时间状语从句Before-After-Until-Since.doc

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初三英语语法状语从句

初三英语语法状语从句

初三英语语法状语从句状语从句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(rain hard 下大雨when got to school yesterday.While he was doing his homework, the telephone rang.As he walked along(沿着走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(熄灭.Let’s wait until the rain stops.We won’t start until Bob comes.Don’t get off(从下来until the bus stops.【Till是指直到某一特定事件发生的时候,而在那个时刻之后,该事情或状况仍将持续。

必修2module5Grammar时间原因状语从句

必修2module5Grammar时间原因状语从句

e.g. Why do you want a new job when you’ve got such a good one? get 为短暂性动词 Sorry, I was out when you called me.
call为短暂性动词 Strike while the iron is hot.
let’s have dinner. Translate the above sentences into Chinese.
原因状语从句中应注意的问题
as, because, for, since 的区别 1> as作为从属连词引导原因状语从句时,语气
不如because 强烈。它引导的从句常放在 句首, 说明原因, 后面的主句则说明结果。 2> because 引导从句时, 语气最强, 直接回答 why的问句。她引导的句子是语意中心所 在, 一般在句后。 (最强答why)
doesn’t take long to chop it down. ⑵ Since a lot of people make mistakes in
life, Mr. Smith wanted to give John a
chance. ⑶ Now that all the guests have arrived,
我正打算出去这时电话响。
I was about to go out when the phone rang. 我正在读书这时有人敲门。 I was on the point of reading books when someone knocked at the door.
4> as 还有 “因为” “作为” “随着” “一
边Tr…an.s.l.a一te边the...f.o..l”lowing sentences. 随着时间的流失, 天气变的越来越糟糕了。

英语时间状语从句的用法及有关说明

英语时间状语从句的用法及有关说明

英语时间状语从句的用法及有关说明一、普通类从属连词引导时间状语从句的普通类从属连词有when(当……时),while(在……期间),as(当……,一边……一边……),before(在……之前),after(在……之后),since(从……以来),till/until (直到),whenever(无论何时),as soon as(一……就)等。

如:When I went into the classroom, he was reading. 当我走进教室时,他正在看书。

He read a newspaper as he went along. 他边走边看报纸。

We must strike while the iron is hot. 我们必须趁热打铁。

I will tell you after they leave. 于他们走后我再告诉你。

I told him to come back whenever he wants to.我告诉他什么时候想回来就回来。

I waited till/until she was back. 我一直等到她回来。

Once time is gone, you will never get it back. 时间一旦失去就再也得不到了Things were different when I was a child. 我小时候情况与现在不同。

We must strike while the iron is hot. 我们要趁热打铁。

It’s a long time since I met you last.从上次见到你,已有很长时间了。

He waited until she was about to leave. 他等着一直到她准备离开。

注意:在时间状语从句中,不能用一般将来时、过去将来时态或将来完成时,而要用相应的一般现在时态、一般过去时或现在完成时来代替。

如:I’ll telephone you as soon as I get there.我一到达那里就打电话给你。

状语从句(原因,目的,时间,地点)

状语从句(原因,目的,时间,地点)

状语从句本质——用不同的连接词将主句与一个或几个分句连接起来,以表达主句与分句之间的逻辑关系。

主句分句连接词逻辑关系时间、地点、原因、目的、结果、条件、让步、比较、方式时间状语从句用来说明主句动作与从句动作发生时间上的先后关系类型常用连接词特殊连接词重点时间状语从句when, while, as, before,after, since, till, until,as soon as 名词:the moment, theinstant, the minute, theday, next time, everytime副词:instantly,immediately, directly 连词:no sooner …than,Hardly…when, scarcely …when 主句从句的时态搭配,延续性动词与非延续性动词的区别1. when 引导的时间状语从句可以理解为“当……的时候”时态搭配主从句都是过去时态主从句都用现在时态主句将来时态从句现在时态辨析The performer will already have played the music when we get there.The performer will be playing the music when we get there.是否可以用while 来替换?It is challenging for a company to remain inter-nationally competitive while the global economics are receding.※when, while, as 用法的区别when 相当于at that time ,引导的状语从句中谓语动词可以是延续性的也可以是非延续性的while ,as 相当于during that time, 引导的状语从句中谓语动词通常是延续性的随着英特网变得日益商业化,网络的使用对商人们非常有利。

状语从句

状语从句

7.比较状语从句 由than、as…as引导。如: Jim is taller than me. 吉姆比我高。 Lucy jumps as far as Lily. 露茜和莉莉跳得一样远。 8.方式状语从句 由as、as if等引导。如: Please do as I do. 请像我这样做。 She lay down as if she was ill. 她躺着似乎是病了。 9.让步状语从句。 通常由though、although、even if、Whatever等 引导。如: There is air around us, though we can't see it. 我们周围都是空气,尽管我们看不到。

Байду номын сангаас
(改错)
《中考指导》
中考考点2: if表 “是否”引导宾语从句可用将来时. C 考题:I don’t know if he __. If he __ , I’ll tell you. A. will come, will come B. comes, will come C. will come, comes D. comes, come 《中考指导》 中考考点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复合句。
中考考点3:※※※while从句用进行时 were readinng e.g.1) My parents _______________ (read) some newspapers while I ____________ (play) with my e-dog this was playing time yesterday.《中考指导》 2) While we ____________ (travel) in were travelling Australia last year, I visited Lucy who once taught English in our school. (上海市2004)

时间状语从句

时间状语从句

时间状语从句1. 引导时间状语从句的连接词有:when,whenever, while, as, before, after, since, until/till, as soon as,by the time, hardly /scarcely…when…(刚一……就……), no sooner…than…(刚一……就……),the time / the moment / the while / the second / theminute (一……就……), immediately, directly, instantly等。

2. when,while与as引导的时间状语从句(1)when的用法:1)When引导的时间状语从句中,其谓语动词可以是延续的,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。

When we were at school, we went to the library every day.The film had been on when we arrived.When you arrive in London, please give us a call.(when引导的从句表示将来意义时,从句需用一般现在时)2) when引导时间状语从句时,如果主从句的主语相同,从句中有be动词,则从句可以省略主语和be动词。

When (you are) in trouble, you can visit the man.When (he was) a young man, he was fond of hunting.3)when还可以用在某些固定的结构中:be about to do…when…, be doing… when…, be on the point of doing …when…, 表示某件事正在发生或刚刚发生,另一动作同时发生。

意为“在那时”。

高考英语语法复习:八种状语从句的用法

高考英语语法复习:八种状语从句的用法

高考英语语法复习:八种状语从句的用法状语从句状语从句有时间、地点、原因、目的、方式、结果、条件、让步等八种。

一、时间状语从句:引导词有after,before,as,once,since,till,until,when,whenever,while,as soon as,the moment/minute…(一…就),the time,the day,every time,next time,each time,by the time of,no sooner…than(一…就),hardly…when(一…就).例如:Each/Every time he comes here,he will drop in on me.每次他来这儿他都顺便看我.He was ill last time I saw him.上次我见到他时他病了.No sooner had she heard the news than she cried.她一听到这个消息就哭了.[辨析]when与whilewhen引导的从句动词可以是延续性的或短暂性的,while引导的从句中动词必须是延续性的;在“be…when…”句式中when表“at that time(就在这时)”意,这样用的when不能换为while;while有时并不表示时间,而表示对比,意“而”、“却”,when无这样的用法。

例如:When I got home I found the door locked./While(或When)we were working in the fields,it suddenly began to rain./He was wandering through the streets when a bike hit him./His pencil is red,while mine is yellow.[辨析]till与until一般情况下可以互换,但until可以位于句首,till则不能。

时间状语从句的用法及常见错误

时间状语从句的用法及常见错误

时间状语从句的用法及常见错误时间状语从句,是英语中的重要语言结构之一,相信很多学习英语的同学们都有接触过。

它的作用是在主句中描述时间,常常是表达事件发生的先后顺序。

然而,由于语法结构的复杂性以及细节的繁琐,使得许多学习者在真正应用时出现了一些常见的错误。

本文旨在介绍时间状语从句的用法及常见错误,帮助读者加深对此语法结构的理解,更好地运用它。

一、时间状语从句的用法时间状语从句指的是在主句中用来描述时间顺序或时间点的句子,通常由连词when、while、as、before、after、since、until等引导。

例如:- When I arrived at the station, the train had already left.- While I was walking in the park, I met an old friend.- After I finish my homework, I will go to bed.时间状语从句也可以放在句首、句中、句末等不同位置,需要根据语境进行灵活运用。

例如:- When I was young, I used to play football every day.- I met an old friend while I was walking in the park.- I will go to bed after I finish my homework.此外,时间状语从句与各种时态、语态和情态动词搭配使用。

具体来说:1. 在一般现在时中,时间状语从句中通常使用一般过去时来表示过去的时间点或延续时间:- I always watch TV when I have free time.- He speaks Chinese fluently as he has been learning it for many years.2. 在一般过去时中,时间状语从句中通常使用过去完成时来表示更早的过去时间点或动作的完成:- After she had finished her homework, she went to bed.- When I arrived at the airport, the plane had already taken off.3. 在一般将来时中,时间状语从句中通常使用一般现在时或一般将来时来表示将来的时间点或延续时间:- I will call you as soon as I arrive in Shanghai.- She will be very happy when she sees the gift.4. 在现在完成时中,时间状语从句中通常使用过去时间来表示已经完成的动作:- She has visited many countries since she graduated from university.- I haven’t seen him since we went to school.5. 在情态动词中,时间状语从句中通常使用过去完成时来表示动作的完成:- He should have arrived by now.- I would have finished the task if I had more time.二、时间状语从句的常见错误尽管时间状语从句的知识点看似简单,但在实际应用中却存在一些常见错误。

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时间状语从句Before/After/Until/Since
1、时间状语从句
(二)由before和after引导的时间状语从句的区别用法▲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引导的从句谓语用的是过去时,则主句动词多用过去完成时,这样以便体现动作发生的先后。

如:
It will be four days before they come back. (主将从现,一一对应)
他们要过四天才能回来。

Einstein almost knocked me down before he saw me. (几乎同时发生)
爱因斯坦几乎把我撞倒才看到我。

My father had left for Canada just before the letter arrived. (主过完从过)
我父亲恰好在信到之前去加拿大了。

They hadnotbeen married four months before they were divorced.
他们结婚还不到四个月就离婚了。

▲after表示主句动作发生在从句动作之后。

主句和从句
的动作的时间关系正好与before引导的从句相反。

如:
After you think it over, please let me know what you decide.
你仔细考虑过以后,告诉我你是怎样决定的。

After we had finished the work, we went home.
完成工作之后,我们回家了。

(从句用过去完成时,主句用一般过去时)
(三)till或until引导的时间状语从句的区别till和until 一般情况下两者可以互换,但是在强调句型中多用until。

但要注意的是:①如果主句中的谓语动词是瞬时动词时,必须用否定形式;
②如果主句中的谓语动词是延续性动词时,用肯定或否定形式都可以,但表达的意思不同。

③till不可以用在句首,而until可以放在句首。

如:
I didntgo to beduntil(till)my father came back.
直到我父亲回来我才上床睡觉。

It was not untilthe meeting was overthathe began to teach me English.
直到散会之后他才开始教我英语。

I worked until he came back.我工作到他回来为止。

(前肯意为否)
I didnt work until he came back.他回来我这才开始工作。

(前否意为肯)
Please wait until I arrived.在我到达之前请等我。

(四)since引导的时间状语从句的用法since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。

一般情况下,从句谓语动词用一般过去时,而主句的谓语动词用现在完成时。

但在It is +时间+since从句的句型中,主句多用一般现在时。

如:
I have been in Beijing since you left.(主现完从过去)
自从你离开以来,我一直在北京了。

Where have you been since I last saw you?(主现完从过去)自上次我和你见面以后,你到哪里去了?
It isfour yearssincemy sister lived in Beijing.
我妹妹不在北京住有四年了。

(今日重点句型,表示相反意思)
It isfive monthssinceour boss was in Beijing.
我们老板离开北京有五个月了。

(今日重点句型,表示相反意思)
(五)在时间状语从句中当主句是一般将来时或祈使句表示将来的意义时,时间状语从句用一般现在时。

如:
I’ll let him know as soon as she comes.(主将从现)她一来,我就会让你知道。

今日关键
用肯定或否定形式的Until 结构,意思有差别
It is +时间+since从句,意义有不同。

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