when的用法总结大全

when的用法总结大全
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。

when用作连词的用法例句

And they roared when Seaman held up two fingers.然后当希曼伸出两根指头的时候他们就吼叫起来。

I stayed till noon, when I went home.我留到中午,然后就回家了。

When all is said and done,we still must eat.可是说到底,我们还得吃饭。

when用法例句

1、The best thing to do when entering unknown territory is smile.

踏入未知地带最好的对策就是微笑。

2、When life gets hard and you want to give up, remember that life is full of ups and downs, and without the downs, the ups would mean nothing.

当生活很艰难,你想要放弃的时候,请记住,生活充满了起起落落,如果没有低谷,那站在高处也失去了意义。

3、Good luck is when an opportunity comes along and youre prepared for it.

好运就是当机会来临时,你早已做好了准备。

单词小结| When 用法汇总

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”。如:

(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 oclock,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。如:

(1)Id 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 shell 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。如:

(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?

二、作为从属连词,引导状语从句,表示多种语法意义

1. 表示时间,意为“当……时;在……的时候”。

A. 在时间、条件等状语从句里,用一般现在时表示将来时;当需要表达将来完成的意义时,必须使用现在完成时来代替。如:

(1)When you see him,please say hello to him. 见到他时,代我问他好。

(2)When you have finished your experiment,please tidy the lab and put everything back in the cupboards. 当你们做完实验后,请把实验室整理好并把物品放回柜子中。

B. 表示过去发生的事情,在when引导的时间状语从句的主从复合句中,动作发生在先的用过去完成时,在后的用过去时。如:

(1)When I was in Japan,I bought some beautiful pearls. 我在日本时,买了一些漂亮的珍珠。

(2)When I reached the station,the train had left. 当我到达火车站时,火车已经开走了。

2. 表示前面的叙述所没有提到过的信息。它总是对所描述的事件予以引人注目的强调,意为“这时;突然”;当位于句末的分句具有引种用法时,大致有以下三种情况:

A. when 分句前面的分句使用过去进行时。如:

(1)He was still smiling when the door opened and his wife came in. 他正笑着的时候,门突然开了,他妻子走了进来。

(2)I was thinking of this when I heard my name called. 我正想着这件事时,突然听到有人叫我的名字。

B. when 分句前面的分句使用was (were) about to,was (were) on the point 等。如:(1)We were about to start when it began to rain. 我们刚要出发就开始下雨了。

(2)He was on the point of leaving when someone knocked at the door. 他刚要走就有人敲门。

C. when 分句之前的分句用过去完成时,其中sb had hardly / scarcely /barely … when 已成为固定词组。如:

(1)We had hardly fallen asleep when the bell rang. 我们刚刚入睡,铃声就响了起来。

(2)He had scarcely arrived when he had to leave again. 他刚

刚到达就又要离开了。

3. 表示条件,相当于if ,引导条件状语从句。如:

How can I get a job when I cant even read or write? 如果我连读和写都不会,我怎么能找到工作呢?

4. 表示对比,主要有以下两种情况:

A. 相当于whereas,while,since,意为“既然;然而”。如:

How can I help them to understand when they wont listen to me? 既然他们不愿听我的,我又怎么能帮助他们弄明白呢?

B. when 从句中使用虚拟语气,意为“本来……却……”。如:

She paid when she could have entered free. 本来可以免费入场,而她却付了款。

5. 由when 等引导的状语从句,如果主语与主句的主语一致或是it ,谓语动词又含be 动词时,主语和be 动词常常被省略,就变成“ when + V-ing/ V-ed/ adj/ 介词词组”的结构。如:

(1)When in Rome,do as Romans do. 入乡随俗。

(2)When(we are)young,we are full of hope. 年轻时,我们大家总是充满希望。

(3)Dont reach sideways when standing on a ladder. 站在梯子上时,

英语中when和while的用法区详细讲解

1.1时间连词when的用法特点

一般来讲,when的意思相当于at that time(在……时刻),因此从句的谓语动词通常是短暂动词,表示某一时刻的动作。不过,when引导的从句也可接延续动词(continuous verb),这时从句往往用过去进行时态,表示某一时间段内发生的动作。有关连词when常见的主从句时态搭配举例说明如下。

时间从句所表达的时间通常是过去和将来。首先,来看when 引导从句表示过去动作的四组时态搭配。

一、主句一般过去时+从句一般过去时

1I started my dinner when he left. 他走了之后,我才开始吃晚饭。

2He left when I got there. 我到了以后,他才离开。

从以上例句可以看出,若主从句都用一般过去时,则表示从句动作先发生。所以,从句还可以用过去完成时。于是,就有了下面的第二种时态搭配关系。

二、主句一般过去时+从句过去完成时

3I started my dinner when he had left.

中考英语口语辅导:consider的用法

中考英语口语辅导:consider的用法 表示“考虑”,其后可接动名词,但不能接不定式。如He is considering changing his job. 他在考虑调换工作。I’ve never really considered getting married. 我从未考虑过结婚的事。注:consider 之后虽然不能直接跟不定式,但可跟“疑问词+不定式”结构。如Have you considered how to get there / how you could get there. 你是否考虑过何到那儿去?2. 表示“认为”、“把……看作”,下面三个句型值得注意(有时三者可互换) (1) consider +that从句(2) consider+宾语+(as +)名词或形容词(3) consider+宾语+(to be +)名词或形容词I consider him (as) honest (或an honest man). I consider him (to be) honest (或an honest man). I consider that he is honest (或an honest man). 注:(1) 以上备句意思大致相同,对于consider 之后能否接as 的问题,尚有不同看法(即有人认为不能接as ,有人认为可以拉as,但实际上接as 的用法已很普遍)。(2) 在“consider+宾语”之后除可接to be 外,有时也可to do 型动词(但多为完成形式)。如We all considered him to have acted disgracefully. 我们都认为他的行为很不光彩。

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。

初中英语情态动词详细用法归纳(含练习及答案)

初中英语情态动词详细用法归纳(含练习及答案) 1. can 的用法: (1).表示能力、许可、可能性。表示能力时一般译为“能、会”,即有种能力,尤其是生来具备的能力.如:She can swim fast, but I can’t . 她能游得很快,但我不能。 I can see with my eyes. 我用眼睛看。could是can的过去式。表示过去的能力。 be able to do sth. 常常指经过努力,花费了时间和劳力之后才能做到某事。is/am/are able to do sth was/were able to do sth. (2).表示许可,常在口语中。如:You can use my dictionary. 你可以用我的字典。 (3).表示推测,可能性,意为“可能”,常用于否定句和疑问句中,此时can’t 译为“ 不可能”。如:Can the news be true? 这个消息会是真的吗?—Can it be our teacher?那个人有可能是我们老师吗?—No, it can’t be our teacher. He is on a visit to the Great Wall.不可能。咱们老师正在游览长城呢。 【例题】—I think Miss Gao must be in the library. She said she would go there. —No. She __be there, I have just been there. A.can’t B.mustn’t C.needn’t D.wouldn’t 【解析】根据下文“我刚去过那儿”可知,应为“ 不可能”,can’t 表示推测[答案] A could的用法: (1).can的过去式,意为“ 能、会”,表示过去的能力。如:He could write poems when he was 10. 他十岁时就会写诗。 (2). could在疑问句中,表示委婉的语气,此时could 没有过去式的意思。如:Could you give me a hand? 你能帮我个忙吗?—Could I use your pen? 我能用一下你的钢笔吗? —Yes, you can.可以。(用could问,不能用could答。) 2. may的用法: (1).表示请求、许可,比can 正式,如:May I borrow your bike? 我可以借你的自行车吗?You may go home now. 现在你可以回家了。 【例题】—_______ I borrow your MP3? —Sure . Here you are. A. May B.Should C.Must D. Would 【解析】在此处表示请求,意为“ 做……可以吗”。答案:A (2) .表示推测,谈论可能性,意为“ 可能,或许”,一般用于肯定句中。如:It may rain tomorrow . 明天可能会下雨。She may be at home. 她可能在家呢. may not 翻译为“可能不” (3) .may的过去式为might ,表示推测时。可能性低于may。如:He is away from school. He might be sick. 他离开学校了,可能是他生病了。 (4) . 表示希望、祈求、祝愿,常可译为“祝愿”。通常是用may +主+V 例如:May you have a good time. 祝你过得愉快。May you be happy! 祝你幸福!May you succeed!祝你成功! 3. must的用法: (1).must 表示主观看法,意为“必须、一定”。如:You must stay here until I come back.在我回来之前你必须呆在这儿。Must I finish my homework right now? 我必须现在交作业吗?(must引导的疑问句) 肯定回答:yes ,you must. 否定回答:No, you needn’t/ don’t have to (2) 其否定形式mustn’t表示“ 一定不要” “千万别” “禁止, 不许”. 如:You mustn’t play with fire. 你不许玩火。You mustn’t be late. 你一定不要迟到。 (3)must表示有把握的推测,用于肯定句,指百分百肯定。如: The light is on, so he must be at home now.灯亮着,他现在肯定在家。 (4)①must 和have to 都有”必须”的含义,但侧重点不同: must强调说话者主观(自己)的看法。 have to强调客观(外力作用)的需要,也可以翻译为“不得不”。

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.

consider的基本用法及与regardthinkofabout

consider的基本用法及与regard,think ofabout和look(up)on as的区别 consider的基本用法及与regard,think of/about和look(up)on as的区别 consider一词在历年高考中是一个常考的要点,其用法应分为两部分来讲。第一、作“考虑、思考”时的搭配如下: 1.consider+n./pron.,例如: Have you considered the suggestion? That’s what we have to consider now. 2.consider+v-ing,但不能接不定式的一般式,例如: We considered going to see the doctor the next day. Have you considered moving to shanghai recently? You must consider to tell him something about it.(错误) 3.consider+疑问词+不定式,例如: He is considering how to improve his English. We must consider what to do next.

4.consider+从句,例如: We didn’t consider whether he should go or not. Have you considered when we should go there? 第二、作“认为、把……当作/看作”等意思时的搭配如下:1.consider+sb/sth+(to be/as)+n./adj.,例如: I consider him to(be/as)my best friend. Everyone considers him(to be)clever. He considered it much improved. 2.consider+sb./sth.+不定式短语(作宾语补足语),不能接不定式的一般式,例如: We consider them to be working very hard. We consider them to have finished the work. We consider him to be the clever in our class. We must consider him to go there at once.(错误) 3.consider+it+adj./n.+不定式短语,其中it为形式宾语,不定式短语为真正的宾语,例如: Jiao Yulu considered it his duty to serve the people heart and soul. They consider it necessary to set the slaves free.

初中英语情态动词详细用法归纳(含练习及答案)(直接打印版)

初中英语情态动词详细用法归纳(含练习及答案)(直接打印版) 情态动词有具体的词义,但也同助动词一样,需要与其他词语一起构成句子的谓语,另外情态动词没有人称和数的变化,情态动词后必须跟动词原形。 1. can 的用法: (1).表示能力、许可、可能性。表示能力时一般译为―能、会‖,即有种能力,尤其是生来具备的能力,此时may 和must 均不可代替它。如:She can swim fast, but I can’t . 她能游得很快,但我不能。I can see with my eyes. 我用眼睛看。 (2).表示许可,常在口语中。如:You can use my dictionary. 你可以用我的字典。 (3).表示推测,意为―可能‖,常用于否定句和疑问句中,此时can’t 译为― 不可能‖。如:Can the news be true? 这个消息会是真的吗?—Can it be our teacher?那个人有可能是我们老师吗?—No, it can’t be our teacher. He is on a visit to the Great Wall.不可能。咱们老师正在游览长城呢。 【例题】—I think Miss Gao must be in the library. She said she would go there. —No. She __be there, I have just been there. A.can’t B.mustn’t C.needn’t D.wouldn’t 【解析】根据下文―我刚去过那儿‖可知,应为― 不可能‖,can’t 表示推测[答案] A 2. could的用法: (1).can的过去式,意为― 能、会‖,表示过去的能力。如:He could write poems when he was 10. 他十岁时就会写诗。 (2). could在疑问句中,表示委婉的语气,此时could 没有过去式的意思。如:Could you do me a favour? 你能帮我个忙吗?—Could I use your pen? 我能用一下你的钢笔吗? —Yes, you can.可以。(注意回答) 3. may的用法: (1).表示请求、许可,比can 正式,如:May I borrow your bike? 我可以借你的自行车吗?You may go home now. 现在你可以回家了。 【例题】—_______ I borrow your MP3? —Sure . Here you are. A. May B.Should C.Must D. Would 【解析】在此处表示请求,意为― 做……可以吗‖。答案:A (2) .表示推测,谈论可能性,意为― 可能,或许‖,一般用于肯定句中。如:It may rain tomorrow . 明天可能会下雨。She may be at home. 她可能在家呢. (3) .may的过去式为might ,表示推测时。可能性低于may。如:He is away from school. He might be sick. 他离开学校了,可能是他生病了。 (4) . 表示希望、祈求、祝愿,常可译为“祝愿”。通常是用may +主+V 例如:May you have a good time. 祝你过得愉快。May you be happy! 祝你幸福!May you succeed!祝你成功! 4. must的用法: (1).must 表示主观看法,意为―必须、一定‖。如:You must stay here until I come back.在我回来之前你必须呆在这儿。Must I hand in my homework right now? 我必须现在交作业吗? (2) 其否定形式mustn’t表示― 一定不要‖ ―千万别‖ ―禁止, 不许‖. 如:You mustn’t play with fire. 你不许玩火。You mustn’t be late. 你一定不要迟到。 (3)对must引导的疑问句,肯定回答为must,否定回答为needn’t 或don’t have to .如:—Must I finish my homework?我现在必须完成作业吗?—No, you needn’t.不,你不必。 (4)must表示有把握的推测,用于肯定句。如: The light is on, so he must be at home now.灯亮着,他现在肯定在家。 注意其反意问句的构成形式: 当must表示肯定的判断、推测时,其反意疑问句要用实际问句的助动词来构成。如:She must have seen the film before,hasn’t she?(注意反意疑问句的后半部分)You must have met uncle Wang in the shop yesterday,didn’t you? (注意反意疑问句的后半部分)

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.

Consider的用法

Consider的用法: -Have you considered_____ the job ss a teacher? -Yes.I like it because a teacher is often considered _______ a gardener. A.to take,to be B.to take,being C.taking,being D.taking,to be 答案:d译文:你考虑过做老师的工作吗? 是的,我非常喜欢,因为老师通常被认为是园丁 一、consider作“考虑”解,常用于以下句型: 1.consider+名词/代词/动名词。 You'd better consider my suggestion. 你最好考虑我的建议。 I’m considering going abroad some day.我一直考虑有一天出国。 2.consider+从句或“疑问词+不定式”。 Have you considered what he suggested? 你们考虑他的建议了吗? We must consider what to do next. 我们必须考虑下一步要做什么。 二.consider作“认为”解时,常用于以下句型: 1.consider sb./sth+.(as)+形容词/名词。其中,as可以省略。 We consider him honest. 我们认为他很诚实。 At first they considered me as a doctor.起初他们认为我是医生。 2.consider+sb./sth.+不定式。其中,不定式通常是to be(可以省略)或其他动词的完成式。We consider this matter to be very important. 我们认为这件事很重要。 We all consider him to have stolen the bike.我们都认为他偷了自行车。 3.consider+it+形容词/名词+不定式短语。 We consider it hard to study English well.我们认为学好英语很难。 I consider it my duty to help you with your studies.我认为帮助你学习英语是我的职责。 4.consider+宾语从句。 We consider that the music is well worth listening to.我们这首音乐很值得一听。 在该题中,前一个句子中的consider作“考虑”解,后接动名词作宾语,但不可接不定式,由此可以排除A, B; 后一个句子中的consider作“认为”解,用到句型consider+sb./sth.+不定式,此处使用的是被动语态结构。故答案为D项。 请看下面两道考题,均考查“with+宾语+非谓语动词”结构: 1.—Come on, please give me some ideas about the project. —Sorry. With so much work _________my mind, I almost break down. A.filled B.filling C.to fill D.being filled 2.John received an invitation to dinner, and with his work _________, he gladly acc epted it. A.finished B.finishing C.having finished D.was finished 以上两题答案分别为B和A,均考查“with+宾语+非谓语动词”结构。该结果中的“非谓语动词”可以是不定式、现在分词、过去分词,它们在用法上的区别如下:

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。

consider的用法归纳有哪些

consider的用法归纳有哪些 consider的用法:作名词 consideration作名词,意为careful thought and attention斟酌,考虑 Several considerations have influenced my decision.好几个因素影响了我的决定。 1.Consideration for顾及,体贴 He has never shown much consideration for his wife’s needs.他从来不顾及他妻 子的需要。 2.Under consideration在讨论/考虑中 Several projects are under consideration.好几个项目在讨论中。 There are some proposals under consideration. 有几个建议在审议中。 3.Take sth. into consideration考虑到某事,体谅 Your teachers will take your recent illness into consideration when marking your exams. 你的几位老师在给你的考试评分时,会考虑你最近生病这一情况的。 4.Leave sth. out of consideration 忽略/不重视某事 It was wrong to leave my feelings out of consideration.不顾及我的情感是不对的。 5.Show consideration for体谅,顾及 Jeff never shows any consideration for his mother’s feelings.杰夫从来不体谅他 母亲的感受。 6.of. No / little consideration无关紧要的,不重要的 Whether he would go with us or not was of no consideration. 他是否跟我们一起 去是无关紧要的。 7.In consideration of sth.作为对……的汇报,考虑到 It’s a small payment in consideration of your services.这是答谢您服务的微薄酬金。 consider的用法:作动词 1.Consider作动词,意为think about sth.考虑,斟酌 常用搭配:consider sth. / doing sth. / where(how, why)+to do /that clause; all things considered通盘考虑,考虑到问题的各个方面。如:

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,

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