状语从句讲解
英语语法讲解状语从句
Whatever （ = No matter what ） you say， I'll never change my mind.
八、方式状语从句
方式状语从句常由as， as if （though）， the way， rather than 等引导。
You can go swimming on condition that （ = if ） you don't go too far away from the river bank.
If he had come a few minutes earlier， he could have seen her.
e.g. He is disappointed because he didn't get the position.
As it is raining， I will not go out.
Now that you mention it， I do remember.
三、地点状语从句
引导地点状语从句的连词是where 和wherever等。 e.g. Sit wherever you like. Make a mark where you have a question.
一、时间状语从句
表示时间的状语从句可由when， as， while， whenever， after， before， till （until）， since， once， as soon as （或the moment ）， by the time， no sooner …… than， hardly （scarcely） …… when， every time等引导。
(完整版)状语从句的讲解最全的状语从句讲解
状语从句的讲解就是用一句话作状语分为：时间，地点,方式，原因，结果，条件，让步，目的，比较一、时间状语从句第一次见到你一见到你我就喜欢上了你直到见到你五岁时见到你When， as, while， before， after, since, till/until， as soon as no sooner…than…scarcely…when…hardly…when… the minute the second the instant the moment by the time 截止 immediately instantly directlyeach time every time next time the first time on doing sthwhenwhile 当…时as1。
when 1）当…时/ 延续性动词短暂性动词都可用2）这时/3）届时、到时I was watching TV when my cellphone suddenly rang这时When I was five years old I could speak five languagesThe wet weather will continue tommorow when a cold front is expected to arrive届时到时注意：时间状语从句中动作发生有前后时先发生的用过去完成时When my mother came back I had already gone to bed.2。
while 1）从句动词延续性2)同时发生3）对比的意味“然而”4）趁着He taught himself while he worked in a bank 延续性动词当他在银行上班时While we were working they were having a rest.对比While they were having a discussion ， they got very confused。
状语从句知识点详解(初中英语专项复习)14
状语从句知识点详解（初中英语专项复习）状语从句的概念: 用一个句子作状语来修饰动词和形容词，以表明动作发生或状态存在的时间、地点、原因等，这个句子就叫做状语从句。
状语从句的分类：状语从句共分为九大类，包括：时间、地点、原因、条件、让步、目的、结果、方式、比较状语从句。
下面分别讲解：一、时间状语从句概念：用来表示时间的状语从句，由when, while, as, till, until，before, after, since等引导。
由于时间状语从句的引导词所表示的意思并非一致，不同引导词表达不同的时间，它们在句子中对应的时态、语态等也有所不同。
例如：when /while引导的时间状语从句when引导的从句的谓语动词通常是瞬间动词，也可以是延续性动词。
从句动作可与主语动作通常先后发生也可同时发生。
I was writing when my sister came back.( come是瞬间动词，只能用when引导，不能用while)He often wrote me when/while he studied in Shanghai International Studies University.( study 是延续性动词，while可代替when)While my mother was cooking , I was playing chess with dad. (cook是延续性的动词，cook和play同时发生)I like playing chess while my sister likes reading stories.我喜欢下棋，而我姐姐喜欢看小说。
(while表示对比)when和while的区别还有：while引导的时间状语从句多用于进行时态，而when引导的时间状语从句多用于一般时态。
While we were playing games, our headmaster called me .我们正在做游戏的时候，校长叫我了。
状语从句的详细讲解
状语从句的详细讲解状语从句（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。
种类1.时间状语从句2.地点状语从句3.原因状语从句4.条件状语从句5.目的状语从句6.让步状语从句7.比较状语从句8.方式状语从句9.结果状语从句状语从句详细讲解：时间状语从句常用引导词：when, as, while, as soon as, before, after, since , till, until特殊引导词：the minute, the moment, the second, every time, the day，the instant, immediately , directly, no sooner … than, hardly …when, scarcely … when重点：when“当……时”，引导时间状语从句时，从句用于表示主句动作发生的特定时间。
如：The days get longer when spring comes. = When spring comes, the days get longer. 春天到来时，白天变得更长了。
二、before“在……之前”，引导时间状语从句时，表示主句动作发生在从句动作之前。
如：Close the door before you leave the room.离开房间前关上门。
三、after“在……之后”，引导时间状语从句时，表示主句的动作发生在从句的动作之后。
如：I went to school after I finished my breakfast.吃完早饭后我就去上学了。
英语状语从句讲解
英语状语从句讲解英语状语从句是英语语言学习中一个非常重要的部分，因为它可以让我们更加准确地描述一个动作发生的时间、地点、原因、结果和条件。
本文将详细介绍英语状语从句的概念、种类以及使用方法。
一、英语状语从句的概念英语状语从句是指在一个句子中做状语的从句，用来表示时间、地点、原因、结果和条件等语义。
一般由连词引导，放在主句之后，从句一般使用陈述语序。
二、英语状语从句的种类及示例1. 时间状语从句时间状语从句是指表示时间关系的从句，常用的引导词如when, while, before, after, as soon as, since等等。
时间状语从句通常放在主句前、后或中间，表示一个动作的时间或者发生的时间与主句所述时间的先后关系。
例如：When I was young, I loved playing soccer.（时间状语从句放在主句前，用when引导）I usually go to the gym after work.（时间状语从句放在主句后，用after引导）He has been working here since he graduated from college.（时间状语从句放在主句后，用since引导）2. 地点状语从句地点状语从句表示一个动作所发生的地点，通常由where、wherever 引导。
例如：Wherever you go, I will follow you. （地点状语从句中，wherever 引导）I will go wherever the wind takes me.（地点状语从句中，where 引导）3. 原因状语从句原因状语从句表示主句的动作发生的原因，通常由because、since、as等引导。
例如：Since it was raining outside, I chose to stay at home.（原因状语从句中，since 引导）Because she was sick, she couldn't go to the party.（原因状语从句中，because 引导）4. 结果状语从句结果状语从句用于表示主句所述的情况或动作的结果，通常由so、such...that等引导。
英语状语从句讲解
状语从句一、状语从句定义在复合句中，由一个从句充当状语，该从句被称为状语从句。
它可以用来修饰谓语（包括非谓语动词）、定语、状语或整个句子。
状语从句通常由一个连词引导，也可以由一个起连词作用的词组引导。
二、状语从句的分类(一)时间状语从句在时间状语从句中，要注意时态一致问题。
一般情况下主句将来时的时候，从句要用一般现在时表示将来。
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关系，又可分为:1)表同时性，即主从句谓语动作同时发生或几乎同时发生。
其连词有：as（当…时候）、while、when、as soon as、once（一旦…）等。
例如：Strike while the iron is hot.I do every single bit of housework, while my husband Bob just does the dishes now and then.As/When I came home, I met one of my old friends.I will ring you up as soon as he comes.Once you see her son, you will never forget him.高考例题：1. How can you expect to learn anything ______ you never listen?A. in caseB. even ifC. unlessD. when2. He transplanted the little tree to the garden ______ it was the best time for it.A. whereB. whenC. thatD. until3. Don’t be afraid of asking for help ______ it is needed.A. unlessB. sinceC. althoughD. when2)表先时或后时，即主句的谓语动作发生在从句之前或之后，主要连词有：before、after、when(=after)等。
状语从句讲解
状语从句讲解状语从句是英语语法中的一个重要概念，它在句子中起到修饰谓语动词或整个句子的作用。
本文将详细解释状语从句的定义、功能和常见类型，并给出一些例句以帮助读者更好地理解和运用状语从句。
状语从句是一个从句，它在句子中充当状语的角色，用来说明动作发生的时间、地点、原因、方式、条件等情况。
状语从句通常由连词引导，常见的引导词包括when（当...时候）、where（在...地方）、why（为什么）、how（如何）等。
通过使用状语从句，我们可以使句子更加丰富、具体和准确。
首先，让我们来看一下状语从句的功能。
状语从句可以用来表示时间关系。
例如，“I will call you when I arrive home.”（当我到家时，我会给你打电话）这个例句中的状语从句“when I arrive home”说明了动作“call”发生的时间。
其次，状语从句可以表示地点关系。
例如，“She looked around to see where the noise was coming from.”（她四处看看，想知道声音是从哪里传来的）这个例句中的状语从句“where the noise was coming from”说明了动作“look around”的地点。
此外，状语从句还可以表示原因、条件和方式等关系。
例如，“He couldn't go to the party because he was sick.”（他因为生病所以不能去参加聚会）这个例句中的状语从句“because he was sick”表示了动作“couldn't go”的原因。
在使用状语从句时，需要注意一些语法规则。
首先，状语从句通常放在主句之前或之后，具体位置取决于需要强调的内容。
其次，状语从句的谓语动词通常使用一般现在时，而不受主句的时态影响。
例如，“I will call you when I arrive home.”（当我到家时，我会给你打电话）中的“arrive”使用的是一般现在时。
状语从句讲解经典
意思为既然或考虑到 (原因状语从句) It was foolish of you to take a taxi when you could easily walk there. How can they learn anything when they spend all their spare time watching television? Why do you want a new job when you have got such a good one? There is no point （in） owning a car when we have so good a public transport system. Why use metal when you can use plastic? How can he get the promotion when his boss dislikes him?
I will tell her about it when I see her. I was about to fall asleep when my sister came in. I will go home when he comes back.
I recognized the thief when/ as I passed him. When he finished his lecture, people stood up and applauded. I was walking on the street when I came across an old friend. We were about to set off when it began to rain. He had just finished the work when the doorbell rang. We were on the point of driving away when the policeman signed us to stop.
英语语法：五类状语从句的翻译讲解
【导语】状语从句（AdverbialClause）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。
以下内容由©⽆忧考⽹整理发布，欢迎阅读参考！更多相关讯息请关注©⽆忧考⽹！⼀、时间状语从句1. 译成相应的时间状语1) 与原⽂顺序⼀致While she spoke, the tears were running down.她说话时，泪⽔直流。
2) 后置改前置Please turn off the light when you leave the room.离屋时请关灯。
2. 译成“刚（⼀）……就……”的句式When I reached the beach, I collapsed.我⼀游到海滩，就昏倒了。
3. 译成并列的分句1) 译⽂前置They set him free when his ransom had not yet been paid.他还没有交赎⾦，他们就把他释放了。
2) 后置不变I was about to speak when Mr. Smith cut in.我正想讲，史密斯先⽣就插嘴了。
⼆、原因状语从句1. 译成表“因”的分句1) “因”在“果”之前The crops failed because the season was dry.因为⽓候⼲旱，作物歉收。
2) “果”在“因”之前She could get away with anything, because she looked such a baby.她能渡过任何风险，因为她看上去简直还像娃娃模样。
2. 译成因果偏正复句中的主句Pure iron is not used in industry because it is too soft.纯铁太软，所以不⽤在⼯业上。
状语从句(超详细讲解)
状语从句引导状语从句的从属连词：（包括：时间，地点，原因，条件，让步，结果，目的，方式，比较等）1时间状语从句：A. *when: 从句可用1)非延续性动词，表点时间=at the time when…2)延续性动词，表段时间，此时可与while / as互换。
注：a)从句中的动作既可与主句动作同时发生b)也可在主句动作之前或之后发生。
后者不可与while/as 两者换用。
.When I got home, he was having supper. b).When(=Before) I got to the party , some guests had left.When(=After)he finished his work, he took a short rest.3）也可做并列连词，“这时”be about to do/ be going to do/ be doing… when…had hardly/just/scarcely/not done…when…*while:1）“在…期间”；从句只能用延续性动词，表段时间=during the time when...2）当“趁着”讲。
3) “尽管” = althougheg.____ I admit that the problems are difficult, I don’t agree that they can’t be solved.A. WhileB. WhenC. AsD. Because3）也可做并列连词，表对比关系，“而”。
*as: 1）“随着”，指动作的进程(with也有“随着”之意，但是介词，只跟短语。
)“一边```一边```”，强调主从句谓动的同时发生。
1._______________he was in Beijing, he made a lot of friends.--->When /While in Beijing,…2._______________he was studying in Beijing, he made a lot of friends.--->When /While studying in Beijing,…--->During the time when he was( studying) in Beijing,…3.______he arrived in Beijing, he received a warm welcome.--->At the time(when )he arrived in Beijing,…/At the time of his arrival, …4. _____ time goes on, the situation is getting worse and worse.5. The atmosphere gets thinner and thinner______ the height increases. (从句)--->with the increase of the height. （短语）6. The students took notes ______they listened./ He hurried home, looking behind _____ he went.7. Strike __________the iron is white-hot. 趁热打铁。
英语语法讲解课件-状语从句课件
I will leave if he comes.
The train had been away when I arrived.
过去配过去
过去配过去
现在配现在
现在配现在
前引：根据主从句的三种时间关系，分为主 从句同时发生、主从句都没有发生、主从句一前一后发生三类句型， 每种句型分别对应独特的句式
地点状语从句 引导地点状语从句的主要有:where, wherever及- where构成的复合词。
We shall go where people are kind.
We received a warm welcome everywhere we arrived. 我们每到一个地方都受到了热烈的欢迎。
01
02
03
条件状语从句 最常用的引导词有: if， if only（if 的强调式）, unless (= if not)， as long as， so long as
1
E.G.
2
As long as I live, I shall work hard.
3
You can’t learn it well unless you work hard.
E.G. When/As he was eating his breakfast, he heard the door bell ring. While I was reading, he was playing. The mother didn't go to bed until her little daughter returned home last night. 昨晚母亲等到她的小女儿回家才睡觉。
状语从句讲解
状语从句讲解一、概念：状语从句（Adverbial Clause）----指用以修饰谓语、非谓语动词、定语、状语或整个句子的句子，当副词使用。
状语从句一般由从属连词引导，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。
二、分类1.时间状语从句2.地点状语从句3.原因状语从句4.条件状语从句5.目的状语从句6.让步状语从句7.比较状语从句8.方式状语从句9.结果状语从句（一）时间状语从句常用引导词：when, as, while, as soon as, before, after, since , till, until特殊引导词：the minute, the moment, the second, every time, the day，the instan t, immediately , directly, no sooner … than, hardly …when, scarcely … when1.while在...期间:He visited a lot of places while he was traveling.他在旅行期间参观了许多地方。
2.as在...的同时；一边...一边...:We always sing as we walk.我们总是一边走一边唱。
3.after在...之后:He left the classroom after he had finished his homework.他做完作业之后就离开教室。
4.before 在...之前:He had worked in a bank for a year before he came here.他来这里之前已经在一家银行里工作一年了。
5.as soon as 一…就…:We began to work as soon as we got there.我们一到那就开始工作。
英语状语从句的讲解和例子
英语状语从句的讲解和例子英语状语从句的讲解和例子状语从句是一种从句，它位于句子的其他成分之前，作状语，表示时间、原因、条件、让步、结果、目的、方式、比较等意义。
状语从句中的动词要用陈述句语序，即谓语动词用一般现在时，谓语动词变成主语前有任何插入语时，谓语动词用一般过去时。
1、时间状语从句时间状语从句的关联词有：when，while，as，before，after，since，until，as soon as，hardly…when，no sooner…than，the moment，as long as，whenever等。
例句：1) I will go there when I finish my work.2) We had scarcely arrived when it started to rain.2、原因状语从句原因状语从句的关联词有：as，because，since，now that，for，in that，inasmuch as，as if，as long as，where（as）等。
例句：1) I can't go out because I have to finish my homework.2) As he was ill, he couldn't go to school.3、条件状语从句条件状语从句的关联词有：if，unless，only if，provided（that），supposing（that），in case，on condition（that），even if，so longas等。
例句：1) If it rains tomorrow, we won't go out.2) I will finish the work even if it takes me all night.4、让步状语从句让步状语从句的关联词有：though，although，while，whereas，no matter（how），whatever，regardless（of）等。
(完整版)状语从句超详细讲解
(完整版)状语从句超详细讲解状语从句是复合句的一种，它能够起到修饰主句的作用。
本文将详细讲解状语从句的定义、分类以及使用方法。
定义状语从句是一个修饰、说明主句的从句。
它能够表达时间、地点、原因、条件、目的、方式等等不同的状况或情况。
分类根据状语从句的引导词，我们可以将其分为以下几种类型：1. 时间状语从句：用于表示何时发生或发生过的情况。
常用引导词有：when, while, as, before, after, until, since, as soon as等。
2. 地点状语从句：用于表示事件发生的地点。
常用引导词有：where, wherever。
3. 原因状语从句：用于表示事件的原因。
常用引导词有：because, since, as等。
4. 条件状语从句：用于表示某种条件下发生的情况。
常用引导词有：if, unless, provided that, as long as等。
5. 目的状语从句：用于表示主句中的动作或状态的目的。
常用引导词有：so that, in order that。
6. 方式状语从句：用于表示主句中的动作或状态发生的方式。
常用引导词有：as, as if, as though。
使用方法在使用状语从句时，需要注意以下几点：1. 引导词的选择要准确。
不同类型的状语从句需要选择相应的引导词，以确保表达的准确性。
2. 状语从句的位置可以灵活调整。
可以将状语从句放在主句之前、之后或中间，但要注意语序的调整，以保证句子的通顺。
3. 使用适当的标点符号。
根据句子结构和语义需要，可以在状语从句和主句之间使用逗号、连词等标点符号。
4. 注意主从句的时态和语态一致性。
主句和状语从句之间的动作发生时间要一致，并保持相同的语态。
总结状语从句是一种修饰主句的从句，能够表达时间、地点、原因、条件、目的、方式等不同状况。
根据引导词的不同，状语从句可以分为时间状语从句、地点状语从句、原因状语从句、条件状语从句、目的状语从句和方式状语从句。
状语从句讲解及习题附答案
状语从句〔一〕状语从句概述〔二〕状语从句详解1. 时间状语从句2.地点状语从句3.条件状语从句4.原因状语从句5.目的状语从句6.结果状语从句7.让步状语从句8. 比拟状语从句9.方式状语从句练习一一. 单项填空1. _______ he’s old, he can still carry this heavy bag.A. ThoughB. SinceC. ForD. So2. ---Do you know if he _______ to play basketball with us"---I think he will e if he ______ free tomorrow.A. es; isB. es; will beC. will e; isD. will e; will be3. In the zoo if a child _____ into the water and can’t swim, the dolphins may e up ______ him.A. will fall; to helpB. falls; to helpC. will fall; helpD. falls; helping4. I don’t remember ________ he worked in that city when he was young.A. whatB. whichC. whereD. who5. We will stay at home if my aunt ________ to visit us tomorrow.A. esB. eC. will eD. is ing6. The police asked the children _______ cross the street ________ the traffic lights turned green.A. not; beforeB. don’t; whenC. not to; untilD. not; after7. I was late for class yesterday _______ there was something wrong with my bike.A. whenB. thatC. untilD. because8. I’ll go swimming with you if I ________ free tomor row.A. will beB. shall beC. amD. was9. In the e*am, the ________ you are, ______ the _______ mistakes you will make.A. careful; littleB. more careful; fewestC. more careful; fewerD. more careful; less10. You should finish your lessons _______ you go out to play.A. beforeB. afterC. whenD. while11. I hurried _____ I wouldn’t be late for class.A. sinceB. so thatC. as ifD. unless12. When you read the book, you’d better make a mark _______ you have any questions.A. whichB. thatC. whereD. though13. The teacher raised his voice _______ all the students could hear him.A. forB. so thatC. becauseD. in order14. He took off his coat _______ he felt hot.A. becauseB. asC. ifD. since15. It is ______ that we’d like to go out for a walk.A. a lovely dayB. too lovely a dayC. so lovely a dayD. such lovely a day16. Mary had ______ much work to do that she stayed at her office all day.A. suchB. soC. tooD. very17. _______ I felt very tired, I tried to finish the work.A. AlthoughB. BecauseC. AsD. As if18. ______ the day went on, the weather got worse.A. WithB. SinceC. WhileD. As19. ______ well you can drive, you must drive carefully.A. So long asB. In order thatC. No matter howD. The moment20. Write to me as soon as you ________ to Beijing.A. will getB. getC. gettingD. got二. 根据中文意思完成以下英语句子1. 不管他跟我开什么玩笑，我都不生气。
状语从句的用法及主要讲解
状语从句的用法及主要讲解状语从句主要用来修饰主句或主句的谓语。
其实状语从句也是有一定的使用方法的。
下面店铺就给大家介绍状语从句的用法讲解。
状语从句的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。
状语从句是英语学习中的一个语法重点，也是历年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。
时间状语从句的介绍1. 引导时间状语从句的从属连词很多，常见的有before, after, when, while, as, since, till, until, as soon as 等。
2. 表示“当…时候”的 while, when, as 的用法区别是：while从句中的谓语动词必须是延续性动词;表示带有规律性的“每当”或当主、从句谓语动词的动作发生有先后时，只能用when;当表示“一边…一边…”或“随着”时，只能用as。
另外，用于此义的 as 所引导的时间状语从句谓语只能是动作动词，不能是状态动词。
如下面一道高考题的答案是B 而不能是A：“I’m going to the post office.” “_____ you’re there, can you ge t me some stamps?”A. AsB. WhileC. BecauseD. If3. until 在肯定句中通常只连用延续性动词，表示相应动作结束的时间;在否定句中通常连用非延续性动词，表示相应动作开始的时间，意为“直到…才”。
如：He waited until she was about to leave. 他等着一直到她准备离开。
I did not begin to work till he had gone. 他走了后我才开始工作。
(完整版)状语从句讲解
状语从句定义：在句中作状语的从句是状语从句，修饰主句中的动词、形容词或副词等。
状语从句由从属连词引导，从属连词在句中不充当句子成分，只起连接作用，状语从句放在句首时，要用逗号，放在句尾时不用。
状语从句主要用来修饰主句或主句的谓语。
一般可分为九大类，分别表示时间、地点、原因、目的、结果、条件、让步、比较和方式。
尽管种类较多，但由于状语从句与汉语结构和用法相似，所以理解和掌握它并不难。
状语从句的关键是要掌握引导不同状语从句的常用连接词和特殊的连接词即考点。
现分别列举如下:一、时间状语从句1.when, while和as的用法(1)when既可引导一个持续动作，也可引导一个短暂性动作.when强调主从句动作的发生有先后。
如：①When he got there, the classroom had been cleaned.他到的时候，教室已打扫过了。
(主句动作发生在从句动作之前)②He went to play football when he finished his homework.做完作业后他就去踢足球了。
(主句的动作发生在从句动作之后)when可作并列连词用，相当于just then，at the time，前一分句多用进行时、be about to或be on the point of doing，表示“正在做..，就在这时发生了另外一件事”或“届时”。
如：①I was reading when he suddenly came in.②I was about to leave when the telephone rang.(2)while强调主句动作发生在从句动作所发生的时间段内，从句的动作必须是延续性动词。
如：①Strike iron while it’s still hot.②Will you please take care of my house while I was away?在这一情况下，从句的动作一定是延续性动词，如果是非延续动词，要用when。
状语从句的时间原因条件等用法详细讲解
状语从句的时间原因条件等用法详细讲解状语从句的时间、原因、条件等用法详细讲解状语从句是指在复合句中作为状语的从句，用来修饰、限制主句中的动作或状态。
在英语中，状语从句主要有时间、原因、条件等多种用法。
下面将详细讲解状语从句在时间、原因、条件等方面的应用。
一、时间状语从句时间状语从句是用来表示主句中的动作或状态发生的时间或顺序关系。
常见的引导时间状语从句的连词有：when（当...时候）、before （在...之前）、after（在...之后）、as soon as（一...就）、while（当...的时候）、until（直到...为止）等。
1. 当...时候当主句中的动作或状态发生时，使用连词when引导时间状语从句。
例如：I will call you when I arrive home.（当我到家的时候，我会给你打电话。
）2. 在...之前表示主句中的动作或状态发生之前，使用连词before引导时间状语从句。
例如：Please finish your homework before you go out to play.（在你出去玩之前，请先完成作业。
）3. 在...之后表示主句中的动作或状态发生之后，使用连词after引导时间状语从句。
例如：She always helps her mother after she finishes her homework.（她总是在完成作业后帮助她的妈妈。
）4. 一...就表示主句中的动作或状态一发生，立刻使用连词as soon as引导时间状语从句。
例如：He went to bed as soon as he got home.（一到家，他就去睡觉了。
）5. 当...的时候表示主句中的动作或状态正在进行时，使用连词while引导时间状语从句。
例如：She was reading a book while her brother was watching TV.（她正在读书，而她的弟弟在看电视。
状语从句讲解
状语从句讲义状语从句在复合句中作状语，其位置较灵活，可以在主句之前、之后或中间(放在句首时状语从句后面常用逗号，放在句末时状语从句前面往往不用逗号)。
时间状语从句when, while, as, before, after, till/until, since, as soon as地点状语从句where原因状语从句because, since, as, for方式状语从句as, as if / though目的状语从句so that, in order that结果状语从句so…that…, such…that… , so that条件状语从句if, unless,让步状语从句although, though, as一．目的状语从句的用法目的状语从句用以补充说明主句中谓语动词发生的目的。
可以由表示“为了，以便，目的是”的so that(有时省略so)，in order that引导,或in case “以防”引导。
谓语常含有may, might, can, could, should, would等情态动词。
【注意】in order that与in order to的区别：in order that+从句in order to+动词原形（in order to后面加的那个不叫目的状语从句，叫目的状语）例：They both worked day and night in order that they could pay off their debt.= They both worked day and night in order to pay off their debt.他们夜以继日地工作以便能把债还清。
目的状语从句的一个特点：由于目的都是未来的行为，所以从句中一般用表示未来可能性时态，比如上面两句中的could。
当然还可以用will, would, can,等//They set out early (so)that they might arrive in time.他们早点动身，以便及时到达。
状语从句讲解
(1) 当主句为将来时态或具有将来意义时，时间状语从 句通常要用一般现在时表示将来意义。 Turn off the lights before you leave. I will tell him as soon as he arrives. (2) 与since 从句搭配的主句的时态通常是现在完成时 态。 He has lived here since 1999. Where have you been since I last saw you?
Before 与 after
1. Finish your homework ________ you go out to play.
2. He had walked three days ________ he found water.
3. It was not long _________ he left his hometown.
填空
1.I ____________ (be) at his bedside since he ________ (become) ill.
2.It _____________ (be) two years since we _______ (be) university students.
3._____________________________________ (一… 就…) he saw the monster, he turned pale.
as soon as, immediately, directly, instantly, the moment, the instant, the minute
I will go there directly I have finished my
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时间状语从句When; while; as; wheneverWhen; while; as表示主句谓语动作和从句的谓语动作同时发生或者几乎同时发生。
When①When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。
When I got home, my family were already having dinner.When they were still talking and laughing, the teacher came in.②当when 的意思是“正当……的时候(and at that moment)”时，when 通常跟在前一分句之后。
He was about to go to bed when the doorbell rang.③when 表示“虽然，尽管”的含义，相对于although或since.He walks when he might take a taxi.How can you hope for mercy yourself when you show none?④when还可以强调特定的时间，还可以表示从句的动作先于或后于主句的动作。
When I had given Mary the spare ticket, I found my own already gone.When I finally got there, the meeting had been on for ten minutes.While① while 通常表示一段时间，从句中用持续性动作做谓语。
Strike while the iron is hot.She fell asleep while she was reading the newspaper.② while有时可以用着并列连词，表示对比，可译成“……而……”。
I am fond of English while he likes maths.We slept while the captain kept watch.She thought I was talking about her daughter, while in fact, I was talking about mine.③ while有时可引导让步状语从句，“虽然”。
While they love the children, they are strict with them.As① as 表示“当……的时候”，往往和when/while通用，但他着重强调主句与从句的动作或事情同时或几乎同时发生。
The thief was caught as/ when he was stealing in the supermarket.I saw Jim as/when he left the meeting room.②as 表“一边……一边……”，强调从句和主句两个动作交替进行或同时进行。
They talked as they walked.He looked behind from time to time as he went.We listened to the singer sing as he played the guitar.② as表示“随着”。
As time goes on, it’s getting warmer and warmer.As he grew older, he became less and less active.若表示两个短暂性的动作几乎同时发生时，用as多于when。
As he finished his speech, the audience burst into applause.WheneverWhenever 是when的强势语，它描述的不是一次性动作，而是经常发生的习惯性动作。
Whenever we met with difficulties, they came to help us.Before; afterBeforeBefore表示在一段时间之前。
He had learned English for three years before he went to London.Before往往带有否定的含义。
Take it down before you forget it.He ran off before I could stop him.常用句型：It is/ was/will be …before …It will not be long before you regret what you have done.It was minutes before the police arrived.After表在一段时间之后。
Till; until①用于肯定句时，表示“直到……为止”，主句的谓语必须是持续性的动作。
Everything went well until/till that accident happened.I shall wait until/till you come back.②not…until/till 表“直到…才…”，主句的谓语动词通常要用短暂性的动作，此时until/till可以用before 代替。
I didn’t leave until/ till/ before she came back.People do not know the value of their health till/until/ before they lose it.③当not until位于句首时，主句中的主谓要使用倒装语序。
Not until she stopped crying did I leave.④在强调句型中一般只用until, 不用tillIt was not until she took off her dark glasses that I recognized her.Since; ever sinceSince表“自…以来”。
表动作从过去某一点时间一直延续到说话时间为止。
主句中通常为延续性动词的现在完成时，since从句中一般用短暂性动词的一半过去时。
Where have you been since I last saw you?Ever since从那时起直至现在，此后一直。
表示说话者强调主句动作或状态持续时间长，语气比since强。
Ever since they got married in 1950s, they have lived happily.Since还可以用作副词或介词The big clock was damaged during the war and has been silent (ever) since.You have made great achievements in your work since graduation.As soon asAs soon as “一…就“，表主从句动作紧接着发生的。
He rushed home as soon as he got the good news.Immediately; instantly; directly相当于as soon as,从句中用一般过去时。
“一…就”还可以用on/upon doing 结构来表示。
The moment; the minute; the instant; the secondHe said he’d do his homework the moment he got home.Hardly/scarcely…when; no sooner…than…这几个短语表示“刚…就…”，可以互换，主句通常用过去完成时。
He had no sooner started out than he felt homesick.当hardly, scarcely, no sooner位于句子开头时，主句需要倒装语序。
Hardly had she fallen asleep when a knock at the door woke her up.OnceOnce作连词时，也相当于as soon as, 但它含有的条件意味更浓，引导的从句较短。
Once it is gone, you will never get it back.Next time; the first time; the last time; every timeHe left me a good impression the first time we met.The last time I spoke to Bob, he seemed happy enough.By the time可以引导时间状语从句，意为“到…时为止”，主句一般要用完成时态。
By the time he was fourteen, Einstein had learned advanced mathematics all by himself.(从句为一般过去时，主句要用过去完成时。
)I shall have finished my work by the time you return.(从句为一般现在时，主句要用将来完成时。
)地点状语从句WhereWuhan lies where the Yangtze River and the Han River meet.Where there is a will, there is a way.地点状语从句之前，不要使用介词。
Wherever是where的强势语。
Wherever you go, I will go with you.EverywhereEverywhere they went, they were kindly received.原因状语从句BecauseBecause和for的区别：① for是并列连词，只用于连接表原因的分句，因此不能用于句首。
Because表原因时，可位于句首。
Because he did not obey the rules, he was punished.② for表示的是推断解释，because强调动作发生的直接原因。
The day breaks, for the birds are singing.He went to bed early, because he was tired.③ It is/was…that…和关联词not…but…引导的原因状语从句中，宜用because。