并列连词 when 和引导时间状语从句的从属连词 when 是不同的

并列连词when 和引导时间状语从句的从属连词when 是不同的。这主要表现在以下几个方面：

1. 位置：when 引导时间状语从句时，该从句可放在主句之前也可放在主句之后；而并列连词when 只能位于两个分句之间，而且前面常常有逗号。例如：

Come when you please.

你高兴来就来吧。（when 为从属连词）

When I saw him，he was writing to a friend of his.

我看见他时，他在给一个朋友写信。（when 为从属连词）

I was taking a walk，when I came across him.

我正在散步，突然碰见了他。

2. 意义：when 作从属连词用时，它所引导的从句表示主句中谓语动词动作发生的时间，即作“当……时”解；而并列连词when 连接的两个分句中，第一个分句表示的是背景，第二个分句表示的是一种突然的、意想不到的情况或过早发生的事情。when 通常含“这时突然”之义。例如：

I was thinking of this，when I heard my name called.

我正想着这件事，突然听到有人叫我的名字。

I had just fallen asleep，when the boor-bell rang.

我刚入睡，门铃突然响了起来。

这种意义在孤立的句子中可以理解到，在文章中更能体会得到。如在“I was wandering through the street when I caught sight of a tailor's shop ”一句中，“在街头漫步”只是“看见有家缝纫店”的时间，其后作者怎样走进缝纫店，想要什么样的衣服，怎样受到伙计的奚落，又怎样受到老板的奉承等情景均与“漫步街头”没有直接的因果关系。

3. 时态：when 引导的时间状语从句中可以根据句意的需要用一般现在时、一般过去时、过去进行时、分别说明现在，过去，甚至将来的行为；并列连词when 后面的分句中通常用非延续性动词的一般过去时，其前表时间的分句中可用：

（1 ）过去进行时表示过去某时间正在进行的动作。例如：

I was cooking when I heard her knocking at the door.

我正在做饭，突然听到她敲门的声音。

He was thinking about the problem，when an apple fell to the ground.

他正在思考这个问题，突然有一只苹果掉到了地上。

（2 ）was /were going to，was / were about to，was / were on the point of 表示过去某一时间将要发生的动作。例如：

I was just going when he came in.

我正要走，这时他就进来了。

We were about to start when it began to rain.

我们刚要动身天就开始下起雨来了。

He was on the point of leaving，when someone knocked at the door.

他刚要走就有人敲门。（ 3 ）过去完成时表示过早发生的事情。请看下述两种场合：（a ）过去完成时和含否定意义的hardly，scarcely，nearly 连用，和just，little 连用，或者与否定词not 连用时，表示“刚……，就……”的意思。例如：

I had hardly opened the door when he hit me.

我刚一开门他就打了我一下。

I had nearly reached the town，when the young man suddenly said very slowly，“Do you speak English？”我快要进城了，年轻人突然慢慢地说：“你会讲英语吗？”

I had been there little more than a week when I set to work in earnest.

我到那儿还不超过一个星期就开始认真干起活来。

I had not been reading for half an hour when I heard steps outside.

我读了还不到半个钟头就听到外面有脚步声。

（b ）过去完成时与hardly 等连用时，when 也可以换成before .例如：

Hardly had I left before the trouble started.

我刚一离开麻烦就开始了。

4. 句型：when 引导状语从句时，主句可以是肯定句，也可以是疑问句形式，但when 连接两个并列分句时，其前的分句只能是肯定句，即只能是不带否定副词not 的分句。前文（3 ）（a ）最后一个例句算是一个例外。试比较：

Mick was sleeping when they went in. （并列句）迈克正在睡觉，他们突然走了进来。

When they came in Mick was sleeping. （主从句）他们进来时迈克正在睡觉。

“Was Mick sleeping when they came in？”和“What was Mick doing when they came in？”只能是对其中主句的提问，因为这时when 所引导的分句既无突然性也不是句子中的未知信息，而只是另一个动作发生的特定时间。

when的用法总结大全

when的用法总结大全 when的用法你知道多少，今天给大家带来when的用法，希望能够帮助到大家，下面就和大家分享，来欣赏一下吧。 when的用法总结大全 when的意思 adv. 什么时候,(用于时间的表达方式之后)在那时,其时,当时conj. 在…时,既然,如果 pron. 什么时候,那时 n. 时间，时候,日期,场合 when用法 when可以用作副词 when的基本意思是“什么时候”。可用作疑问副词,用来询问某事曾发生或将要发生的时间,引导特殊疑问句; 还可用作关系副词引导限制性定语从句、非限制性定语从句和表语从句,表示“是…时候的事”。 when可用作从属连词,引导状语从句,表示时间时作“当…时,在…的时候”解; 表示条件时作“如果,要是”解; 表示对比时作“既

然,考虑到”解。当when所引导的从句的主语和主句的主语一致时,常将其主语、系动词或助动词省去,只留实义动词或表语,或者改写为短语。 when所引导的时间状语从句用一般现在时代替将来时,用现在完成时代替将来完成时。 when用作副词的用法例句 When did that happen?那件事是什么时候发生的? They stood respectfully when he entered the room.当他走进房间时，他们都恭恭敬敬地站着。 Iron will melt when it is made very hot.当铁烧得很热时就会熔化的。 when可以用作连词 when可用作从属连词,引导状语从句,表示时间时作“当…时,在…的时候”解; 表示条件时作“如果,要是”解; 表示对比时作“既然,考虑到”解。当when所引导的从句的主语和主句的主语一致时,常将其主语、系动词或助动词省去,只留实义动词或表语,或者改写为短语。 when所引导的时间状语从句用一般现在时代替将来时,用现在完成时代替将来完成时。

高中英语语法——并列句和状语从句

第12讲并列句和状语从句两个或两个以上的简单句用并列连词连在一起构成的句子叫做并列句，其基本结构是“简单句+并列连词+简单句”。并列连词有:and, but, or, so等。状语从句是在句子中起副词作用的句子。根据状语从句在句中不同的作用可分为：时间、地点、原因、目的、结果、条件、方式、让步和比较状语从句。并列连词和从属连词是高考的重要考点之一，在语法填空中通常以无提示词的方式进行考查，在短文改错中主要考查并列连词和从属连词的误用。并列句和状语从句的考点如下：核心考点01考查并列连词并列连词是用来连接两个或多个并列的词、短语或句子的词,主要表示并列、选择、转折、因果等关系。并列连词在句子中位置比较固定,必须位于所连接的并列单位之间;两个并列连词不能并用。 1.表示并列关系的连词表示并列关系的连词有and,both...and...,not only...but also...,neither...nor...等。 2.表示选择关系的连词表示选择关系的连词有or,either...or...等。 3.表示转折关系的连词表示转折关系的连词有but,yet,while等。 4.表示因果关系的连词表示因果关系的连词有for，so。 We listened eagerly, for he brought news of our families. 5.when作并列连词的用法

when除了作从属连词,引导时间状语从句外,还可作并列连词,其意义为“这时,那时”,相当于and at this/that time。常用于下列句式: ①sb.was doing sth.when... ②sb.was about to/going to do sth.when... ③sb.was on the point of doing sth.when... ④sb.had just done sth.when...。如: We were having a meeting when someone broke in. 我们正在开会,这时有人闯了进来。 6.while作并列连词的用法 while除了作从属连词,引导时间状语从句外,也可作并列连词,意为“而,却”,表示对比。如: He likes pop music, while I am fond of folk music. 他喜欢流行音乐,而我喜欢民间音乐。 I like playing the piano while my sister likes playing the violin. 我喜欢弹钢琴，而我妹妹喜欢拉小提琴。典例分析1 (2017北京卷)—Peter, please send us postcards_________ we’ll know where you have visited. —No problem. 【解析】句意:——彼得, 请给我们邮寄明信片, 这样我们就能知道你参观过哪些地方。——没问题。根据句意可知，第一句中前后两个分句为因果关系, 所以填so。【答案】so 典例分析2 He is a shy man, _________he is not afraid of anything or anyone. 【解析】句意:他是一个腼腆的人,但是他不惧怕任何人和任何事。根据前后句意可知,这里需要一个表示转折关系的连词。【答案】but 典例分析3 You have to move out of the way_________ the truck cannot get past you. 【解析】句意:你得让让路,不然卡车过不去。根据句子结构和句意可知,空格处应该用or,表示一个否定的条件,意为“不然的话”。【答案】or

when做并列连词的用法

when 和引导时间状语从句的从属连词when 是不同的。这主要表现在以下几个方面： 1. 位置：when 引导时间状语从句时，该从句可放在主句之前也可放在主句之后；而并列连词when 只能位于两个分句之间，而且前面常常有逗号。例如：Come when you please. 你高兴来就来吧。（when 为从属连词）When I saw him，he was writing to a friend of his. 我看见他时，他在给一个朋友写信。（when 为从属连词）I was taking a walk，when I came across him. 我正在散步，突然碰见了他。 2. 意义：when 作从属连词用时，它所引导的从句表示主句中谓语动词动作发生的时间，即作“当……时”解；而并列连词when 连接的两个分句中，第一个分句表示的是背景，第二个分句表示的是一种突然的、意想不到的情况或过早发生的事情。when 通常含“这时突然”之义。例如：I was thinking of this，when I heard my name called. 我正想着这件事，突然听到有人叫我的名字。I had just fallen asleep，when the boor-bell rang. 我刚入睡，门铃突然响了起来。这种意义在孤立的句子中可以理解到，在文章中更能体会得到。如在“ I was wandering through the street when I caught sight of a tailor's shop ”一句中，“在街头漫步”只是“看见有家缝纫店”的时间，其后作者怎样走进缝纫店，想要什么样的衣服，怎样受到伙计的奚落，又怎样受到老板的奉承等情景均与“漫步街头”没有直接的因果关系。 3. 时态：when 引导的时间状语从句中可以根据句意的需要用一般现在时.一般过去时、过去进行时、分别说明现在，过去，甚至将来的行为；并列连词when 后面的分句中通常用非延续性动词的一般过去时，其前表时间的分句中可用：（ 1 过去进行时表示过去某时间正在进行的动作。例如： I was cooking when I heard her knocking at the door. 我正在做饭，突然听到她敲门的声音。 He was thinking about the problem，when an apple fell to the ground. 他正在思考这个问题，突然有一只苹果掉到了地上。（2 ）was /were going to，was / were about to，was / were on the point of 表示过去某一时间将要发生的动作。例如： I was just going when he came in. 我正要走，这时他就进来了。 We were about to start when it began to rain. 我们刚要动身天就开始下起雨来了。 He was on the point of leaving，when someone knocked at the door. 他刚要走就有人敲门。（3 ）过去完成时表示过早发生的事情。请看下述两种场合：（a ）过去完成时和含否定意义的hardly，scarcely，nearly 连用，和just，little 连用，或者与否定词not 连用时，表示“刚……，就……”的意思。例如： I had hardly opened the door when he hit me. 我刚一开门他就打了我一下。 I had nearly reached the town，when the young man suddenly said very slowly，“ Do you speak English ”我快要进城了，年轻人突然慢慢地说：“你会讲英语吗” I had been there little more than a week when I set to work in earnest. 我到那儿还不超过一个星期就开始认真干起活来。 I had not been reading for half an hour when I heard steps outside.

状语从句类型及相似连词的用法区别

一、状语从句分类及常用连词：类别连词状语从句when, whenever, while, as, before, after, since, till, once, as soon as,etc. 状语从句where,wherever 状语从句because, since, as, for, now that, etc. 状语从句so…that, so that, such…that, that, etc. 状语从句in order that, so that, that, etc. 状语从句if, unless, as(so)long as, etc. 状语从句though, although, even if, even though, however, whatever, as,etc. 状语从句as…as, so…as, than, etc. 状语从句as, as if, as though, etc. 二、相似连词的用法区别 1.when, while, as, while表时间，从句需用延续性动词，切不可用瞬间动词。 when表时间，从句既可以用延续性动词，又可以用瞬间动词。 as表时间，与when相似，但侧重强调主从句动作同点或同段进行。 when, while后可以接分词短语。 2.because, as, since, for 语气位置意义 because最强前或后“原因”；表客观因果关系；回答“”as较强前“由于”；把众人所知的事实当作理由since较弱前“既然”；就对方陈述的事实作为理由for最弱后“理由”；对某一事实进行推断的理由注：上面所说的“前”，指从句在主句之前；“后”，指从句在主句之后。 3.so that, so…that, such…that so that“以便”、“结果”表目的和结果。注意：在从句中有情态动词表目的。无情态动词表结果。 so…that “如此的…以致于”表结果。该结构常见于： 1.so+形／副＋that 2.so+形＋a(an)＋单数名词＋that 3.so＋manymuch＋复数名词（不可数名词）+that such…that“如此的…以致于”表结果。该结构常见于： 1.such＋a(an)＋形＋名词＋that 2.such＋形＋复数名词／不可数名词＋that

when-的用法

when 的用法一、when 用作副词。 1. 用作疑问副词，引导特殊疑问句。(什么时候，何时 [at what time ])例如： ①When will you come to see me? ②When are they going to visit the Great Wall? 2. 用作连接副词，通常用来引导名词性从句[主语从句、表语从句、同位语从句、宾语从句]及起名词作用的“when ＋动词不定式”结构。(什么时候，何时 [at which; on which ])例如： ①When he comes is not known. [主语从句] ②The morning is when I am busiest. [表语从句] ④I don't know when the plane takes off. [宾语从句] ⑤I don't know when to leave for London. [宾语] 3. 用作关系副词，引导限定性定语从句和非限定性定语从句。(在…的时候 [at/on/in/during which])例如： ①Do you still remember the days when we stayed in America? ②The day will come soon when the Chinese astronauts will go to the moon. ③It happened ten years ago, when I was a child. ④We will go to the countryside at the beginning of June, when the summer harvest will start. 二 . when 用作连词。 1. 用作从属连词，意为“当……的时候[at the time when ]”，引导时间状语从句。例如： ①They learned a lot from the peasants when they stayed in the village. ②It was snowing when he arrived at the station. 【点津】如果 when 引导的从句中的主语和主句中的主语一致，且从句中的谓语动词是“be ＋分词”或从句主语是 it ，则 be 动词及其主语常可省略。例如： ③When（ he was ）asked why he was late, he made no answer. ④I'll tell him about it when（ it is ）possible. 2. 用作从属连词，意为“一……就……”，引导时间状语从句。[immediately after]例如： ①We will stand up when the teacher comes into the classroom. 老师一进教室我们就起立。 ②Fire the rockets when I give the signal. 3. 用作从属连词，意为“还没 / 刚刚/刚一……就”，引导时间状语从句。[immediately after]例如： ①I had hardly opened the door when he came in. 我刚一开门，他就进来了。 ②I had not been reading for half an hour when I heard someone call my name. 【点津】hardly…when和no sooner…than的结构要注意三点：意思为“一A就B“；A句通常用完成时态；hardly 和 no sooner 位于句首时要注意部分倒装。 4. 用作从属连词，意为“倘若，如果”，表示条件。例如： ①Turn off the switch when anything goes wrong with the machine. 如果机器发生故障，就把电源关上。 ②He will be likely to recover when he is operated on. 5. 用作从属连词，意为“既然，尽管”，表示让步。例如： ①Why use metal when you can use plastic?既然能用塑料,为什么用金属? ②They kept trying when they knew it was hopeless. 尽管他们知道那件事没有希望，可是他们还在不断地努力。6. 用作并列连词，意为“在那时，届时;就在这时”，表示时间。这时主句中可以用过去进行时，过去完成时或“ was/were about to do sth. ”结构。 ①Last night I was about to go to bed when the phone rang. ②I was cooking in the kitchen when someone knocked at the door. ③He had just finished the book when supper was served. 7. 用作并列连词，意为“虽然、然而、可是”，表示转折。例如： ①He usually walks to work when he might take a bus. 虽然他可以坐公共汽车上班，但他却常常步行上班。 ②I had only twenty dollars when I needed thirty to buy the dictionary.我需要 30 美元买那本字典，可是我只有20美元。 8. 用作并列连词，意为“而、却”，表示对比。例如： How can he say that everything is fine when it's obvious that it is not? 他怎能说一切都好呢？情况显然不是那样。三 . when 用作代词[which time]。 when 作为代词常常位于介词之后，意为“那时，什么时候”。例如： ①Since when have you been studying Japanese? 【点津】since when 作引导词时是“介词（since）+关系代词（when）”的结构，when意为which time。since when常引导非限制性定语从句，从句应用完成时态。 ②I came here in 1949, since when I have been engaged in this work. 我1949年到这里，从那时起我就担任这项工作。 ③We came back on Tuesday, since when we have been working in the repair shop. ④We came a week ago, since when the weather has been bad. 四、when 还可用作名词，前面常常用定冠词 the。 the when 表示事件发生的时间,常常与 the where, the how 并列使用。 He told the police the when and the how of the accident. 他告诉警察事故发生的时间及发生的原委。［巩固练习］ 1. I remember ______ this used to be a quiet village. A. when B. how C. where D. what 2. Why do you want a new job _____ you've got such a good one already? A. that B. where C. which D. when 3. It was an exciting moment for these football fans this year, ______ for the first time in years their team won the World Cup. A. that B. while C. which D. when 4. We are living in an age _______ many things are done on computer. A. which B. that C. where D. when 5. The reporter said that the UFO ______ east to west when he saw it. A. was travelling B. travelled C. had been travelling D. was to travel 6. ______ got into the room _________ the telephone rang. A. He hardly had; then B. Hardly had he; when C. He had not; than D. Not had he; when 7. ---- Can I join your club, Dad? ---- You can when you _______ a bit older. A. get B. will got C. are getting D. will have got 8. I shall never forget those days ________ I lived in the countryside with the farmers, ________ had a great effect on my life. A. that; which B. when; which C. which; that D. when; who 9. The film brought the hours back to me ______ I was taken good care of in that faraway village. A. until B. that C. when D. where 10. He was about to tell me the secret ______ someone patted him on the shoulder.

并列连词when相关的句式归纳

并列连词when相关的句式归纳 2006年普通高等学校招生全国统一考试(辽宁卷)中有这样一道单项填空题:He was about halfway through his meal ___ a familiar voice came to his ears. A.why B.where C.when D.while 解析:答案是C。此处when作并列连词,表示“就在此刻(and just then)”“,突然(and suddenly)”,该句译为：“饭刚吃到一半儿的时候，熟悉的声音传到了他的耳朵里。” 这里when引导的并不是我们所认为的时间状语从句而是并列句。when的意思是这时而不是当什么时候。在这个句型中when所引导的从句恰恰是句意的重心，when在这里起到一个修辞的作用表示后一动作的发生的出乎意料，而前面一句是为后一句谓语动词的发生提供背景。when 为并列连词。在我们的教材中并不鲜见。如： I'd just about given myself up for lost when I was spotted by a ship. 我正感到绝望时，一艘船发现了我。【Unit 3 Book 3】 33. She had just finished her homework ___ her mother asked her to plactised playing the piano yesterday.【09福建卷】 A. when B. while C. after D. since 7. Tom was about to close the window ___ the attention was caught by a bird. 【10全国卷】 A. when B. if C. and D. till 1．be (just) about to do... when... She was just about to say something more when she noticed the sullen look on his face．她刚要再说些什么，却突然看到了他阴沉的脸色。 We were about to telephone you when your telegram arrived. 2．be (just) on the point of doing sth ... when... They were on the point of giving up when the captain encouraged them fiercely to save the ship．就在他们快要放弃努力时, 船长鼓励他们竭尽全力挽救轮船。

语法——并列句和状语从句

第12讲并列句和状语从句两个或两个以上的简单句用连在一起构成的句子叫做并列句，其基本结构是“+并列连词+简单句”。并列连词有:and, but, or, so等。状语从句是在句子中起副词作用的句子。根据状语从句在句中不同的作用可分为：时间、地点、原因、目的、结果、条件、方式、让步和比较状语从句。并列连词和从属连词是高考的重要考点之一，在语法填空中通常以无提示词的方式进行考查，在短文改错中主要考查并列连词和从属连词的误用。并列句和状语从句的考点如下：核心考点01考查并列连词并列连词是用来连接两个或多个并列的词、短语或句子的词,主要表示并列、选择、转折、因果等关系。并列连词在句子中位置比较固定,必须位于所连接的并列单位之间;两个并列连词不能并用。 1.表示并列关系的连词表示并列关系的连词有and, both...and...,not only...but also...,neither...nor...等。 2.表示选择关系的连词表示选择关系的连词有or, either...or...等。 3.表示转折关系的连词表示转折关系的连词有but, yet, while等。 4.表示因果关系的连词表示因果关系的连词有for，so。 We listened eagerly, for he brought news of our families. 作并列连词的用法

when除了作从属连词,引导时间状语从句外,还可作并列连词,其意义为“这时,那时”,相当于and at this/that time。常用于下列句式: ①sb. was doing sth. when... ②sb. was about to/going to do sth. when... ③sb. was on the point of doing sth. when... ④sb. had just done sth. when...。如: We were having a meeting when someone broke in. 我们正在开会,这时有人闯了进来。作并列连词的用法 while除了作从属连词,引导时间状语从句外,也可作并列连词,意为“而, 却”,表示对比。如: He likes pop music, while I am fond of folk music. 他喜欢流行音乐, 而我喜欢民间音乐。 I like playing the piano while my sister likes playing the violin. 我喜欢弹钢琴，而我妹妹喜欢拉小提琴。典例分析1 (2017 北京卷)—Peter, please send us postcards_________ we’ll know where you have visited. —No problem. 【解析】句意:——彼得, 请给我们邮寄明信片, 这样我们就能知道你参观过哪些地方。——没问题。根据句意可知，第一句中前后两个分句为因果关系, 所以填so。【答案】so 典例分析2 He is a shy man, _________he is not afraid of anything or anyone. 【解析】句意:他是一个腼腆的人,但是他不惧怕任何人和任何事。根据前后句意可知,这里需要一个表示转折关系的连词。【答案】but 典例分析3 You have to move out of the way_________ the truck cannot get past you.? 【解析】句意:你得让让路,不然卡车过不去。根据句子结构和句意可知,空格处应该用or,表示一个否定的条件,意为“不然的话”。【答案】or

2015年高考英语真题分类汇编：专题09 连词和状语从句 Word版含解析

专题九连词和状语从句 1.【2015·湖南】24.Video games can be a poor influence if ________ in the wrong hands. A. to leave B. leaving C. leave D. left 【答案】D 【考点定位】考查状语从句中的省略问题。【名师点睛】一般说来省略现象多出现在下列五种状语从句中:由 when ,while ,as ,before, after , till, until, once等引导的时间状语从句；由whether ,if , unless 等引导的条件状语从句；由 though , although ,even if ,whatever等引导的让步状语从句；由 as ,than 等引导的比较状语从句；由as, as if , as though 等引导的方式状语从句。上述状语从句在省略时，并非任何成分都可以省略而是遵循下面原则：（1）当状语从句的主语与主句的主语一致时且从句中含有be动词的某种形式时，可以省略状语从句的主语和系动词be 。（2）当从句的主语与主句的主语不一致，但从句主语是 it，从句中又含有系动词be 的某种形式时，可以把it和系动词be一起省略。此题的形式属于：连词(when ,if ,even if ,unless ,once ,until, than , as ) + 过去分词。完整的句子就是：Video games can be a poor influence if they are left in the wrong hands. 2.【2015·北京】25.He is a shy man,___he is not afraid of anything or anyone. A.so B. but C.or D. as 【答案】B 【解析】试题分析：句意：他是一个害羞的人，但是他并不害怕任何事和任何人。A. so因此；B. but 但是；C. or或者；D. as作为。根据句意，前后句表示转折，因此选择but。【考点定位】考查连词辨析【名师点睛】本题考查连词中在句子中的应用，做题时要分析前后句中所用的连词表示的是什么关系，看语境中前后句子的关系是转折还是并列，所以做好此类题先了解连词的意思，

连词when的用法

一、作为副词，它有以下的用法： 1. 作为疑问副词，引导特殊疑问句，意为“什么时候；何时”。（1 ）When will they come back？（2 ）What time will they come back？回答when 引导的从句，不一定指出具体的时间点。如回答句（ 1 ）可用tomorrow，next month 等。而回答what time 引导的问句，则必须说出具全的时间点，如at two o'clock，at five past ten 等。 2. 作连接副词，引导名词性从句或不定式，意为“什么时候”。从句使用陈述句语序，时态根据实际情况而定。（1 ）I'd like to know when they will come. 我想知道他们什么时候来。（when 引导宾语从句）（2 ）Can you tell me when the bank opens？你能告诉我银行什么时候开门吗？（when 引导宾语从句）（3 ）When she'll be back depends much on the weather. 她何时回来在很大程度上取决于天气。（when 引导主语从句）（4 ）Have you decided when to go sightseeing？你们已经决定什么时候去郊游了吗？（when 引导不定式结构） 3. 作疑问代词，常和介词since，till，up to 等连用，意为“什么时候”。如：（1 ）Since when have they had the house？他们从什么时候起有这幢房子的？（2 ）Till when is the library open？图书馆开放到几点呢？ 4. 作关系副词，引导限制性定语从句和非限制性定语从句。（1 ）The days are gone forever when the Chinese people were looked down upon. 中国人民被人轻视的日子一去不复返了。（2 ）The main school holidays are from mid-December till early February，when the days are long and warm. 学校的主要假期是从12 月中旬到2 月初，这段时间里白天长而且很温暖。（3 ）Considering （the time）when these paintings were done，they are in excellent condition. 考虑到这些油画的创作时期，它们保存的状况是极好的。（4 ）Do you remember （the time）when the three of us went on a picnic？你还记得我们三个人去野餐的那段时光吗？ A. 在定语从句中，that 在某些条件下可用来代替when ，这时其先行词通常是time，

语法并列句和状语从句

第12讲并列句和状语从句两个或两个以上的简单句用并列连词连在一起构成的句子叫做并列句，其基本结构是“简单句+并列连词+简单句”。并列连词有:and, but, or, so等。状语从句是在句子中起副词作用的句子。根据状语从句在句中不同的作用可分为：时间、地点、原因、目的、结果、条件、方式、让步和比较状语从句。并列连词和从属连词是高考的重要考点之一，在语法填空中通常以无提示词的方式进行考查，在短文改错中主要考查并列连词和从属连词的误用。并列句和状语从句的考点如下：核心考点01 考查并列连词并列连词是用来连接两个或多个并列的词、短语或句子的词,主要表示并列、选择、转折、因果等关系。并列连词在句子中位置比较固定,必须位于所连接的并列单位之间;两个并列连词不能并用。 1.表示并列关系的连词表示并列关系的连词有and, both...and...,not only...but also...,neither...nor...等。 2.表示选择关系的连词表示选择关系的连词有or, either...or...等。 3.表示转折关系的连词表示转折关系的连词有but, yet, while等。 4.表示因果关系的连词

表示因果关系的连词有for，so。 We listened eagerly, for he brought news of our families. 5.when作并列连词的用法 when除了作从属连词,引导时间状语从句外,还可作并列连词,其意义为“这时,那时”,相当于and at this/that time。常用于下列句式: ①sb. was doing sth. when... ②sb. was about to/going to do sth. when... ③sb. was on the point of doing sth. when... ④sb. had just done sth. when...。如: We were having a meeting when someone broke in. 我们正在开会,这时有人闯了进来。 6.while作并列连词的用法 while除了作从属连词,引导时间状语从句外,也可作并列连词,意为“而, 却”,表示对比。如: He likes pop music, while I am fond of folk music. 他喜欢流行音乐, 而我喜欢民间音乐。 I like playing the piano while my sister likes playing the violin.

介词连词与状语从句

【专题四】介词、连词与状语从句【考情分析】介词 1．常见介词地用法及辨析. 2．介词与其他词性所构成地一些短语. 3．在定语从句中,介词地使用情况. 连词 1. 考查并列连词、从属连词地用法 2. 重点考查主从复合句和并列句地连接词地选用. 。状语从句 1.状语从句地分类 1.可分为时间、原因、地点、目地、结果、条件、让步、比较及方式等类型. 2.状语从句地引导词与介词地用法比较；状语从句与定语从句引导词地辨析. 3.能够辨别同类状语从句中近似连接词地用法差异. 【知识归纳】介词： 1.“名词＋介词”型 the key/answer/visit/apology/introduction/way…to； wish/desire/prize/respect…for； ; pity/mercy/congratulation/effect/advice/impression/influence…on 2.“介词＋名词”型 (1) in ＋名词 in advance 在前头,事先,预先in case 如果,万一in charge 主管,掌管,看管 in common 共有,共同,公有in demand 有需要地in doubt 感到疑惑地,难以确定地 (2) ①on＋名词 on guard 在值勤on leave 在休假on holiday在度假on strike罢工on sale出售on loan 借贷 ②on＋the＋名词on the move 在移动,搬迁；离开on the march 在行军on the flow 在涨潮 (3) beyond ＋名词 beyond one's power 是某人力所不及地beyond one's reach 够不着 ~

并列句及连词的用法(巩固练习)

连词的用法责编：王晓丽【巩固练习】 I. 用and, but, or或so填空。 1. Hurry up, _________ you’ll be late for school. 2. Who’s the youngest, Rose, Helen ________ Betty? 3. Work hard, ______ you will succeed. 4. I’ll see you either on Monday _______ on Tuesday. 5. Put your coat on, ______ you’ll be cold. 6. His bike is broken，_____ he has to walk there. 7. The old man has no money, ______he can’t buy food to eat. 8. The sky is blue ________ everything is beautiful. 9. We were very tired _______ we were very happy. 10. He never smokes ________ drinks. 11. There is no air ______ water on the moon. 12. Your classroom is clean _______ tidy. 13. My house is small _______ lovely. 14. It is hot today, ______ some boys are still playing basketball outside. 15. People can’t live without air _____ water. 16. The Summer Palace is large _______ beautiful. 17. He looks tall and strong ______ he is afraid to go out at night. 18. We had no water ______ food at that time. 19. Come on! _______ you will win the match. 20. Wang Tao's pen was broken, ______ he needed a new one. II.单项选择。 1．The boy is only ten，_______ he can do some washing himself． A．though B．but C．or D．so 2. Work hard, _____ you'll pass the English exam this time. A. or B. but C. because D. and 3. There are no buses, ____ you’ll have to walk. A. so B. or C. but D. for 4. Mr. Smith is an English teacher ______ he teaches us English. A. or B. and C. but D. so 5. — Would you like to go to the concert with me tonight? —I’d love to, ______ I can’t. I have a lot of homework to do. A. or B. and C. but D. so 6. When you are learning English, use it as often as possible, ______ you might drop it. A. or B. and C. but D. so 7. —You watched the fashion show last night, didn’t you? — Yes, ______ I missed the beginning. A. or B. and C. but D. so