高一英语初高中衔接专题九 状语从句的考点集汇 讲解和训练
完整版)高中英语状语从句讲解及练习
完整版)高中英语状语从句讲解及练习状语从句是指在句中作状语的从句，可以分为时间、条件、让步、原因、目的、结果、比较、地点、方式状语从句。
时间状语从句的连词有when、as、while、until、not…until、before、after、since、the minute、the moment、each、every、next、the first time等。
时间状语从句一般使用一般现在时或一般过去时。
当使用when、as、while这三个连词引导时间状语从句时，它们都表示“当…的时候”，但侧重点有所不同。
例如，当使用when引导时间状语从句时，从句的主语与主句主语相同，如果谓语动词是be动词，则从句主语和be可以省略。
而as则不仅表示“当…的时候”，还可以表示“一面…一面”或“随着”。
而while则强调主句的动作和从句的动作同时发生，从句一般用进行时，从句动词必须是延续性动词。
当使用until、not…until时，它们表示“直到…才”。
在肯定句中，主句常用延续性动词；在否定句中，主句常用短暂性动词。
需要注意的是，当not until…位于句首时，主句需要倒装。
例如，“Not until you had explained how did I manage to do it.”It was dark when he finally returned。
XXX the machine type upon seeing it。
As soon as I arrived home。
it began to rain。
Hardly had I arrived home when it began to rain。
XXX: real XXX: if。
even if/though。
unless/if。
not。
as long as/so long as。
as far as/so far as。
provided/providing(that)。
高中英语状语从句讲解与练习
高中英语状语从句讲解与练习高中英语状语从句一、时间状语从句1、when的用法（1）when既可引导一个持续性动作，也可引导一个短暂性动作，可用于表示主句和从句动作同时发生或从句动作先于主句动作，有时还可表示从句动作后于主句，意为“当……时候”。
（2）when在beabouttodo……when……，bedoing……when……，haddone……when……，beonone’sway……when……，beonthepointofdoing…when……等结构中作“那时突然”讲。
（3）when“既然、鉴于；尽管，虽然（位于主句之后）；如果”2、while的用法（1）则表示“当……时候”，鼓励的动作必须就是延续性的。
（2）用做同列连词，则表示相对关系“然而”。
（3）引导让步状语从句，相当于although,意为“虽然”，位于主句前。
（4）引导条件状语从句，相当于as/solongas，意为“只要”。
3、as的用法（1）则表示“当……时候”，特别强调同时出现，不所指先后。
（2）说明两种正在发展或变化的情况，表示“随着”，表示时间的推移。
（3）表示“一边……一边……”（4）强调两个动作紧接着发生。
（5）表示“虽然，尽管”（6）其他含义“正像，正如”，“做为”，“由于，因为”。
4、before的用法（1）一般意为“在……之前”“……才”，“……就”“还没有……”“免得”“不知不觉”“宁可，宁愿”，“否则，要不然”。
（2）itwillbe/was时间段before通常现在时/通常过去时。
在肯定句中，意为“多长时间之后才”；在否定句中，意为“用没法多长时间就”。
5、until和till（1）与肯定句连用，必须是延续性动词。
（2）与否定句属格，必须不为延续性动词，则表示“直至……才，在……之前不……”。
特别注意：notuntil可以用作特别强调句和倒装句强调句：itis/wasnotuntil…that…倒装句：notuntil放句首时，主句要部分倒装。
高中英语状语从句知识点总结
⾼中英语状语从句知识点总结语从句内容⽐较庞杂，同学们需要将其归类学习，形成体系。
今天，⼩编为⼤家整理了⾼中英语状语从句知识点总结，希望可以帮助⼤家⾼考英语听⼒答案规律及应考技巧⾼考英语完形填空蒙题技巧⾼考英语语法填空固定规律及做题技巧⾼考英语完形填空解题技巧汇总什么是状语从句状语从句（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。
状语从句考点分析：1. 状语从句虽然有完整的主谓结构，却是不能独⽴的从句。
2. 状语从句它由从属连词引导成为整个句⼦⼀个不可缺少的部分。
3. 考查的热点有条件、时间、地点、让步等状语从句的连接词词义辨析.4. 动词的时态呼应、状语从句的省略等。
5. 题⼲结构呈交叉和综合特征，选项设计多从定语从句和名词性从句的⾓度进⾏思维⼲扰。
状语从句时态特点⼀般情况下，时间和条件状语从句的谓语动词⼀般⽤“⼀般现在时”表⽰“⼀般将来时”，⽤“现在完成时”表⽰“将来完成时”。
例如：I will call you as soon as I arrive in Beijing. 我到北京就将给你打电话。
（这是由as soon as引导的时间状语从句，从句中的谓语动词arrive是⼀般现在时，表⽰⼀般将来时，绝不可⽤will arrive）As soon as I have finished this work, I will have gone home. 我⼀完成此⼯作，就回家。
（从句中的谓语动词⽤现在完成时have finished，表⽰将来完成时,绝不可⽤will have finished）If he comes back, please let me know.如果他回来了，请通知我。
高中英语状语从句讲解及练习精编版
高中英语状语从句讲解及练习公司内部编号：（GOOD-TMMT-MMUT-UUPTY-UUYY-DTTI-状语从句状语从句在句中作状语，可分为：时间、条件、让步、原因、目的、结果、比较、地点、方式状语从句。
一、时间状语从句引导时间状语从句的连词有：when, as, while, until, not…until, before, after, since, the minute, the moment, each( every, next, the first) time等。
时间状语从句中一般用一般现在时或一般过去时。
1．When , while, as都可解释为“当```的时候”但侧重点有所不同。
1)WhenEg: When I arrived home , I had a little rest.注意点：when 从句的主语与主句主语相同，谓语动词是be 动词时，从句主语和be可以省略。
Eg: When (she was) walking along the street, she met her class teacher.2)AsAs 除了表示“当```的时候”，还可表示为“一面```一面”，“随着”Eg: He sang as he danced.(一面```一面)You will grow wiser as you grow older.(随着)3)While表示“当```的时候”强调主句的动作和从句的动作同时发生，从句一般用进行时，从句动词必须是延续性动词。
Eg: While we were working, they were having a rest.While (they were) having a discussion, they got very confused.注意点：while 有对比的含义，解释为“然而”。
eg: I prefer black tee, while he likes coffee.2．until, not…until表示“直到```才”,在肯定句中主句常用延续性动词；在否定句中主句常用短暂性动词。
(上海通用版)2022年新高一英语暑假精品讲义-第12讲：九种状语从句整合复习+题型综合练(教师版)
★ 九种状语从句（时间、条件、原因、地点、目的、结果、方式、让步、比较）种类连接词注意点时间状语when, whenever, while, as, before, after, till, not.. until,as soon as, evry time, ech time, by the time, once（一旦）hardly…when, no sooner…than,the moment/the minute/ immediately/directly/instantly主句表示将来意义时，从句须用一般现在时；while引导的从句中动词一般是延续性的；until用在肯定句中主句动词是延续性的，而否定句中主句动词为短暂性的。
地点状语where, wherever目录内容语法精选九种状语从句整合复习题型组合练语法填空词汇填空完形填空+记叙文阅读+应用文阅读核心词汇积累词汇背诵要点梳理内容导航第十二讲：九种状语从句整合复习+题型综合练注意比较:Whatever (=No matter what) you say, I’ll never change my mind. Whoever(≠No matter who)comes to the party will receive a gift.精讲精炼★ 填写适当的连接词，幷写出属于何种状语从句1. I didn’t realize how special my mother was __________ I became an adult.2. It took what seemed to be years __________ the actress finally turned up, which made the journalists as well as audiences disappointed and angry.3. ______ you are going to kill the snake, you have to get close to where the head is and cut it off.4. _______ _____ you have signed the contract with them，there is no point in discussing the price.5. Any measure of an ad’s performance is entirely pointless ______ it could be viewed by a person.6.You will certainly succeed _______ _______ _________ you keep on trying.7.Provide your doctor with a detailed medical history ____ ____ he can give you accurate treatment.8. As we can see, developing a good habit is so important ______ I would like to introduce one kind of good learning habit—keep a learning diary every day.9.My daughter stared at me，angrily，______ _______ I were her wicked stepmother.10. The classical book is still worth it_______ _______ it doesn’t sell well.11. Poor _______his English was, Mr. Li made himself understood in England.12. Someone called me up at midnight, but they hung up _____ I could answer the phone.13. He hurried out of the room ______ ______ ________ the meeting was over.14. _______ ________ ________ busy you are, you can fit self-care into your schedule.15. ____________ online shopping has changed our life，not all of its effects have been positive.16. __________ the damage is done，it will take many years for the farmland to recover.17. _______ ________ ________ he comes back next year, the stadium will have been built .18. He thinks that students have signed up for minor subjects ________ they have the energy and time to do so.19. ______ wealthy he was, he never forgot his humble beginnings and was always ready to help others.20.We'd better leave a message at the information desk _______ _______ somebody should come and visit us.1. until2. before3.If4. Now that5. unless6. as long as7. so that8. that9. as if/though10. even if/though 11. as 12.before 13. as soon as 14. No matter how 15. While/Although16. if/Once 17. By the time 18. because 19. However 20. in case★ 用适当的从属连词\关系词填空Gandhi was honored as the father of the Indian nation.He has been respected and beloved by the Indians with the belief __1__ he is an Indian national hero.He was born in India in 1869. __2__ is recorded，he got married at the age of 13，following the local custom. In 1888 he sailed to England，__3__ he studied law for three years and became a lawyer. __4__ _______ ________ he returned to India，he was sent to South Africa to work on a law case.In South Afrrica he was surprised to find __5__ the problem of racial discrimination was serious.There he formed an organization and this was __6__ he started to fight for equal rights.Gandhi returned to India in 1915，__7__ India was controlled by the British.He led the Indians to fight for an end to the British rule and independence for his country.__8__ in the political movement many Indians including Gandhi were put in prison and it was still not sure __9__ they could gain independence，the struggles never stopped.The British government had to give in and India won its independence in 1947.Unfortunately Gandhi was shot by an Indian __10__ opposed his views and died on January 30th,1948.1.that2. As3. where4. As soon as5. that6. why7.when8. Although9. whether 10. who★【强化练习】用状语从句翻译补全下列句子1．今天下午我没空，因为我和牙医有约。
初高中英语衔接课程讲义：状语从句
初高中英语衔接课程讲义：状语从句专题九：状语从句的考点集汇，讲解和训练定义：用来充当状语的句子称为状语从句。
功能：它主要用于修饰句子中的谓语动词、形容词或副词等，有时修饰整个句子。
位置：状语从句的位置较活：可以放在主句之前，用逗号与主句隔开；也可以放在主句之后，一般不用逗号。
由于它是从各个方面来修饰、说明谓语动词发生时的各种情况，所以常见的状语从句有九种之多。
各种不同的状语从句所使用的关系词也各不相同。
一、时间状语从句引导时间状语从句的从属连词有很多，现将分类用法如下：1.从属连词when，while 与as连词用法谓语动词意义例句whe n从句的动作和主句的动作可以同时发生，也可以先后发生。
可以指时间的某个点，也指一段时间。
延续性动词非延续性动词当……时候When they heard thenews，they all jumpedwith joy.I owed Jack $ 100when I was in London.as 从句的动作与主句的动作同时发生。
可以指时间的某个点，也指一段时间。
延续性动词非延续性动词随着……一边……；一边……当……时候The students sang asthey walked.As he stood up，hedropped the glass，breaking it into pieces.whil e从句的动作与主句的动作同时发生，强调一段时间。
从句中常用过去进行时态或一般过去时态。
延续性动词当……时候在……期间While I was reading，he came in.I made some foreignfriends while I was inLondon.注：1)when还可作并列连词，其意义为“那时，这时”，相当于and at this/that time。
常用于下列句式：sb.was doing sth.when...某人正在干某事就在这时……sb.was about to/ going to do sth.when...某人正打算干某事就在这时……sb.body has just done somesth.when...某人刚干了某事就在这时……2)when还表示原因“既然”。
(完整)高中英语状语从句知识点及练习,推荐文档
高中英语---状语从句一、概念：状语通常由副词、介词短语、动词不定式、分词和从句等担当。
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，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。
二、分类及使用1. 时间状语从句(1) when ①.when引导的时间状语从句，其动词既可以是延续性动作的动词，也可以是瞬间性动作的动词，可以表示主句的动作和从句的动作同时发生，或从句的动作发生在主句的动作之前。
when you apply for a job, you must present your credentials.② when还可表示just then（正在那时）的意思，此时所引导的从句放在主句之后。
we were about to start when it began to rain.(2) as引导的时间状语从句 as侧重表示主句和从句的动作并相发生,翻译成一边，一边。
We were having breakfast as she was combing her hair.(3) while “在…期间”，所引导的从句的动作是延续性的，并表示和主句的动作同时发生。
(4) before引导① before“在…之前” I’ll be back before you have left.② before“…之后才” It may be many years before we meet again.(5) as soon as/once/directly/the instant等引导as soon as 是最常见的表示“一…就”的从属连词，其他连词还有immediately，instantly，the instant (that)，the minute(that) ，the moment(that)等，它们通常都可与as soon as换用。
As soon as we got home, the telephone rang.I recognized her immediately I saw her.(6) hardly...when/no sooner...than引导关联从属连词hardly/barely/scarcely...when和no sooner...than的意思是“刚…就”，它们所引导的从句中的谓语动词通常为过去完成时。
高中英语语法_九大状语从句讲解大全(附练习和答案)
【高中语法·状语从句专辑】状语从句和名词性从句、定语从句一样是高考的高频考点。
通过对近年高考题的分析，可以预测2012年对状语从句的考查仍将集中在对引导几大状语从句的连词的考查上。
状语从句是一种作状语用的从句，修饰主句中的动词、形容词、副词或修饰全句，补充说明时间、地点、原因、条件、方式、程度、状态等。
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。
九种状语从句及常见的引导词1、【时间状语从句】：when, while, as, before, after, since（自从…以来）, till (until), as soon as(刚一…马上就…), once(一旦), whenever等。
特殊引导词：the minute, the moment, the second, every time, the day，the instant=instantly , immediately , directly, no sooner … than, hardly …when, scarcely … when (1) while 引导的时间从句的谓语必须是延续性动词，常用进行时态。
如果while表示“然而”的时候，就不是时间状语从句；表示“虽然”的时候，是让步状语从句，这是必须放句首且不能倒装。
(2) when 除了表示“当……时”（两个短暂性动作同时发生），还可以表示“就在那时”，在前一个动作刚结束时就发生的新动作。
如I just locked my door when the postman arrived.(3) as 和when一样，表示两个短暂性动作同时发生，还可表示“一边……一边……”“随着…”(4) 党表示“一……就……”的连接词时，可以用到no sooner … than, hardly …when, scarcely … when，但是当hardly, scarcely, no sooner放于句首时，主句必须部分倒装；主句时态用过去完成时，从句用一般过去式。
状语从句讲义-新高一上学期初升高英语衔接
初高中英语语法衔接材料第十二讲：状语从句Adverbial Clause定义：在句中起到副词的功能，修饰主句或主句中动词、形容词、副词的从句，叫做副词性从句。
按其在句⼦充当的成分划分，⼦称为状语从句。
状语从句的分类状语从句根据表达的意思，可分为9类：时间状语从句、地点状语从句、原因状语从句、结果状语从句、⼦的状语从句、让步状语从句、条件状语从句、⼦式状语从句和⼦较状语从句。
三个从属连词：放在从句前面特点语序：用陈述句语序位置：可位于主句前或后；位于主句前时，一般用逗号与主句隔开1.时间状语从句：when, as, while, after, before, since, once, until, till, as soon as,every time/each time, the moment, the minute, immediately, directly,instantly 等2.地点状语从句：where, wherever等状语 3.原因状语从句：because, since, as, now(that)等从句 4.让步状语从句: although, though, even if, even though, as(用于倒装句),whether...or, no matter what/ who/ how/ when (=whatever/ whoever/ 九种however/ whenever), while(一般置于句首)类型 5.条件状语从句: if, unless, so/as long as, on condition that, suppose/ supposing(that), providing/provided that 等6.结果状语从句: so that, so...that..., such...that.. 等7.目的状语从句:so that, in order that, for fear that, in case 等8.比较状语从句:as...as, not so/as...as, than 等9.方式状语从句：as, as if, as though1. 时间状语从句（Adverbial Clause of Time）常见从属连词: when, while, as当……时候，在……期间，随着……，whenever 无论何时，as soon as⼦……就……，until, till,直到……为⼦，not….until直到……才，before在……之前，after在……之后，since⼦从……以后，by the time到……的时候特殊从属连词（组）:immediately, directly, instantly, the moment, the instant, the minute, the second ⼦刻，⼦……就......hardly...when..., no sooner...than...,scarcely…when...刚刚……，就……once（⼦旦；⼦……就）each time, every time（每⼦次，每⼦次）（1）when，while，as，whenever引导的时间状语从句★when引导时间状语从句，表示“当……的时候”。
(完整word)高中英语状语从句讲解及练习.doc
状从句在复合句中作状，位置灵活。
状从句可分状从句，目的状从句，条件状从句，步状从句，地点状从句，原因状从句，方式状从句，果状从句。
（一）状从句1. when, as, whilea. when 表，从句既可以用延性，又可以用瞬。
Eg: When I get there I will call you.如果 when 引的状的主与主句的主相同，而从句的又是be ，那么从句中的主与be 可省。
Eg： When （ you are） in trouble, you can ask her for help.如果 when 引的状的主与主句的主相同，往往可以用“when+分”的形式代替状从。
Eg： When I came into the room(When coming into the room), I found the light was off.b.while 表，从句需用延性，或者主句的作生在从句的作行程中。
主句的通常是非延性。
Eg: He came in while I was reading a book.I met her while I was in school.c. as 表，与 when 相似，但重主从句作同在点或同段行。
同可表示主句的作随着从句的作的化而化。
Eg: He jumps as he sings.As the wind rose, the noise increased.2.before(在⋯⋯之前 )与 after（在⋯⋯之后）Eg：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"。
否定形式表达的意思是"直至某才做某事" 。
Eg: Wait till/untill I call you.等着直到我叫你。
She didn't arrive till/until 6 o'clock..她直到 6 点才到但是置于句首只可用untill.Until you told me, I had heard nothing of what happened.直到你告我以前，出了什么事我一点也不知道。
九年级状语从句知识点归纳总结
九年级状语从句知识点归纳总结状语从句是英语语法中的重要知识点之一，对于九年级学生来说，掌握状语从句的用法和常见结构是非常关键的。
本文将对九年级状语从句的知识进行归纳总结，帮助同学们更好地理解和运用。
一、状语从句的定义状语从句是从句的一种，用来修饰主句中的动词、形容词或副词，表示时间、原因、条件、目的、方式、结果等种类不同的状语关系。
二、时间状语从句时间状语从句用来表示一个动作或状态发生的时间点或时间段。
常见引导词有：when, while, before, after, as, since, until等。
例句：- We will have a picnic when the weather gets warmer.- He was reading a book while I was doing homework.- Before I go to bed, I always brush my teeth.三、原因状语从句原因状语从句用来表示主句中动作或状态发生的原因或理由。
常见引导词有：because, since, as, for等。
例句：- He couldn't come to the party because he was sick.- Since it is raining, we will stay at home.- I like studying English as it is fun.四、条件状语从句条件状语从句用来表示主句中动作或状态发生的条件。
常见引导词有：if, unless, provided that, as long as等。
例句：- If you work hard, you will succeed.- I will go to the park tomorrow unless it rains.- You can borrow my pencil as long as you give it back.五、目的状语从句目的状语从句用来表示主句中动作或状态的目的或意图。
（完整版）高中英语状语从句讲解及练习
（完整版）高中英语状语从句讲解及练习状语从句状语从句在句中作状语，可分为：时间、条件、让步、原因、目的、结果、比较、地点、方式状语从句。
一、时间状语从句引导时间状语从句的连词有：when, as, while, until, not?until, before, after, since,the minute, the moment, each( every, next, the first) time 等。
时间状语从句中一般用一般现在时或一般过去时。
1．When , while, as 都可解释为“当``` 的时候”但侧重点有所不同。
1)W henEg: When I arrived home , I had a little rest.注意点：when 从句的主语与主句主语相同，谓语动词是be 动词时，从句主语和be 可以省略。
Eg: When (she was) walking along the street, she met her class teacher.2)A sAs 除了表示“当``` 的时候”，还可表示为“一面```一面”，“随着” Eg: He sang as he danced一.（面```一面）You will grow wiser as you grow older.（随着）3）While 表示“当```的时候” 强调主句的动作和从句的动作同时发生，从句一般用进行时，从句动词必须是延续性动词。
Eg: While we were working, they were having a rest.While （they were）having a discussion, they got very confused.注意点：while 有对比的含义，解释为“然而” 。
eg: I prefer black tee,while he likes coffee. 2．until, not ?until 表示“直到```才” , 在肯定句中主句常用延续性动词；在否定句中主句常用短暂性动词。
高一英语初高中衔接专题九 状语从句的考点集汇 讲解和训练
专题九：状语从句的考点集汇，讲解和训练【名师点睛】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, a, whie, before, after, ince, ti, unti, a oon a等连词来引导。
例如：It wa raining hard when got to choo eterdaWhie he wa doing hi homewor, the teee bacHe won’t beieve it unti he ee it with hi own ee3在带有ti或unti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 oung man read ti the ight went outLet’ wait unti the rain toeDon’t get off unti the bu toe to choo becaue he wa iA it i raining, we ha not go the ooSince ou can’t anwer the quetion, I’ a omeone ee2becaue表示直接原因，语气最强。
Becaue引导的原因状语从句多放在主句之后。
回答由wh提出的问题，只能用becaue。
A和ince语气较弱，一般用来表示明显的原因。
由a和ince引导的原因状语从居多放在句首。
例如：------Wh aren’t going there------Becaue I don’t want toA he ha no car, he can’t get there eaiSince we have no mone, we can’t bu it3becaue和o不能同用在一个句子里。
初升高暑期英语初高衔接初三升高一新高一讲义第17讲 条件状语从句结果状语从句
1、上次课后巩固作业复习；2、互动探索以if …I will…来讲述一段自己曾经感到遗憾的经历知识名称：条件状语从句和结果状语从句【知识梳理1】条件状语从句(1) if引导的条件状语从句If引导条件状语从句。
翻译成“如果”3. You'll succeed in time you study hard.A. unlessB. as long asC. even ifD. even though4. The robber told him that he had better keep silent he wanted to get into trouble.A. ifB. unlessC. otherwiseD. whether5. I have made a promise anyone can tell me the secret, I'll give him a little present.A. that ifB. thatC. whenD. so long as6. Don't let her leave the department she is not ready to.A. ifB. thoughC. unlessD. till7. I wrote these words down I should forget.A. forB. soC. lestD. since8. We are sure to do the work well we don't lose heart.A. forB. so long asC. as ifD. since9. He would be punished he should make the same mistake again.A. unlessB. ifC. providedD. lest10.Anyone can borrow books from this library he keeps them clean and returns them in time.A. even ifB. unlessC. so thatD. as long asKeys:1-5 BCBBA 6-10 AC BBD2，提高题1， _______ you return those books to the library immediately, you will have to pay a fine.答案：Unless2，The parents did not allow their son to swim in the sea _______ he might have an accident some day.答案：. in case3，. It is a gripping story and one can't put it down one has finished reading it.答案：until,4，.They agreed to rent the house the roof should be repaired.答案. on condition that5，_____ environmental damage is done, it takes many years for the ecosystem（生态系统）to recover.答案：.Once6.只要你可以上网，任何难题几乎都可瞬间解决。
专题09 连词和状语从句 知识总结-高中英语辅导讲义
专题九连词和状语从句连词定义、功能及分类连词是一种虚词，它不能独立担任句子成分而只起连接词与词，短语与短语以及句与句的作用。
连词可分为并列连词和从属连词。
并列连词连接两个单词、词组、分句或句子；从属连词引导用以引导名词性从句（见专题08）或状语从句。
状语从句定义、功能及分类定义：在复合句中作状语的从句。
功能：在主从复合句中修饰主句中的动词，形容词或副词，或整个主句。
分类：按意义可分为时间、地点、原因、目的、结果、条件、方式、比较、让步等状语从句。
从句的位置放在句首，也可放在句末。
放在句首时，从句后面常用一个逗号；放在句末时，从句前一般不用逗号。
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、immediately、directly、no sooner…than（一……就……）、hardly…when（刚一……就……）、scarcely…when（几乎没有…的时候）注意：如果主句是一般将来时，从句只能用一般现在时表示将来意义。
但when引导名词性从句时，从句中要使用将来时。
1. when①when既可引导一个持续性动作，也可引导一个短暂性动作，可用于表示主句和从句动作同时发生或从句动作先于主句动作，有时还可表示从句动作后于主句，意为“当...时候”。
It was six o’clock when I got home.②when在“be about to do...when...”、“be doing...when...”、“had done...when...”、“be on one’s way...when...”、“be on the point of doing...when...”等结构中，作“那时突然”讲。
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专题九：状语从句的考点集汇，讲解和训练【名师点睛】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 when got to school yesterday.While he was doing his homework, the telephone rang.As he walked along 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.Let’s wait until the rain stops.We won’t start until Bob comes.Don’t get off until the bus stops.2. 条件状语从句(1)条件状语从句通常由if, unless引导。
例如：What shall we do if it snows tomorrow?Don’t leave the building unless I tell you to.(2)在条件状语从句里，谓语动词通常用现在时态表示将来的动作或状态。
例如：I’ll help you with your English if am free tomorrow.He wo n’t be late unless he is ill.(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。
例如：Hurry up, or you’ll be la te.=If you don’t hurry up, you’ll be late.Study hard and you will pass the exam.=If you study hard, you will pass the exam.3. 原因状语从句(1)原因状语从句通常由because, since, as引导。
例如：He didn’t come to school because he was ill.As it is raining, we shall not go the zoo.Since you can’t answer the question, I’ll ask someone else.(2)because表示直接原因，语气最强。
Because引导的原因状语从句多放在主句之后。
回答由why提出的问题，只能用because。
As和since语气较弱，一般用来表示明显的原因。
由as和since引导的原因状语从居多放在句首。
例如：------Why aren’t going there?------Because I don’t want to.As h e has no car, he can’t get there easily.Since we have no money, we can’t buy it.(3)because和so不能同用在一个句子里。
4. 结果状语从句(1)结果状语从句由so…that, such…that, so that引导。
例如：He is so poor that he can’t buy a bike for his son.She is such a good teacher that everybody likes her.My pencil fell under the desk, so that I couldn’t see it.(2)so…that语such...that可以互换。
例如：在由so...that引导的结果状语从句中，so是副词，与形容词连用。
其结构是: “...so + 形容词（副词）+ that + 从句”。
例如：He was so glad that he couldn’t say a word.The hall is so big that it can hold 2,000 people.Mother lives so far away that we hardly ever see her.在由such…that引导的结果状语从句中，such是形容词，它修饰的可以是单数或复数可数名词，也可以是不可数名词；名词前面可以带形容词，也可不带。
如果是单数可数名词，前面需加不定冠词a或an。
例如：It was such a hot day that nobody wanted to d o anything.He had such long arms that he could almost touch the ceiling.He made such rapid progress that he did very well in the mid-term.有时上述两种结构是可以互换的。
例如：It was such a wonderful film that all of us wanted to see it again.=The film was so wonderful that all of us wanted to see it again.It is such an important match that nobody wants to miss it.=The match is so important that nobody wants to miss it.(3)如果名词前由many, much, little, few等词修饰时，只能用so, 不用such。
例如：Soon there were so many deer that they ate up all the wild roses.He has so litt le time that he can’t go to the cinema with you.5. 比较状语从句比较状语从句通常由as…as, 比较级+ than…等连词引导。
例如：Tom runs faster than John does.This classroom is as big as that one.6. 目的状语从句(1)目的状语从句通常由so that, in order that引导。
例如：We started early so that we could catch the f irst train.He studies hard so that he could work better in the future.We used the computer in order that we might save time.(2)so that既可引导目的状语从句，又可引导结果状语从句。
区别这两种从句的办法有两个：1)目的状语从句里往往带有情态动词can, could, may, might 等。
2)从意思上看，目的状语从句往往表示的目的很明确。
例如：Speak clearly so that they may understand you. (目的状语从句)Jack is badly ill so that he has to rest. (结果状语从句)7. 让步状语从句(1)让步状语从句通常由although, though等连词引导。
例如：Though he is young, he knows a lot.Although I am tired, I must go on working.(2)although(though)不能用在同一个句子中。
例如：我们不能说：Though it was raining hard, but he still went out.应该说：Though it was raining hard, he still went out.或It was raining hard,but he still went out.8. 地点状语从句地点状语从句常常由where来引导。
例如：Go where you like.Where there is a will, there is a way.【演练】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 basket ball with us?---I think he will come if he ______ free tomorrow.A. comes; isB. comes; will beC. will come; isD. will come; will be3. In the zoo if a child _____ into the water and can’t swim, the dolphins may come up ______ him.A. will fall; to helpB. falls; to helpC. will fall; helpD. falls; helping4. I don’t reme mber ________ 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. comesB. comeC. will comeD. is coming6. 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. becaus e8. I’ll go swi mming with you if I ________ free tomorrow.A. will beB. shall beC. amD. was9. In the exam, 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 paly.A. be foreB. 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 m ark _______ you have anyquestions.A. whichB. thatC. whereD. though13. The teacher raised his v oice _______ 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【练习答案】1.A2.C3.B4.C5.A6.C7.D8.C9.C 10.A 11.B 12.C 13.B 14.A 15.C 16.B 17.A18.D 19.C 20.B。