那天 用in来表示一天中的早中晚，月份，季节或年份 in the morning/afternoon/evening在早晨，下午，晚上 in January/ February在一月，二月 in Spring在春天 in 2014在2014年 表示期间常用介词during，for，over，within，throughout，from和to等。 during／within 用来表示在一段时间内，区别是 during 可以加名词和时间，within后只能加时间。 during the Middle Ages：在中世纪 during 1942 ：在1942年中 during the summer（of that year）：在（那一年的）夏季 during his childhood ：在他童年时期 during two years＝within two years for用来表示动作或状态持续了一段时间，（要与完成时搭配） for six years ：六年之久 for two months ：有两个月 for ever ：永远 表示其他时间概念的介词有before，after，since，until，till，between，up to等 3.时间状语从句 引导时间状语从句的连词，常见的有 before, after, when while, as, since, till, unil, as soon as 等 （1）表示“当…时候” while,when,as