hen和while都是“当,过去完成时..,而when可以通用(如过去时,但是while一般用于现在时.时”的意思,一般将来时等)
while和when的区别 while和when的区别举例
while和when的区别 while和when的区别举例
"when" 和 "while" 都可以用来描述某个或行动发生的时间或时间段。
I was studying when he called me. (他给我打电话时,我正在学习。)
"While" 则用于描述会持续较长时间的时间段,强调两个或多个行动或之间的同时性或持续性。例如:
I was studying while she was cooking dinner. (她在做晚饭Things are getting better and better as time goes on. 随着时间的推移,情况越来越好。的时候,我正在学习。"While" 和 "When" 都是英语中常用的连词,但它们的用法有所不同。)
He likes to listen to music while he's working. (他喜欢在工作的时候听音乐。)
在过去进行时中,"when" 和 "while" 的区别在于"when" 强调过去某一个具体的瞬间或时间,而 "while" 强调状态或持续的动作。例如:
I was cooking when the phone rang.(电话响了时我正在做饭。)
I was cleaning the house while my mother was watching TV.(我妈妈在看电视的时候我正在打扫房间。)
需要注意的是,"when" 和 "while" 在使用过程中,需要根据上下文的不同,语境的不同,灵活运用,选择正确的词语来表达对应的句子含义。
1、用作疑问副词,特殊疑问句。
while 的用法例句:When will you come to see me?
你什么时候要来看我?
2、用作连接副词,通常用来主语从句、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。
例句:When he comes is not known.
二、while用法
1、while意为“当……时候”,指一段时间,不能用来表示一个时间点。
例句:While discussion was still going on,George came in.
当讨论还在进行时,乔治走了进来。
2、while意为“而;然而”,表示转折。
例句:There're plenty of rain in the southeast,whilere's little in the northeast.
词语辨析:
when, aThey worked until it was dark .他们一直工作凌晨一点.s, while的区别:
when 从句动词点动词,持续性动词均可。
as 重在表示动作同时发生,伴随进行。
while 从句动词为持续性动词,例如:While I slept, a thief broke in.
1 连词 时间状语从句,意为 当.时候 while 的句子的谓语部分必须是可以延续的动词或结构.
My mother is cooking while my father is reading the news .
She fell asleep while she was doing her homework .
2 名词 意为 一会儿 after a while for a while
After a while,she came back .
w例如:While I was wondering what to order for lunch today, Penny suggested pizza.(当我还在苦思冥想中午吃什么的时候,Penny提议吃披萨。)hen的用法
when 连词 意为 当...时候 ...这时.时间状语从句,与while 不同,when 的句子的谓语部分可以是短暂性的也可以是持续性的动词或结构.
She fell asleep when she was doing her homework .
I was walking in the street when I saw a wallet on the ground .
I saw her singing in the room when I passed by her room .
until 的用法
1 until是连词 时间状语从句
两个句型:.(肯定句)until....否定句)until .
2 介词 They kept him waiting until o'clock in the afternooeg:As she got older,she become nr.n .
when和while的时间状语从句与这一时态连用。所以区别when和while的用法成了这一单元的难点。 (一)、when,while都有“当……时候”的意思。when既可表示某一点时间,也可以表示某一段时间 。在when的时间状语从句中,其谓语动词可以是延续性的,也可以是非延续性的,可与主句中的谓语动词同时发生,也可在其后发生。 例如: 1、I was just reading a book when she came into my room. 她走进我房间b. They were singing while we were dancing.时,我正在看书。 2、Were you writing when the teacher came in? 老师进来的时候,你在写信吗? 3、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。 (二)、while只能表示某一段时间,不能表示某一点时间。在while的时间状语从句中,其谓语动词只能是延续性的,而且也只能与主句中的谓语动词同时发生或存在。 例如: 1、While Jim was mending his bike, Lin Tao came to see him. 正当吉姆修自行车时,林涛来看他。 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。 (三)、另外,when和while的区别还在于:while的时间状语从句多用进行时态,而when的时间状语从句多用一般时态。 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、I was doing my homework when my mother came back home yesterday ning. 昨天晚上妈妈回家的时候,我正在做家庭作
when和while的时间状语从句与这一时态连用。所以区别when和while的用法成了这一单元的难点。 (一)、when,while都有“当……时候”的意思。when既可表示某一点时间,也可以表示某一段时间 。在when的时间状语从句中,其谓语动词可以是延续性的,也可以是非延续性的,可与主句中的谓语动词同时发生,也可在其后发生。 例如: 1、I was just reading a book when she came into my room. 她走进我房间时,我正在看书。 2、Were you writing when the teacher came in? 老师进来的时候,你在写信吗? 3、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。 (二)、while只能表示某一段时间,不能表示某一点时间。在while的时间状语从句中,其谓语动词只能是延续性的,而且也只能与主句中的谓语动词同时发生或存在。 例如: 1、While Jim was mending his bike, Lin Tao came to see him. 正当吉姆修自行车时,林涛来看他。 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。 (三)、另外,when和while的区别还在于:while的时间状语从句多用进行时态,而when的时间状语从句多用一般时态。 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、I was doing my homework when my mother came back home yesterday ning. 昨天晚上妈妈回家的时候,我正在做家庭作业Somepeoplewastefoodwhileothershen'tenough.
as 用于引出一个持续性动词表示“在……期间”时,其谓语通常只能是那些含有动作(action)和发展(dlopment) 意味的动词,一般不能是那些不用于进行时态的动词(如 be, seem, love, want, agree, see, know, he 等),有些人很费粮食,然而有些人却吃不饱。
二、while的用法:作连词,时间状语。
Whileshewaslisteningtotheradio,shefellasleep.
她听着收音机睡着了。
三、while的用法:作名词用,表示“一会儿”“一段时间”。
Shelikestoliedownforawhileafterlunch.
扩展资料:
while与when以及as之间的区别。
1、当从句中的谓语动词是持续性的动作时,我们可以用while, when或as。
2、当从句中的谓语动1.When he came in, she went out.词表示瞬间动作时,不可用while。
3、如果谈论两个长动作,常用的是while。
4、如果表示两个短动作或同时发生,常用的是as或just as,也可用when。
"While" 的用法:
- "While" 也可以表示一个动作的持续时间。例如:"I read a book while waiting for my friend at the coffee shop."(我在咖啡店等我的朋友时读了一本书。)
- "While" 还可以表示对比或相反。例如:"While I love cream, my sister hates it."(虽然我喜欢冰淇淋,但我妹妹不喜欢。)
"When" 的用法:
- "When" 也可以表示一个的条件。例如:"I will go to the beach when it stops raining."(当雨停下来时,我会去海滩。)
- "When" 还可以表示一个动作的频率。例如:"I get a headache when I drink too much coffee."(我喝太多咖啡时会头痛。)
when和while的区别 ①when是at or during the time that, 既指时间点,也可指一段时间; while是during the time that,只指一段时间,因此when的时间状语从句中的动词可以是终止性动词,也可以是延续性动词,而while从句中的动词必须是延续性动词。 ②when 说明从句的动作和主句的动作可以是同时,也可以是先后发生;while 则强调主句的动作在从句动作的发生的过程中或主从句两个动作同时发生。 ③由when的时间状语从句,主句用过去进行时,从句应用一般过去时;如果从句和主句的动作同时发生,两句都用过去进行时的时候,多用while,如: a. When the teacher came in, we were talking. 当此句改变主从句的位置时,则为: While we were talking, the teacher came in. b. They were singing while we were dancing. ④when和while 还可作并列连词。when表示“在那时”;while表示“而,却”,表对照关系。如: a. The children were running to move the bag of r when they heard the sound of a motor bike. 孩子们正要跑过去搬开那袋米,这时他们听到了摩托车的声音。 b. He is strong while his brother is weak. 他长得很结实,而他弟弟却很瘦弱。 具体你可以参考这一段。 when,while,as时间状语从句的区别 when,while,as显然都可以时间状语从句,但用法区别非常大。 一、when可以和延续性动词连用,也可以和短暂性动词连用;而while和as只能和延续性动词连用。 ① Why do you want a new job when youve got such a good one already?(get为短暂性动词)你已经找到如此好的工作,为何还想再找新的? ②Sorry,I was out when you called me.(call为短暂性动词)对不起,你打电话时我刚好外出了。 ③Strike while the iron is hot.(is为延续性动词,表示一种持续的状态)趁热打铁。 ④ The students took notes as they listened.(listen为延续性动词)学生们边听课边做笔记。
When I saw her, she was crying. (我看到她时,她正在哭泣。)while的时间状语从句多用进行时态,而when的用一般时态即可。
例如:用while时可以说:While I was seeking a parking lot, the pol came over and asked me to show my driving lnse.(当我在找停车场的时候,警察走过来让我出示驾照。) 用when则要说:When I turned my head, I saw a pol coming over.(当我回头的时候,我看到警察朝我走过来。)
wh此句中的when从句的动作表示的是一段时间,可以用用as代替。ile只能表达“during certain amount of time”(在某段时间内),不能表达某一时间点。而when则既可以表达一个时间点,又可以表达一段时间。所以,跟在while后面的动词必须要是个延续性动词,不能是类似:put on、sit down这样瞬间就结束的动词。
例句:
1、I asked him when he'd be back to pick me up.
我问他什么时候回来接我。
2、He could remember a time when he had worked like that himself.
他还能记得自己一度工作起来也是那个样子。
3、How can I love myself when I look like this?
我这个样子,怎么能对自己满意呢?
while
1、They walked on in silence for a while.
他们继续默默无语地走了一会儿。
2、All the while the people at the next table watched me eat.
3、I sat on the settee to unwrap the package while he stood by.
我坐在长椅上打开包裹时他就站在旁边。
as和when均可用作从属连词,时间状语从句,作“当……时候”解。它们所的时间状语从句有时意思一样,有时却有异。意思相同时,可以互换使用;意思不同时,则不能互换。
- "When" 表示一个动作发生的时间。例如:"I always he a cup of coffee when I wake up in the morning."(我每天早上醒来时都会喝一杯咖啡。)as的意思是“正当……时候(just as,at the same moment that)”“随着……(while,when)”,它既可表示一个具体的时间点,也可以表示一段时间。as可表示主句和从句的动作同时发生或同时持续,即“点点重合”“线线重合”;又可表示一个动作发生在另一个动作的持续过程中,即“点线重合”,但不能表示两个动作一前一后发生。如果主句和从句的谓语动词都表示持续性的动作,二者均可用进行时,也可以一个用进行时,一个用一般时或者都用一般时。例如:
1. As I got on the bus, he got off.
我上车,他下车。(点点重合)
2. He was writing as I was reading.
我看书时,他在写字。(线线重合)
3. The students were talking as the teacher came in.
老师进来时,学生们正在讲话。(点线重合)
when的意思是“当……时候(at the time that)”“无论什么时候(whenr)” “一……就……(as soon as )” “在……以后(after)”。它表示的时间概念比较广泛,上述例句中的as或while均可用when代替,因为when不但可以表示具体的时间点,而且也可以表示一段时间。在时间上它既能表示“点点重合”“线线重合”,又能表示“点线重合”。例如:
他进来,她出去。(点点重合)
此句中when从句的动作表示的是一个时间点,when可以用as代替,但不能用while代替。
2. When he came back, I was doing some washing.
他回来时,我在洗衣服。(点线重合)
此句中when从句的动作表示的是一个时间点,所以只能用as代替,不能用while代替。
3. When Mary was writing a letter, the children were playing outside.
希望- "While" 表示两个动作同时发生。例如:"While I was cooking dinner, my huand was setting the table."(当我在做晚饭时,我丈夫正在摆桌子。)对你有帮助~
若主从句表示的两个同时进行的动作含有“一边…一边”之意思,通常用 as:
She sang as she went along. 她边走边唱。
若从句是一个短暂性动作,主句是一个持续性动作,可用 as / when 但不用 while:
It was raining hard when [as] we arrived. 我们到达时正下着大雨。
若主从句表示的是两个同时(或几乎同时)发生的短暂性动作,用 as / when:
I thought of it just when [as] you opened your mouth. 就在你要说的时候,我也想到了。
若要表示两个正在发展变化的情况,相当于汉语的“随着”,一般用 as:
As it grew darker, it became colder. 天色越晚,天气越冷。
表示“每当…的时候”(暗示一种规律性),一般要用 when:
He iles when you praise him. 你夸奖他时他总是笑笑。
若主从句所表示的动作不是同时发生,而是有先后顺序时,一般要用 when:
I will go home when he comes back. 他回来时,我就回家去。
when 可用作并列连词,表示“这时(突然)”;while 也可以用作并列连词,表示“而”、“却”(表示对比);但 as 则没有类似用法:
We were about to start when it began to rain. 我们正要出发,这时天开始下雨了。
He likes coffee, while she likes tea. 他喜欢咖啡,而她却喜欢茶。
as 和 when 后均可直接跟一个名词,构成省略句,但 while 一般不这样用:
As [When] a boy, he lived in Japan. 他小时候在日本。
when 和 while 后可接现在分词、介词短语、形容词等构成省略句,但 as 一般不这样用:
When [While] reading, he fell asleep. 他看书时睡着了。
when,as,时间状语从句时,侧重点有所不同:
1.when可指时间点,又可指时间段,从句中可用延续性动词,也可用非延续性动词.
2.as多用于平行结构,表示两个动作同时发生:一个主语同时进行两个动作;一种状态随另一种状态的变化而变化.
3.表示主句的动作发生在从句的较长动作过程中,when,as均可使用.从句中为be动词时,多用when.谈论两个平行动作或两种状态变化多用as.
在时间状语从句中when强调时间点as解释为随着,强调时间推移.
He pretended to be reading when his mother came in.
when也可解释为每当:When it rains,the children always play indoors.
as的从句和主句多了些逻辑关系,从句描述的动作和主句同步发展,when时间状表示某一个时间点,因此as多译为“随着”,when译为“在··的时候”,when放在句中还有译为“突然”的意思。
在时间状语从句中when强调时间点as解释为随着,强调时间推移.
He pretended to be reading when his mother came in.
when也可解释为每当:When it rains,the children always play indoors.
由when的时间状语从句,主句用过去进行时,从句应用一般过去时;如果从句和主句的动作同时发生,两句都用过去进行时的时候,多用while。
when和whileWhen [While] in trouble, ask her for . 遇到麻烦的时候你就去找她帮忙。的.区别:
要看从句和主句中所使用的动词是短暂性动作(瞬时动词)还是持续性动作。
1、若主句表示的是一个短暂性的动作,而从句表示的是一个持续性动作时,两者都可用。如:
He fell asleep when [while] he was reading. 他看书时睡着了。
I met him when [while] I was taking a walk in the park. 我在公园散步时遇到了他。
2、若主、从句表示两个同时进行的持续性动作,且强调主句表示的动作延续到从句所指的整个时间,通常要用 while。如:
I kept silent while he was writing. 在他写的时候,我默不作声。
When he came in, I wa例子:s listening to the radio. 他进来时,我在听收音机。
It was raining hard when we arrived. 我们到达时正下着大雨。
4、若主、从句表示的是两个同时(或几乎同时)发生的短暂性when动作,一般要用 when。如:
I thought of it just when you opened your mouth. 就在你要说的时候,我也想到了。
when + 延续或非延续
简而言之,"While" 强调两个动作同时发生或一个动作的持续时间,而 "When" 强调一个动作发生的时间、一个的条件或一个动作的频率。while + 延续
举例说明
1.When he came in , he found rything changed
2. When he finished the work , it was late into the night
3. I was writing an article when he came in (when = and at that time)
4.While i was reading a news, my sister was watching TV
5.While i was in London , i made a while嘛就两个都长lot of friends
具体你可以参考这一段.
①I had hardly /scarcely closed my eyes when someone knocked at the door.=Hardly / Scarcely had I closed my eyes when someone knocked at the door.我刚一闭上眼,就有人在敲门了.when,while,as时间状语从句的区别
她喜欢午饭后躺一会儿。when,while,as显然都可以时间状语从句,但用法区别非常大.
一、when可以和延续性动词连用,也可以和短暂性动词连用;而while和as只能和延续性动词连用.
① Why do you want a new job when youve got such a good one already?(get为短暂性动词)你已经找到如此好的工作,为何还想再找新的?
②Sorry,I was out when you called me.(call为短暂性动词)对不起,你打电话时我刚好外出了.
③Strike while the iron is hot.(is为延续性动词,表示一种持续的状态)趁热打铁.
④ The students took notes as they listened.(listen为延续性动词)学生们边听课边做笔记.
1.从句动作在主句动作前发生,只用 when.
①When he had finished his homework,he took a short rest.(finished先发生)当他完成作业后,他休息了一会儿.
②When I got to the airport,the guests had left.(got to后发生)当我赶到飞机场时,客人们已经离开了.
2.从句动作和主句动作同时发生,且从句动作为延续性动词时,when,while,as都可使用.
①When /While /As we were dancing,a stranger came in.(dance为延续性动词)当我们跳舞时,一位陌生人走了进来.
②When /While /As she was a phonecall,I was writing a letter.(make为延续性动词)当她在打电话时,我正在写信.
3.当主句、从句动作同时进行,从句动作的时间概念淡化,而主要表示主句动作发生的背景或条件时,只能用 as.这时,as常表示“随着……”;“一边……,一边……”之意.
① As the time went on,the weather got worse.(as表示“随着……”之意)
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.
③As years go by,China is getting stronger and richer.随着时间一年一年过去,变得越来越富强了.
④The little girls sang as they went.小姑娘们一边走,一边唱.
⑤The sad mother sat on the roadside,shouting as she was crying.伤心的妈妈坐在路边,边哭边叫.
4.在将来时从句中,常用when,且从句须用一般时代替将来时.
①You shall borrow the book when I he finished reading it.在我读完这本书后,你可以借阅.
②When the mar es here for a visit next week,Ill talk with him about this.下周,来这参观时,我会和他谈谈此事.
三、when用于表示“一……就……”的句型中(指过去的事情).
.had hardly(=scarcely) done sth.when...=Hardly / Scarcely had .done sth.when...
②I had hardly /scarcely entered my room when the ephone rang.=Hardly /Scarcely had I entered my room when the ephone rang.我刚一走进房门,电话就响了.
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