when时间状语从句讲解教学导案

when时间状语从句讲解教学导案
when时间状语从句讲解教学导案

when时间状语从句讲解教案

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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。

When引导的定语从句与时间状语从句的区分

一、从句是如何出题的? 1. 时态 2. 考连接词 3. 考语言顺序 二、学好从句的两个基本条件 1. 时态 2. 从句的三个必须:①必须是句子;②必须有连接词;③必须是陈述句 三、状语从句、宾语从句、定语从句重点 1.如何判断何种从句 2. 从句的时态 3. 从句的连接词与扩展 4. 经典单选、从句与选词、长句子分析 四、如何判断三种从句 1. 状语从句无先行词 2. 宾语(表语)从句无先行词有动词或词组 3. 定语从句先行词多为名词或代词 一、When引导的定语从句与时间状语从句的区分 1. when的译法不同。在时间状语中,when 翻译成“当……的时候” I want to be a teacher when I grow up. 当我长大的时候,我要做一名老师。在定语从句中,when不翻译。I won't forget the day when he says he loves me. 我不会忘记他说爱我的那一天。 2. 在时间状语中,when从句前面或后面是句子;定语从句中,when 从句不能位于句首,且通常when前为表示时间的名词day、year等。 3. when在从句的作用不同。在时间状语从句中,when是连词,只起连接主句和从句的作用,不做从句的任何成分。不过when引导的时间状语从句修饰主句的谓语,做主句的时间状语。 在定语从句中,when是关系副词,在从句中代替先行词做从句的时间状语,修饰从句的谓语。 例1 I will always remember the days when I lived with my

grandparents in the country. 例2 I always remember the days in the country when I see the photo of my grandparents. 点评:例1意为“我会永远记得跟我祖父母一起住在乡下的那些日子”,其中when 引导的是一个定语从句, 修饰the days, when在从句中作时间状语。例2意为“当我看到祖父母的照片时,总是会想起在乡下的那些日子”,其中when 引导的从句并不修饰前面的名词the country,因此可判定为时间状语从句。 例1中的when可用in which替代,即从句可改为...in which I lived with my grandparents in the country. 例2中从句前有名词,但根据句意可 知并不是从句所修饰的对象,也不能用“介词+ which”来替代。 二、判断关系代词与关系副词 方法一:用关系代词,还是关系副词完全取决于从句中的谓语动词。及物动词后面无宾语,就必须要求用关系代词;而不及物动词则要求用关系副词。例如: This is the mountain village where I stayed last year. 这是我去年呆过的山村。 I'll never forget the days when I worked together with you. 我永远不会忘记与你共事的日子。 判断改错: 1. This is the mountain village where I visited last year. 2. I will never forget the days when I spent in the countryside. 3. This is the mountain village (which)I visited last year.

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.

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

When引导的定语从句与时间状语从句的区分

一、从句是如何出题的 1. 时态 2. 考连接词 3. 考语言顺序 二、学好从句的两个基本条件 1. 时态 2. 从句的三个必须:①必须是句子;②必须有连接词;③必须是陈述句 三、状语从句、宾语从句、定语从句重点 1.如何判断何种从句 2. 从句的时态 3. 从句的连接词与扩展 4. 经典单选、从句与选词、长句子分析 四、如何判断三种从句 1. 状语从句无先行词 2. 宾语(表语)从句无先行词有动词或词组 3. 定语从句先行词多为名词或代词 一、When引导的定语从句与时间状语从句的区分 1. when的译法不同。在时间状语中,when 翻译成“当……的时候”I want to be a teacher when I grow up. 当我长大的时候,我要做一名老师。在定语从句中,when不翻译。I won't forget the day when he says he loves me. 我不会忘记他说爱我的那一天。 2. 在时间状语中,when从句前面或后面是句子;定语从句中,when从句不能位于句首,且通常when前为表示时间的名词day、year等。 3. when在从句的作用不同。在时间状语从句中,when是连词,只起连接主句和从句的作用,不做从句的任何成分。不过when引导的时间状语从句修饰主句的谓语,做主句的时间状语。 在定语从句中,when是关系副词,在从句中代替先行词做从句的时间状语,修饰从句的谓语。 例1 I will always remember the days when I lived with my grandparents in the country. 例2 I always remember the days in the country when I see the photo of my grandparents. 点评:例1意为“我会永远记得跟我祖父母一起住在乡下的那些日子”,其中when 引导的是一个定语从句, 修饰the days, when在从句中作时间状语。例2意为“当我看到祖父母的照片时,总是会想起在

When引导的三类从句

When引导的三类从句 When作为连词,可以引导名词从句、定语从句和时间状语从句。请看下面这段短文,其中就出现了when引导的这三类从句。 1. (a) Many students say that their time at university is when they can experience pure love. (b) This is a time when love is innocent when two people come together for love, rather than a house, car or a good job. There are no pressures from parents to get married as they are still young. (c)It is a time when they can choose who they love and how they love away from outside pressure. Even though the relationship may break up, it will bring sweet memories in later years. 很多学生都说,在大学期间才能经历真正纯真的爱情。在此期间,爱是单纯的,两个人走到一起完全是因为爱,而不是为了房子、车子或者好工作。由于还年轻,他们也不会迫于父母的压力而结婚。这一期间,他们可以不受外界的任何干扰而去选择自己爱的对象和爱的方式。即使最终两人分手了,这期间的爱情也会成为日后甜蜜的回忆。 上面的小短文中出现了四个when引导的从句,下面笔者逐一分析各句的结构与类型。首先来看a句: a. Many students say that their time at university is when they can experience pure love. 我们可以看到,这里when引导的从句用在了系动词is后,也就是说,这一从句是一个表语从句(名词从句的一种)。这里的when相当于

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

过去进行时、when和while引导时 间状语从句的区别

过去进行时过去进行时表示过去某一时刻或者某段时间正在进行或发生的动作,常和表过去的时间状语连用,如: 1. I was doing my homework at this time yesterday. 昨天的这个时候我正在做作业。 2. They were waiting for you yesterday. 他们昨天一直在等你。 3. He was cooking in the kitchen at 12 o'clock yesterday. 昨天12点,他正在厨房烧饭。 过去进行时的构成: 肯定形式:主语+was/were+V-ing 否定形式:主语+was not (wasn't)/were not (weren't)+V-ing 疑问形式:Was/Were+主语+V-ing。 基本用法: 1. 过去进行时表示过去某一段时间或某一时刻正在进行的动作。常与之连用的时间状语有,at that time/moment, (at) this time yesterday (last night/Sunday/week…), at+点钟+yesterday (last night / Sunday…),when sb. did sth.等时间状语从句,如: 1)What were you doing at 7p.m. yesterday? 昨天晚上七点你在干什么? 2)I first met Mary three years ago. She was working at a radio shop at the time. 我第一次遇到玛丽是在三年前,当时她在一家无线电商店工作。 3)I was cooking when she knocked at the door. 她敲门时我正在做饭。 2. when后通常用表示暂短性动词,while后通常用表示持续性动词,而while所引导的状语从句中,谓语动词常用进行时态,如: When the car exploded I was walking past it. = While I was walking past the car it exploded. 3. when用作并列连词时,主句常用进行时态,从句则用一般过去时,表示主句动作发生的过程中,另一个意想不到的动作发生了。如: I was walking in the street when someone called me. 我正在街上走时突然有人喊我。 4. when作并列连词,表示“(这时)突然”之意时,第一个并列分句用过去进行时,when引导的并列分句用一般过去时。如:

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

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:

when 引导的从句用法一

when 引导的从句用法一、引导时间状语从句 1. 表示"当……的时候",相当于at the moment when。例如: When we got to the cinema, the film had been on for half an hour. 当我们到达电影院时,电影已放映半小时了。She was writing a letter when I came in. 当我进来时,她在写信。 2. 表示"一……就……",相当于as soon as。例如: The students got up when the bell rang. 铃声一响,学生们就起床了。I'll ring you up when I arrive in Beijing. 我一到北京就给你打电话。 3. 表示"就在这时;当时",相当于just at the moment或just then .例如: We were about to start out when it began to rain heavily. 我们正要启程,就在这时,天下起了大雨。 He had just returned from one business trip when he was asked to make another one. 他刚刚出差回来,这时,又叫他再次出差。 4. 表示"每当;每次",相当于every time或whenever。例如: She always turns to us for help when she is in trouble.每当她遇到困难,她总是向我们求助。It is freezing cold here when it snows. 每当这儿下雪,天气就十分寒冷。 5. 表示"当……之后;在……以后",相当于after the time that。例如: We went home when the film was over. 电影结束以后,我们回家去了。When she got home, she started to prepare supper. 她回到家后,开始准备晚饭。 二、引导条件状语从句 when引导的条件状语从句相当于if/ in case引导的条件状语从句.例如: When there is no gravity, our feet can no longer stay on the ground. 如果没有重力,我们的脚就不能够在地面上站稳。Turn off the switch when anything goes wrong with the machine. 如果机器发生故障,就把电闸关上。 三、引导原因状语从句when引导原因状语从句时,相当于since/now that引导的原因状语从句。例如: How can they learn anything when they spend all their spare time watching television? 他们把所有的空闲时间都用来看电视了,还能学到什么东西呢? Why do you want a new job when you have got such a good one? 既然你已经有了这么好的一份工作,为什么还要再找新的工作呢? 四、引导让步状语从句when引导的让步状语从句相当于though或although引导的让步状语从句。例如: He usually walks when he might ride. 虽然有车可乘,但他通常是步行。 The little girl can tell right from wrong when she is only twelve. 这个小女孩虽然只有十二岁,却能分清是非。 五、引导定语从句when引导定语从句时,有时可用in which或on which来替代。例如:We'll put off the picnic until next week, when the weather may be better. 我们要把野餐推迟到下周,那时可能天气好些。 I'll never forget the day when I joined the Party. 我将永远不会忘记我入党的那一天。 六、引导名词性从句 1. 引导宾语从句。例如: Please tell us when his father will return from abroad. 请告诉我们他父亲什么时候从国外回来。 2. 引导主语从句。例如: When they will leave for Australia hasn't been decided. 他们什么时候动身去澳大利亚还没有决定。 3. 引导表语从句。例如: The question is when they will get so much money to set up the factory. 问题是他们将在什么时候弄到这么多钱来把这个工厂办起来。 when, while 和as 引导时间状语从句的用法 这三个词的意思很简单,都有“当……时候”的意思。但学生经常会问三个词的区别在哪儿,特别是在做选择题的时候。别说是学生,就我个人而言,做这样的选择题要保证百分之百的正确也是不可能的。现根据大量的实例和个人的思考,做一点小结,供大家参考。 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。

时间状语从句连接词讲解

1、时间状语从句 A.when, while, as, whenever; when, while, as 表示主句谓语作和从句的谓语动作同时发生或几乎同时发生。1.when ①When表示点时间时,从句中用短暂性动词;表示段时间时,用持续性动词。 When I got home, my family Were already hav ing dinner.我至U家的时候,全家已在 吃晚饭。 (When 表示点时间) When they Were still talking and laughing, the teacher came in. 当他们还在说笑的时候,老师进来了。(When 表示段时间) He WaVed hello Whe n he SaW her当他看见她的时候,就挥手打了个招呼。(Whe n 表示点时间) When you think you knoW nothing, you begin to knoW something. 当你认为自己一无所知的时候,就开始知道一些事情了。(When表示段时间) 【注意】当Whe n意思是正当.. 时候(and at that mome nt时,Whe n只能跟在 前一分句之后。 He WaS about to go to bed Whe n the doorbel rang他正要上床,忽然门铃响了。 They Were Watching the World Cup When suddenly the lights Went out. 他们正看着世界杯比赛,突然灯灭了。 They had just arrived home Whe n it bega n to rai n 他们刚到家,天就开始下雨了。 ②有时When表示虽然,尽管的含义,相当于although或SinCeO He walks Whe n he might take a taxi.尽管可以打的,但他还是步行。 HoW Can you hope for merCy yourSelf When you ShoW none 既然你不宽恕别人,你自己又怎能希望得至别人的宽恕呢? 2.While ①while通常表示一段时间,从句中宜用持续性动词作谓语。 Strike while the iron is hot .趁热打铁。 She fell asleep while She WaS reading the n ewspape她在看报的时候睡着了。 ②while有时可以作并列连词,表示对比,可译成.... 而.... 。 I am fond of English While he likes math. 我喜欢英语而他却喜欢数学。 We slept while the CaPta in kept WatCh我们睡觉而上尉担任警戒。 ③while有时可引导让步状语从句,意思是虽然。 While they love the Children, they are striCt With them. 虽然他们都爱他们的孩子,但却对他们要求严格。 虽然during 与While 意思很相近,但是during 是介词,不能引导从句。 3.as ①as表示点时间时,从句中用短暂性动词;表示段时间时,用持续性动词。as 和When两者经常可以通用。 The thief WaS CaUght as Whe n he WaS SteaIi ng in the SuPermarke小偷在超市行窃时被逮住了。 I SaW Jim as Whe n he left the meeti ng rooπ?姆离开会议室时候我看到了他。 ②as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。 They talked as they WaIked 他们边走边聊。 He looked behi nd from time to time as he went.他一边走,一边不时地往后看。

初中英语状语从句讲解

初中英语状语从句讲解 1.时间状语从句 2. 条件状语从句 3. 原因状语从句 4. 结果状语从句 5. 比较状语从句 6. 目的状语从句 7. 让步状语从句 8. 地点状语从句 2.用来修饰主句中的动词,副词和形容词的从句叫状语从句。根据其含义状语从句可分为时间状语从句,地点状语从句,条件状语从句,原因状语从句,结果状语从句,比较状语从句,目的状语从句,让步状语从句。 1. 时间状语从句 (1)时间状语从句常用when, as, while, before, after, since, till, until, as soon as等连词来引导。例如: It was raining hard when got to school yesterday. While he was doing his homework, the telephone rang. As he walked along the lake, he sang happily. He had learned a little Chinese before he came to China. After he finished middle school, he went to work in a factory. (2)在时间状语从句里,通常不用将来时态,用现在时态表示将来的动作或状态。例如: I'll ring you up as soon as I get to New York. I will tell him everything when he comes back. He won't believe it until he sees it with his own eyes. (3)在带有till或until引导的时间状语从句的主从复合句里,如果主句用肯定式,其含义是“一直到……时”,谓语动词只能用延续性动词。如果主句用否定式,其含义是“直到……才……”, “在……以前不……”, 谓语动词可用瞬间动词。例如: The young man read till the light went out. Let's wait until the rain stops. We won't start until Bob comes. Don't get off until the bus stops. 2. 条件状语从句 (1)条件状语从句通常由if, unless引导。例如: What shall we do if it snows tomorrow? Don't leave the building unless I tell you to. (2)在条件状语从句里,谓语动词通常用现在时态表示将来的动作或状态。例如: I'll help you with your English if am free tomorrow. t be late unless he is ill. 'He won (3)“祈使句 + and (or)+ 陈述句”在意思上相当于一个带有条件状语从句的

(完整版)初中时间状语从句语法及练习

英语时间状语从句讲解与练习 (一)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。 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。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: 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? 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 they were talking, the bell rang. 正在他们谈话的时候,上课铃响了。 2. You can’t do your homework while you’re watching TV. 你不能一边看电视一边做家庭作业。 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。 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. 当我妈妈唱起那些老歌时,眼泪顺着她的脸颊流了下来。 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. 我们继续往下谈的时候,他越来越兴奋。 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。 1. As the time went on,the weather got worse. 随着时间的推移,气候更加糟糕。 2. As years go by,China is getting stronger and richer. 随着时间一年一年过去,中国变得越来越富强了。 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. 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. 当我们跳舞时,一位陌生人走了进来。[dance 为延续性动词] 2. When /While /As she was making a phone call, I was writing a letter. 当她在打电话时,我正在写信。[make为延续性动词] 3. While/When/ As I was walking down the street, I noticed a police car in front of the

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