状语从句讲义
状语从句讲义(讲稿)
状语从句状语从句在高考试题中由于其他从句的干扰，以及倒装句，强调句的介入，使得状语从句更为复杂。
状语从句是一种副词性从句，通常由一个从属连词或一个起连词作用的词组引导。
状语从句1. 时间状语从句常见的连词(组)：when, while, as, before, after, once, till, until, as soon as, now that, hardly ...when, scarcely ...when, no sooner ...than等。
可以引导时间状语从句的副（介）词（短语）或名词短语：directly, instantly, immediately, by the time, the moment, the second, the minute, the instant, every time, each time, next time, the last time等。
注意点如下：(1) when, while, as引导的时间状语从句as表示“当……的时候”，往往和when/ while通用，但它着重强调主句与从句的动作或事情同时或几乎同时发生。
when(at or during the time)既可以表示在某一点的时候，又可以表示在某一段时间内，主句与从句的动作或事情可以同时发生也可以先后发生。
while强调一段时间，仅表示从句和主句的动作同时发生，并且有延续意义，该从句中的动词一般要用延续性动词，从句中常用过去进行时态或一般过去时态；当when表示a period of time时，两者可以互换。
She came up as I was cooking.(同时) 在我做饭时，她走了过来。
When we were at school, we went to the library every day.(在一段时间内) 当我们在学校时，每天都去图书馆。
While they were watching TV, I was preparing myself for the coming examination.他们在看电视，而我在为即将到来的考试做准备。
中考英语语法学习之状语从句讲义
中考英语语法学习之状语从句一、什么是状语从句?状语从句是指一个句子中，作为状语的从句。
状语从句通常由引导词引导，如连词if、whether、how、when、why 等。
状语从句的作用是修饰主句，起到说明、限制或补充等作用。
二、状语从句的分类1.时间状语从句时间状语从句是指用来说明事件发生的时间的从句。
它通常由连词when、while、since、before、after等引导词引导，用来修饰主句中的时间。
例如:I have been to China twice. (我第一次去中国是在两年前。
)He has been studying English for five years. (他已经学习英语五年了。
)They will arrive at the airport at 7 pm. (他们将在晚上7点到达机场。
)We had a meeting at 2 pm this afternoon. (今天下午我们开了一个会议。
)需要注意的是，时间状语从句通常放在主句之前或之后，但在某些情况下可能会放在主句中间。
2.地点状语从句地点状语从句是指用来说明事件发生的地点的从句。
它通常由连词where、why、how等引导词引导，用来修饰主句中的地点。
例如:I saw her in the library. (我在图书馆看到她。
)They are going to have a meeting in the conference room. (他们将在会议室里开会。
)He is studying in his bedroom. (他正在卧室里学习。
)We had dinner at a restaurant last night. (昨晚我们在一家餐厅吃了晚饭。
)需要注意的是，地点状语从句通常放在主句之前或之后，但在某些情况下可能会放在主句中间。
3.原因状语从句原因状语从句是指用来说明事件发生的原因的从句。
状语从句 讲义
状语从句在复合句中作状语，位置灵活。
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，让步状语从句,目的状语从句，结果状语从句,方式状语从句，比较状语从句。
时间状语从句1.when, as, whilea.when表时间，从句既可以用延续性动词，又可以用瞬间动词。
When I get there I will call you.如果when引导的时状的主语与主句的主语相同，而从句的谓语又是be动词时，那么从句中的主语与be 可省。
如果when引导的时状的主语与主句的主语相同时，往往可以用“when+分词”的形式代替该状从。
When （you are）in trouble, you can ask her for help.When I came into the room(When coming into the room), I found the light was off.b.while表时间，从句需用延续性动词，或者主句的动作发生在从句的动作进行过程中。
He came in while I was reading a book. I met her while I was in school.c. as表时间，与when相似，但侧重强调主从句动作同在时间点或同时间段进行。
同时可表示主句的动作随着从句的动作的变化而变化。
He jumps as he sings. As the wind rose, the noise increased.2.before(在……之前)与after（在……之后）See me before you leave. I saw them after I arrived.3. till与until肯定形式表示的意思是"做某事直至某时"。
否定形式表达的意思"直至某时才做某事"。
Wait till/untill I call you. 等着直到我叫你。
状语从句讲义
九大状语从句状语从句是副词性从句，它在句子中担任状语，修饰主句的动词、形容词、副词或句子。
(1)当主句是一般将来时、祈使句或主句中含有情态动词，这些词引导的从句要用一般现在时（主将从现）Don’t go to bed until you finish your homework.(2)when，while，as显然都可以引导时间状语从句，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。
①Why 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）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。
④The students took notes as they listened．（listen为延续性动词）二、when从句的谓语动词可以在主句谓语动作之前、之后或同时发生；while和as从句的谓语动作必须是和主句谓语动作同时发生。
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）②When I got to the airport，the guests had left．（got to后发生）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）②When ／While ／As she was making a phonecall，I was writing a letter．（make为延续性动词）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。
第10讲状语从句(讲义)中考英语一轮复习(学生版)
►第10讲 状语从句 （讲义）目录一 复习目标 掌握目标及备考方向二 考情分析 2023年中考情态动词考情分析 三网络构建知识点头脑风暴四情态动词考向1. 状语从句的概念和分类2. 掌握时间、原因、条件、目的、结果、让步、比较等状语从句连接词的用法3.提升必考题型归纳五真题感悟 中考情态动词经典考题【复习目标】1.掌握状语从句的概念和分类2.掌握时间、原因、条件、目的、结果、让步、比较等状语从句连接词的用法【考情分析】状语从句做题方法： 1.翻译题干2.把题目中的逻辑关系理顺3.带入连接词一一对比，看谁最合适4.千万别忘了主将从现，主过从过等等时态规则5.多读状语从句培养语感，做题速度也会提升状语从句是历年各省市中考必考知识点。
从考查形式看，一般有单项选择、完形填空、词语运用等。
所占分值通常为2～4分。
另外注意状语从句和定语从句、名词性从句的区别；从命题意图看，侧重考查考生的具体语言环境中使用连词的能力。
【网络构建】一、状语从句概述考向二状语从句的连接词概念：在复合句中作状语的从句叫作状语从句。
状语从句一般修饰主句中的动词、形容词或副词等。
功能：九大状语从句分别表示（时间、条件、原因、地点、目的、结果、方式、让步、比较）等意义。
位置：位置灵活，可用于主句之前或之后。
1．when, while, as引导的时间状语从句2. 比较until和till此两个连词意义相同。
肯定形式表示的意思是＂做某事直至某时＂，动词必须是延续性的。
否定形式表达的意思是＂直至某时才做某事＂。
动词为延续性或非延续性都可以。
正确使用这两个连词的关键之一就在于判断句中的动词该用肯定式还是否定式。
肯定句：I slept until midnight. 我一直睡到半夜时醒了。
Wait till I call you. 等着我叫你。
（在肯定句中可用before代替。
例如：Let’s get in the wheat before the sun sets.）否定句：She didn’t arrive until 6 o’clock. 她直到6点才到。
中考英语状语从句讲义
状语从句一：定义地点时间1.Wukong beat Bajie in a hole yesterday.Wukong beat Bajie where they stayed when it was dark.总结：状语：动作发生的时间地点状态目的条件等。
状从：状语的位置是一个句子。
二.状语从句的分类1.时间状从引导词：since、ever since、until、not until、till 、after、before when while as 、as soon as、the moment、whenever While he was watching TV, his father came back.When I was in China, I visited many places of interest.As he walked along the street, he sang happily.(动作同时发生)2．地点状语从句引导词：where（在…地方）wherever（无论哪里）Where there is a will, there is a way.Wherever you go, I will be waiting for you.练习：You should put the book (where/wherever)you found it.(where/wherever)I am, I will be thinking of you.3.让步状语从句引导词：although/though (尽管虽然)—不能与but连用even if/even though（即使）Even if it rains tomorrow, we won’t change our plan.He runs fastest even though he is the shortest.Even if / Even though she laughs at him, he likes her.练习---翻译虽然我们已尽了最大的力量，但还是输了。
高中英语之状语从句讲义
状语从句一、基本概念定义：在复合句中由从句表示的状语称作状语从句，它可以用来修饰谓语（包括非谓语动词）、定语或状语，或是整个句子。
状语从句通常由一个连词引起，也可以由一个起连词作用的词组引起，有时甚至不需要连词直接和主句连接起来。
状语从句一般分为九大类（见下表）：状语从句类别时间状语从句地点状语从句原因状语从句目的状语从句结果状语从句条件状语从句方式状语从句比较状语从句让步状语从句1．时间状语从句：在时间状语从句中，要注意时态一致，一般情况下主句是将来时的时候，从句要用一般现在时。
可以引导时间状语从句的连词很多，根据意义和主从句之间的时间关系，又可分类如下：(1) 表示同时性，即主从句的谓语动作同时发生或几乎同时发生。
其连词有：when （当……的时候）, while（当……的时候）, as（当……的时候）, as soon as（一……就……）, once（一旦……）等。
如：Strike while the iron is hot. 趁热打铁。
While I am washing the floor, you can be cleaning the windows.（while含有对比的意思）我洗地板的时候，你可以擦窗户。
As / When I came home, I met an old schoolmate of mine.我回家的时候遇到了我的一位老同学。
I’ll ring you up as soon as I get an answer from him.我一有他的答复就给你打电话。
Once you see him, you will never forget him.你一旦见过他，就不会忘了他的。
(2) 表示先时或后时，即主句的谓语动作发生在从句之前或之后，主要连词有：after （在……后）, before （在……之前）, when (=after)等。
如：After / When the children had gone to bed, she began to prepare her lessons.（从句的动作发生在主句的动作之前，所以从句用了过去完成时）孩子睡觉了以后她开始备课。
状语从句讲义
状语从句何谓状语?●She studies hard．●Suddenly it began to rain．●Please come here in the evening．●He wrote with a red pencil．●He went to see a film．●My father was surprised to hear the news．●He sat there reading a novel．●The students went away laughing．●Seen from the hill, our town looks beautiful.●It can go all day and all night．●I’ll write to you as soon as I get there．修饰动词、形容词、副词以及全句的句子成份叫状语。
表示地点、时间、原因、目的、结果、条件、让步、程度、方式、伴随等何谓状语从句？由从句来充当状语，即为状语从句。
时间状语从句条件状语从句结果状语从句地点状语从句状语从句原因状语从句让步状语从句比较状语从句目的状语从句方式状语从句一、时间状语从句as, when, while, till / until, not …till / until, before, since, after, as soon as , the moment●I won’t know where he is until I get a letter from him.●It will be a long time before we meet again.●As soon as I reach home, I will tell him the news.●I was thin when I was a child.●When you are in trouble, you can visit this man.●My mother was cooking while I was doing my homework.●As I left the house, I forget the key.●As I get older, I get more optimistic.●He hurried home, looking behind as he went.●As he was going out, it began to rain.●Before they got to the bus stop, the bus had gone.●You may stay here until the rain stops.●I waited for him until he came back.●He didn’t go to bed until he had finished his work.●I haven’t heard from him since he lived here.●The moment I saw him, I recognized him.二、地点状语从句where， wherever●Just stay where you are.●Wherever you go, I’ll be right here waiting for you.●Where there is a will, there is a way.●You are free to go wherever you like.三、原因状语从句because, since, as, for, now that，considering●He didn’t come to school because he was ill.●He might be ill, for he didn’t come to school.●Since I must die, I must do it.●Since no one is against it, let us carry out the plan.●As he wasn’t ready in time, we went without him.●Now that everybody is here, let’s begin.●It was foolish of you to take a taxi when (既然)you could walk therein five minutes.四、条件状语从句if, unless (除非), as / so long as (只要), on condition (只要), in case (假使) , providing / provided (that), supposing （that）（假若，倘使），on condition that(条件是）等●We’ll come over to see you on Saturday if we have time.●We should serve the people as / so long as we live.●You will fail exam unless you study hard.●You will fail exam if you don’t study hard.●As long as you don’t lose heart, you will succeed.●Suppose/Supposing (that )they refuse us, who else can we turn to forhelp?●In case there is a fire, what will we do first?五、结果状语从句so, so … that, such … that，so that 等●The bus broke down so that we had to walk home.●He got to the station finally, only to find the train had left.●The train is so full that I could hardly turn around.●The stone is so heavy that nobody could move it.●She is such a nice girl that we all like her.六、目的状语从句so that, so, in order that, in case(以防，以免), for fear that , lestWe will sit nearer in front so we can hear better.He studied hard so that he might succeed.Betty got up early in order that she might catch the rain.Take your raincoat in case it rains.Be quiet in case you wake the baby.I shall write it down lest I should forget.七、让步状语从句though, although, even if, even though, while, no matter who/… , as，while●Though / Although he was old, he worked hard.●Most of us ignore the food advice, even if/ even though we know it to be true.●While I have sympathy for them, I don’t think they are right to do so.●We will make a trip even though the weather is bad.●Even if I were in your place, I wouldn’t take the job.●Whichever book you borrow, you must return it in a week.●No matter which book you borrow, you must return it in a week.●Whenever you come, don’t wake me up.●No matter when you come back, don’t wake me up.●No matter who he is, he will be punished.●Praised as he was, he remained modest.●Child as he is, the boy knows a lot.●Try as I might, I could n’t lift the stone.八、方式状语从句as， just as …so, as if /as though●Do as you like.●He spoke as if he had been there before.●Just as water is to fish, so air is to man.●I remember as if it were yesterday.●The man walked as if he were drunk.●The girl stood at the gate as if she was waiting for someone.as if, as though 引导的从句与事实相反，用虚拟语气。
状语从句讲义(教师版)(最新整理)
Adverbial clauseI. What is an adverbial? 什么是状语？Underline the adverbial of each sentence below.Eg:①He is writing carefully.②The baby is very happy.③You did the job quite well.④Surely, we will help you.⑤The concert will be on in the music hall.⑥The class meeting is held at 3:40, every Monday afternoon.Note:1. 在句中修饰动词、形容词、副词或整个句子，说明动作程度或状态等的成分叫作状语。
2. 状语通常用副词、介词短语或从句等形式来表现。
II. What is an adverbial clause? 什么是状语从句？Underline the adverbial and circle the conjunctions of each sentence below.①While I was walking along the street,I found many beautiful tall buildings.②②I shall go to the park unless it rains.③If it is fine tomorrow, we’ll go for a picnic.④We must camp where we can get water.Note: 由从属连词引出的句子作状语叫做状语从句。
Ⅲ. Types of adverbial clauseAdverbial clause of purpose, result, concession, comparison, time, place, reason, condition.1. Adverbial clause of purposeFill blanks with conjunctions above.(1). I took many photos of China with me in order that/so/ so that I could show people Chinese culture.(2). Mary lent me this book in order that/so/ so that I could read about a new diet.Note: 状语从句通常位于句后,目的状语从句表示主句动作的目的1. 从属连词: so that/ in order that2. 重点提示:①We started early so that we could catch the first train.He studies hard in order that he can pass the exam.从句中谓语动词常含情态动词:can/could, may/might, shall/should, will/would②We started early so that we could catch the first train.He studies hard in order that he can pass the exam.状语从句部分必须是完整句: so that/in order that +主语+谓语+(can/could等+动词原形) +其他③Paraphrase these sentences by using adverbial clause of purpose1. We started early in order to catch/so as to catch the first train.We started early so that we could catch the first train.2. He studies hard in order to pass/ so as to pass the exam.He studies hard in order that he could pass the exam.目的状语从句可与in order to/so as to/to 等转换。
重点中学英语语法讲义-状语从句
重点中学英语语法讲义-状语从句一、概说状语从句即指在主从复合句用作状语的从句。
按照其意义，状语从句可分为时时间状语从句、地点状语从句、原因状语从句、目的状语从句、结果状语从句、条件状语从句、让步状语从句等。
状语从句是高中英语学习中的一个语法重点，也是历年高考重点考查的内容之一。
学习状语从句主要应注意引导状语从句的从属连词的用法与区别，以及从属连词在一定的语言环境中的意义与用法。
二、时间状语从句1. 引导时间状语从句的从属连词引导时间状语从句的从属连词很多，如较基本的有before, after, when, while, as, since, till, until, as soon as 等：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。
除以上基本的引导时间状语从句的从属连词外，还有些本来不是从属连词却可用作从属连词的词：(1) 表示“一…就”的从属连词：the moment, the minute, the second, the instant, immediately, directly, instantly, once, no sooner…than, hardly…when等。
如：Immediately he came I told him the news. 他一来我就把消息告诉了他。
The moment I saw him I knew there was no hope. 我一看到他就知道没希望了。
We had no sooner set out than it began to rain. 我们刚出发就下雨了。
高中英语语法-状语从句讲义全
状语从句●定义：用“引导词+述语序”作状语●状语：修饰动作，把句子“壮大”He speaks English well.（方式状语）The sun rises in the east and sets in the west.（地点状语）●九种状语从句：时间、地点、原因、结果、方式、目的、条件、让步、比较I love you you love me(1)when—时间状语(2)where—地点状语(3)because—原因状语(4)so—结果状语(5)as—方式状语(6)in order that—目的状语(7) I will love you if you love me.—条件状语(8) I won’t love you even if you love me.—让步状语(9)more than—比较状语意思不同，形式不同，形意相关I read English loudly in the open air every morning.方式状语地点状语时间状语用从句形式当状语，即状语从句(一)时间状语从句引导词●till, untilA until B：A一直延续到B出现或发生就停止I slept until noon.I didn’t go to bed until midnight.I entered the room until 6:30.I didn’t enter the room until 6:30.as soon as,the minute, the moment, the instant, immediately, directlyno sooner…than, hardly…when, scarcely…when(结合倒装句)●before, after, 完成+since(自从)+过去时间--what was the party like?--Wonderful. It’s years I enjoyed myself so much.A. afterB. beforeC. whenD. sinceIt is 50 years the PRC was founded.A. afterB. beforeC. whenD. sinceI knew Mr. Green I knew Mrs. Green.A. long beforeB. before long过不了多久C. long agoD. after long●when, while, as（当）(1)while持续性动作或状态D on’t laugh while you are praying.(2)as伴随或较短的时间As I was speaking, some of you were sleeping.Mother was worried because little Alice was ill, especially father was away in France.A. asB. thatC. during介词，后面只能跟名词D. if(3)when当…时/正在这时，突然…/正要做某事，突然…When I was young, I listened to the radio.I was doing my homework when the earthquake happened.I was about to do my homework…Why do you want a new job you got such a good one already?A. thatB. whereC. whichD. whenhis plane arrived at the airport in Paris, I had already left for Los Angeles.A. WhileB. UntilC. WhenD. AsIt just isn’t fair. I was working as a waiter last month, my friends were lying on the beach.A. WheneverB. thoughC. forD. while延续的感觉(二)其他状语从句●whereAfter the war, a new school building was put up there had once been a theatre.A. thatB. whereC. whichD. when●because, since, asIt was he was ill that he didn’t go with us.A. since既然B. for为推断找解释C. as由于D. because直接原因或根本原因It must have rained last night, the ground is wet this morning.A. forB. sinceC. becauseD. asThe ground is wet, because it rained last night.He must be ill, he looks so pale.A. sinceB. becauseC. asD. for_____ you are free tonight, why not drop in and play chess with me?A. ForB. Since既然C. BecauseD. Even if●so…that…/ such…that如此…以致于Father was busy in working he often forget rest or meals.A. very, thatB. so, thatC. such, asD. enough, as●as(以…方式)，as if/ as thoughShe doesn’t speak her friend, but her written work is excellent.A. as well asB. so often asC. so much asD. as good as●unless=if +notYou will be late you leave immediately.A. unlessB. untilC. ifD. or●though, although, even if, even thoughwhile(虽然，而)whatever, whoever, wherever, whenever, however, whicheveras(尽管)thanAlthough he is a man, he likes skirts. = Man as he is, …Try he might, he couldn’t get out of difficulty.A. whenB. whereC. tillD. as, he can never solve the problem alone.A. Clever and intelligent he isB. Clever and intelligent as he isC. As he is clever and intelligentD. As clever and intelligent he is, mother will wait for him to have dinner together.A. However late is heB. However he is lateC. However is he lateD. However late he is●now that（既然）, in that（因为）●so that, in order that●lest, in case, for fear that(以防)if, as/ so long as, onceThe volleyball match will be put off if it .A. will rainB. rainsC. rainedD. is rainingThe new secretary is supposed to report to the manager as soon as she .A. will arriveB. arrivesC. is arrivingD. is going to arriveRemember to send me a photo of your son next time you to me.A. writeB. will writeC. are writingD. would write。
高中英语状语从句讲义
高中英语状语从句讲义一、地点状语从句地点状语从句通常由where, wherever 引导。
Where I live there are plenty of trees.Wherever I am I will be thinking of you.二、方式状语从句方式状语从句通常由as, （just） as…so…, as if, as though引导。
1）as, （just） as…so…引导的方式状语从句通常位于主句后，但在（just）as…so…结构中位于句首，这时as从句带有比喻的含义，意思是"正如…"，\"就像\"，多用于正式文体。
Always do to the others as you would be done by.Just as we sweep our rooms, so we should sweep backward ideas from our minds.2）as if, as though两者的意义和用法相同，引出的状语从句谓语多用虚拟语气，表示与事实相反，有时也用陈述语气，表示所说情况是事实或实现的可能性较大。
"仿佛……似的"，"好像……似的".They completely ignore these facts as if （as though） they never existed. 他们完全忽略了这些事实，就仿佛它不存在似的。
He looks as if （as though） he had been hit by lighting. 他那样子就像被雷击了似的。
It looks as if the weather may pick up very soon. 看来天气很快就会好起来。
三、原因状语从句比较because, since, as和for：1）because语势最强，用来说明人所不知的原因，回答why提出的问题。
状语从句讲义(教师)
状语从句状语从句连词时间as, when, while；till, until；after, before；whenever, each/every time, as soon as, once, immediately, instantly, the moment, theinstant, the minute, the second, the day, no sooner had…than,hardly(scarcely) had …when地点where, wherever, (everywhere)条件if, unless, when, once, as long as, so long as, providing, provided (that), supposing, suppose (that), granted that, given that,assuming that, on condition that, in case；only if 和if only原因because（因为）, since（既然）, as（因为，由于）, for（由于）, now (that)（既然）, seeing (that)（既然）, considering (that)（考虑到，因为）, in that（因为）, in view of the fact that (鉴于), notthat…, but that…(不是，而是)让步though(虽然)，although(虽然), even if/even though(即使), as(尽管), while(虽然，尽管), whatever(无论什么), whichever(无论那个), wherever(无论那里), whenever(无论何时), whoever(无论谁),however(无论怎样), no matter(无论什么), for all (that) (尽管),whether…or(无论…还是), in spite of the fact that/what(尽管),despite the fact that(不管) , whereas(然而，而), except that (只不过，除了)比较(not) as…as, (not) the same as, not so as, (not) such…as, than…, the more…, the more…方式as, as if/as though, the way目的that, in order that, so that, lest, for fear that, in case结果so that, so…that, such…that一、时间状语从句（一）引导时间状语从句的连词：When we lived together, we often helped each other.After he went abroad, his family never heard from him.It was a long time before everything returned to normal.She did the house chores while she watched TV.As time goes by, he reluctantly gave up the hope of finding his missing son.I’ll tell him as soon as he arrives.We haven’t heard from him since he left.Whenever mother went to town, she brought us some candies.Every time he passes by the lake, he’ll think of his childhood.He aged a lot the last time I saw him.The moment he heard of the accident, he came at once.They told me the news immediately they heard of it.I had no sooner gone to bed than the door bell rang.Hardly/Scarcely had he entered when it began to ring.Instantly the bell rang, the students came into the classroom.（二）注意：1.when, as, while 用法区别１）表示主句动作发生在从句动作过程中时，when, as, while都可以。
状语从句讲义
第二讲状语从句讲义2011/03/05状语从句（Adverbial Clause）状语从句指句子用作状语时，起副词作用的句子。
它可以修饰谓语、非谓语动词、定语、状语或整个句子。
根据其作用可分为时间、地点、原因、条件、目的、结果、让步、方式和比较等从句。
状语从句一般由连词(从属连词)引导，也可以由词组引起。
从句位于句首或句中时通常用逗号与主句隔开，位于句尾时可以不用逗号隔开。
状语从句在句子中作状语，修饰主句中的动词、形容词或副词等。
状语从句放在主句之前时，常用逗号分开；放在主句之后，一般不用逗号。
状语从句按其意义和作用可分为时间、条件、原因、让步、目的、结果、方式、比较和地点等9种。
1．时间状语从句时间状语从句主要由when, while, as, before, till(until); once, by the time, as soon as, no sooner…than和hardly…when及名词词组the moment等引导。
1）when当…的时候，强调特定时间。
e.g.When spring comes, he feels like a trip.When he was eating his breakfast, he heard the doorbell ring.2）while当…的时候，表示时间的一段，而不是一点，从句用持续性动词。
e.g.While he was eating his breakfast, his brother was still sleeping.My parents came back home, while I was watching TV.We must strike while the iron is hot.※while还可表示“然而，但是”，表示前后对照，说明情况相反。
e.g.Tom is very outgoing, while Jane is shy and quiet.Some people waste food while others haven’t enough.3）as多用在口语中，强调“同一时间”或“一前一后”，有时还有“随着”的含义。
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状语从句
一、定义状语从句在主从复合句中修饰主句中的动词、形容词或副词等，状语从句可由从属连词引导，与主句连接，位于句首时，常用逗号与主句分开，位于句末时，其前一般不用逗号。
状语从句根据其用途可以分为时间状语从句、原因状语从句、结果状语从句、条件状语从句、让步状语从句、方式状语从句、目的状语从句等。
状语从句的分类从句的引导词例句
时间状语从句When/while/as(当.......时），before
（在......之前），since（自从），
not...until（直到......才），as soon as
（一......就）
I was doing my home work when my mother
came in.
He did not go to bed until his father came back.
条件状语从句If（如果），as long as（只要），unless
（除非）Unless weather stops me,I go for a walk every day.
原因状语从句Because（以为），since（既然），as
（由于），for（由于）I like to eat apples because it's good for my health. Since everyone is here,let's begin our meeting.
目的状语从句So that（以便，为了），in order to
（为了）He gets up early morning so that he can catch the
bus.
结果状语从句So that（结果是），
so...that/such...that（如此......以至于）It's so hot that nobody wants to go out.
让步状语从句Though/although(尽管，虽然），even
if（即使），whatever（无论什么），
wherever（无论哪里），whenever（无
论何时）Wherever you go I will go
with you. Whenever you come,I will
wait for you.
比较状语从句Than（比......），as...as（和......一样），
not as/so...as(不如......)
He is as tall as Tom
地点状语从句where（......的地方），wherever（无
论哪里）
Sit wherever you like.
1.时间状语从句
1）当主句是一般将来时态或者祈使句，表示将来的意义时，从句用一般现在时，简称“主将从现”。
如：I'll ring you up as soon as I get to Beijing.
2) when引导的时间状语从句，表示主句和从句的动作同时发生；before表示主句的动作发生在从句的动作之前；after则表示主句的动作发生在从句的动作之后；as引导时间状语从句时，强调并行发生，不分先后。
3）until/till引导的时间状语从句
a.主句的谓语动词是延续性动词时，主句用肯定形式，表示这一动作或状态一直延续到until/till所表示的时间为止。
如：I'll wait for you till you come to see me.
b.主句的谓语动词是非延续性动词时，用否定形式表示主句的动作直到
until所表示的时间才发生。
构成句式not...until，有时不用not，而用其他如never，nothing等表否定意义的词。
如：I didn't go to bed until I finished my homework. 4) since引导的时间状语从句，表示“自......以来”，主句用一般现在时或者现在完成时，从句用一般过去时。
结构为：It has been...since+从句/It is ... Since +从句。
如：I have worked in this school since I graduated from Beijing University.
It is 10 years since I began to study English.
2.条件状语从句
1）主句为一般将来时，从句用一般现在时。
如：I'll visit the Great Wall if it doesn't rain tomorrow.
2）如果if引导的条件状语从句所表示的前提或条件将来可以实现或正在进行，从句要用现在完成时或进行时，主句通常用将来时。
如：We will give you a good price if you are thinking of buying it.
3）“祈使句+and/or引导的结果状语从句”中，祈使句在意义上相当于一个条件状语从句。
如：Use your head,and you'll find a way.=If you use your head,you'll find a way.
3.原因状语从句
1）原因状语从句通常用because，since，as引导。
这三个词所表示的语气有because到as逐渐减弱，由why提出的问题用because来回答。
如：why are you late? Because I'm ill.
2）如果状语从句所表示的原因是人们已知的事实，就要用since，而不用as 或because。
Since在这里的意思是“既然”如：Since you can't answer the question,you can ask someone for help.
4.目的状语从句
1）引导目的状语从句的词或词组有so that，in order that等，谓语中常含有may，might，can，could，will，would等情态动词。
如：He must get up early so that he can catch the first bus.
2）当从句主语与主句主语一致时，可用so as to，in order to 如：He worked day and night in order that he could succeed.=He worked day and night in order to succeed.
5.结果状语从句
1）由so...that，such...that引导
So...that与such...that的区别
So +形容词或副词+that
Such+a/an（+形容词）+单数名词+that
Such+（形容词）+复数名词+that
Such+（形容词）+不可数名词+that
So+形容词+a/an+单数名词+that
当名词前有many或much修饰时，用so而不用such。
如：She is such a lovely girl that we love her very much.=She is so lovely a girl that we love her very much.
We have so much time that we can finish the work very well.
2）so...that举行的否定形式可用简单句too...to...或not...enough to代替。
如：He is so young that he can't go to school.=He is too young to go to school.=He is not old enough to go to school.
练习题：。