高一语法(时间状语和原因状语从句).
语法专题：状语从句(含练习和答案)
状语从句一、状语从句的定义状语从句（Adverbial Clause）是指句子用作状语时，起副词作用的句子。
状语从句可以修饰谓语、非谓语动词、定语、状语或整个句子。
状语从句根据其作用可分为：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。
二、状语从句常用引导词1. 时间状语从句as /while /whe n /un til /once /since / before; whe never, he first/last time,every/each time等。
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. 结果状语从句7. 方式状语从句where/wherever 等。
because/as/si nce/fo 等。
if/unl ess/as long as 等。
so that/i n order that/i n case等。
so...that/such...that/so tha等。
as/as if(though)等。
than/as …as/the more …the 等ore9. 让步状语从句although/no matter+.../eve n if/ whatever/ as尽管）等。
三、状语从句分析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 teleph one rang.As he walked along (沿着走)the lake, he sang happily.(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。
高中英语语法-状语从句 归纳总结
高中英语语法-状语从句归纳总结状语从句状语从句可以用不同的连接词来引导，如when、whenever、while、as、before、after、instantly、until、till、by the time、as soon as、hardly…when、no sooner…than、the moment、the minute、XXX等等。
需要注意的是，这些连接词的使用要根据具体情况而定。
时间状语从句时间状语从句可以用when、whenever、while、as、before、after、instantly、until、till、by the time、as soon as、hardly…when、no sooner…than、the moment、the minute、XXX等连接词来引导。
需要注意的是，as和when、while的用法有所不同，有些表示时间的名词短语只能用when引导，如the minute、the moment、every time、the first time等。
地点状语从句地点状语从句可以用where或XXX来引导。
其中，where 表示某一个地方，而XXX则表示任何一个地方。
原因状语从句原因状语从句可以用because、since、for、as、now that等连接词来引导。
需要注意的是，because语气最强，用来说明人所不知的原因，回答why提出的问题。
而as和since则用来说明显而易见的或已为人们所知的原因。
如果由because引导的从句放在句末并且前面有逗号，则可以用for来代替。
而now that则表示“既然”，需要注意它只能用于现在发生的情况，而since可以用于现在和过去。
条件状语从句条件状语从句可以用if、unless、once、in case、as long as、on n that等连接词来引导。
需要注意的是，多用一般时态，如果表示一般将来的情况，就用一般现在时，如果表示过去将来的情况，就用一般过去时。
高中易考知识点状语从句的种类和用法
高中易考知识点状语从句的种类和用法状语从句是汉语中一个重要的语法结构，它能够在句子中作为修饰成分，用来描述动作或状态的情况。
在高中的语文考试中，状语从句是一个常见的知识点。
本文将介绍高中易考的知识点——状语从句的种类和用法。
一、状语从句的概念与基本特点：状语从句是指在复合句中做状语的从句，它可以用来修饰动词、形容词、副词或整个句子。
状语从句通常由连词引导，与主句之间有一定的逻辑关系。
二、状语从句的种类：1. 时间状语从句：时间状语从句表示动作发生的时间，在句子中可以作时间状语，修饰主句的谓语动词。
常用的引导词有when, as, while, before, after, since 等。
例如：- I will call you when I arrive home.（当我到家的时候，我会给你打电话。
）- He became a teacher after he graduated from university.（他大学毕业后成为了一名教师。
）2. 地点状语从句：地点状语从句描述动作的地点，在句子中作地点状语，修饰主句的谓语动词。
常用的引导词有wherever, wherever, anywhere等。
例如：- She will follow you wherever you go.（无论你去哪里，她都会跟随你。
）- I can find happiness anywhere I am.（无论我在哪里，我都能找到快乐。
）3. 原因状语从句：原因状语从句描述动作的原因，在句子中作原因状语，修饰主句的谓语动词。
常用的引导词有because, since, as, for等。
例如：- I stayed at home because it was raining heavily.（因为下大雨，所以我呆在了家里。
）- Since you are tired, you should rest.（既然你累了，你应该休息一下。
高考英语状语从句知识点知识点复习
高考英语状语从句知识点知识点复习高考英语状语从句知识点复习状语从句是高考英语中的重要语法知识点之一，掌握好状语从句对于理解和运用英语语言有着至关重要的作用。
在这篇文章中，我们将对高考英语中常见的状语从句类型进行详细的复习。
一、时间状语从句时间状语从句表示时间关系，常用的引导词有 when（当时候）、while（在期间）、as（当时，一边一边）、before（在之前）、after （在之后）、since（自从）、until ／ till（直到）等。
When 引导的时间状语从句，表示一个动作发生时，另一个动作正在进行或刚刚完成。
例如：“I was doing my homework when my mother came back” （当我妈妈回来的时候，我正在做作业。
）While 引导的时间状语从句，强调主句动作和从句动作在同一时期内同时发生，且持续时间较长。
例如：“While I was reading, my sister was playing the piano” （我在读书的时候，我妹妹在弹钢琴。
）As 引导的时间状语从句，强调两个动作同时发生，或一个动作随着另一个动作的变化而变化。
例如：“As time goes by, we are growing older” （随着时间的流逝，我们渐渐变老了。
）Before 和 after 引导的时间状语从句，分别表示“在之前”和“在之后”。
例如：“Please turn off the light before you leave the room” （在你离开房间之前，请关灯。
）“I will call you after I finish my work” （我完成工作之后会给你打电话。
）Since 引导的时间状语从句，表示“自从以来”，主句通常用现在完成时，从句用一般过去时。
例如：“I have lived here since I was born”（自从我出生以来，我就住在这里。
高中英语语法总结-状语从句
状语从句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。
完整版)高中状语从句归纳
完整版)高中状语从句归纳状语从句是在句子中做状语的，包括时间、条件、让步、原因、目的、结果、比较、地点、方式状语从句。
时间状语从句可以由when、as、while、until、not…until、before、after、since、the minute、the moment、each (every。
next。
the first) time等引导。
在时间状语从句中，一般使用一般现在时或一般过去时来表达。
1.时间状语从句引导词当句子中有时间状语从句时，可以用when、as、while、until、not…until、before、after、since、the minute、the moment、each (every。
next。
the first) time等来引导。
这些引导词在句子中的使用有不同的侧重点和用法。
1.1 when当我们用when引导时间状语从句时，它的主语和主句的主语相同。
如果从句的谓语动词是be动词，那么从句的主语和be可以省略。
例如：When I arrived home。
I had a little rest.1.2 asas不仅可以表示“当。
的时候”，还可以表示“一面。
一面”和“随着”的意思。
例如：XXX（一面。
一面）You will XXX（随着）1.3 whileXXX表示“当。
的时候”，强调主句的动作和从句的动作同时发生。
从句一般使用进行时，动词必须是延续性动词。
例如：While we were working。
they were having a rest.While they were having a n。
they got very confused.注意：while也有对比的含义，可以解释为“然而”。
例如：XXX。
XXX.2.until和not。
untiluntil和not。
until都表示“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。
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（原因,目的,时间,地点）【精选】
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。
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1. when 引导的时间状语从句可以理解为“当……的时候”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.主句分句 连接词逻辑关系时态搭配 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※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。
As the Internet becomes more and more commercialized, it is in the interest of business to universalize access.公司很难在经济衰退的环境下保持自身的国际竞争力。
It is challenging that commercial organizations remain globally competitive, while the economics is receding.2. before, after 引导的时间状语从句before 可理解为在……之前，after 可理解为在……之后主从句时态可明显体现动作的先后顺序We should do everything for what we want before it is getting too late.He had never gambled before the casino sent him a coupon for 20 dollars worth of gambling.3. since ，until 引导的时间状语从句（1）since从句中的非延续性动词可以表示一个时间点。
高中状语从句讲解(经典打印版)
状语从句1. 时间状语从句(1) when引导的时间状语从句①when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.当你申请工作时，你必须递交你的有关证件。
（同时）when the students heard the teacher’s footsteps, they a ll adopted talking.当学生们听到老师的脚步声时，他们都停止了讲话。
（从句动作发生在前）② when还可表示just then（正在那时）的意思，此时其所引导的从句只放在主句之后。
we were about to start when it began to rain. 我们正要动身，突然天下起雨来。
The game had hardly/scarcely/barely begun when it started raining. 比赛刚刚开始就下起雨来。
(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. 她梳头时我们在吃早饭。
(3) while引导的时间状语从句while或“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。
When the teacher paraphrased the text in English, the students listened attentively and took notes. 当老师用英语解释课文时，学生们聚精会神地听并做着笔记。
I can learn while I work. 我可以边工作边学习。
高考英语语法必考考点(12)状语从句(含解析)
2019年高考英语语法必考考点（12）：状语从句含解析李仕才【考点解读】在复合句中，修饰主句或主句谓语的句子叫作状语从句。
状语从句可位于主句之前，也可位于主句之后。
状语从句可分为时间、地点、原因、结果、条件、方式、让步、比较和目的等九大类。
一、状语从句引导词列表从句类型从属连词时间状语从句as, after, before, once, since, till, until, when, whenever, while, as soon as地点状语从句where, wherever, anywhere, everywhere原因状语从句because, since, as, now (that), seeing that, considering that, in that 结果状语从句that, so that, so/such ...that ...目的状语从句so that, in order that, for fear that, in case, for the purpose that条件状语从句if, unless, as/so long as, on condition that, in case, provided that 比较状语从句than, as ...as, not so/as ...as方式状语从句as, as if/though, how让步状语从句though, although, even if/though, however, whatever, as, while【点睛】(1)上述有些连词除了能引导状语从句外，还可引导定语从句和名词性从句。
在使用的时候，要根据句子结构和句意来判别和区分不同的从句，正确使用引导词。
以where为例，试比较下列多种从句的区别。
You are to find it where you left it. (地点状语从句)Tell me the address where he lives. (定语从句，先行词为the address)I don’t know where he came from. (宾语从句)Where he has gone is not known yet. (主语从句)This place is where they once hid. (表语从句)(2)在两个分句间要有一个且只有一个连词，千万不能按汉语习惯。
高中英语状语从句用法解析(含练习和答案)
高中英语状语从句用法解析英语语法状语从句类型综述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:1．时间状语从句常用引导词：when, as, while, as soon as, while, 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 … whenI didn’t realize how special my mother was until I became an adult.While John was watching TV, his wife was cooking.The children ran away from the orchard(果园) the moment they saw the guard.No sooner had I arrived home than it began to rain.Every time I listen to your advice, I get into trouble.2．地点状语从句常用引导词：where特殊引导词：wherever, anywhere, everywhereGenerally, air will be heavily polluted where there are factories.Wherever you go, you should work hard.3．原因状语从句常用引导词：because, since, as, since特殊引导词：seeing that, now that, in that, considering that, given that, considering that, inasmuch as, insomuch asMy friends dislike me because I’m handsome and successful.Now that everybody has come, let’s begin our conference.The higher income tax is harmful in that it may discourage people from trying to earn more.Considering that he is no more than 12 years old, his height of 1.80 m is quite remarkable.4．目的状语从句常用引导词：so that, in order that特殊引导词：lest, in case, for fear that，in the hope that, for the purpose that, to the end thatThe boss asked the secretary to hurry up with the letters so that he could sign them.The teacher raised his voice on purpose that the students in the back could hear more clearly.5．结果状语从句常用引导词：so … that, so… that, such … that,特殊引导词：such that, to the degree that, to the extent that, to such a degree that,He got up so early that he caught the first bus.It’s such a good chance that we must not miss it.To such an degree was he excited that he couldn’t sleep last night.6．条件状语从句常用引导词：if, unless,特殊引导词：as/so long as, only if, providing/provided that, suppose that, in case that, on condition thatWe’ll start our project if the president agrees.You will certainly succeed so long as you keep on trying.Provided that there is no opposition, we shall hold the meeting here.7．让步状语从句常用引导词：though, although, even if, even though特殊引导词：as(用在让步状语从句中必须要倒装)，while ( 一般用在句首)，no matter …，in spite of the fact that, while, whatever, whoever, wherever, whenever, however, whicheverMu ch as I respect him, I can’t agree to his proposal.尽管我很尊敬他，我却不同意他的建议。
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。
高一语法(时间状语和原因状语从句)
III. as
i.e. 1) As they were picking tea, the girls were singing happily. (一 一 边...一边） 一边） 一边 2) She sang as she worked. (随着 随着) 随着
IV. before
i.e.
1) He made a list of what he wanted to buy before he went to the supermarket. He made a list of what he wanted to buy before going to the supermarket. 2) It won’t be long before he finishes his writing.
III. for
i.e. --- He must be ill, for he is absent today. --- Because he is absent today, he must be ill. --- He must be ill because he is absent today.
时间状语和原因状语从句
(2课时—3课时)
TEACHING AIMS
Aims: 1. To teach students different forms of adverbial clauses of time and reason 2. To compare and summarize those clauses
（一）时间状语从句
只表“时间段” 3.while只表“时间段”(=during the time that),从句中动 词只限于持续性动词，它有时含对照之意， 然而” 词只限于持续性动词，它有时含对照之意，表“然而” i.e.(1) He fell asleep while he was studying his grammar book. (2) I was reading while he was playing. 相似，但它侧重动作的同时性， 4. as用法与when相似，但它侧重动作的同时性，表“一 还表“随着” 边...一边...”，还表“随着” i.e.(1) They talked as they walked. (2) As time goes by, we get wiser.
高中语法 时间和原因状语从句
时间状语从句的用法：时间状语从句通常是由when, while, as来引导的。
as作从属连词引导时间状语从句时，强调从句和主句的动作同时发生或进行。
When引导时间状语从句，从句的动作可和主句的动词同时发生或进行，也可先于主句的动作。
当表示两个动作同时发生时，可与as, while 互换。
while引导时间状语从句，从句的动词多表示持续性动作或状态，强调主从句的动作同时发生。
as soon as可以引导表示“一……就……”。
The students took notes as they listened .As he grew older , he became less active .Don’t talk so loud while others are studying.I’ll tell him the news as soon as I see him.Grammar 2 原因状语从句的用法：1．because: 表直接原因或理由，用来回答why提出的问题，语气最强。
Why didn' t he come to school? Because he was ill.2．since: 对方已知的，无需加以说明，即成事实的理由。
Since a lot of people make mistakes in life, Mr Smith w anted to give John a Chance.3．as: 十分明显的原因，说明因果关系，语气较弱。
As Jane was the eldest, she looked after the others.4．for: 表因果关系时，可与because互换，但for前一定要有逗号，不可放在句首；充当并列连词时，表推理解释，附加理由。
The days are short, for it is December now.5．now that: 说明一种新情况，加以推论，因果关系最弱。
高一英语教案：必修一 状语从句专项讲解
高考英语状语从句专项讲解一、考点分析状语从句主要考点在语法填空、翻译和作文。
二、专题详解状语从句梳理知识点1：分类语从句可以分为以下九种：1、时间状语从句2、地点状语从句3、原因状语从句4、目的状语从句5、结果状语从句6、条件状语从句7、方式状语从句8、让步状语从句9、比较状语从句知识点2：具体用法1) 时间状语从句：as soon as Hardly/scarcely had…whenNo sooner had …than….the moment.. the instant…the second…immediately directly…instantly…①As soon as I arrive in Shanghai, I’ll writeto you.我一到上海就给你写信。
② Hardly (scarcely) had I got homewhen it began to rain.我刚一到家就下雨了。
③No sooner had we got to the stationthan the train left.我们刚到车站，火车就走了。
④We had just begun the moment wewere told to stop.我们刚开始就被叫停。
⑤I felt cheerful immediately I heard thesong.我一听到这首歌就感到很愉快。
①hardly…when和nosooner…than的意义相当于as soon as，但只表示过去发生的事情，主句为过去完成时，从句为过去时，如hardly或no sooner位于句首时语气强，而且主句的谓语要用部分倒装。
②名词短语连词：“一……就……”主句+ the moment…从句主句+the instant…从句主句+the second…从句③ 副词短语连词：主句+ immediately +从句主句+ directly +从句主句+ instantly+从句every time =each time last time…next time…the first time ①Every time I traveled by boat, I gotseasick.我每次乘船都晕船。
状语从句(9种全)
状语从句在复合句中作状语的从句叫状语从句。
状语从句有时间、地点、原因、目的、结果、条件、方式、比较、让步等种类。
一、时间状语从句引导时间状语从句的连接词有: when, as, while, after, before, since, ever since, as soon as, once, till, until, whenever, no sooner…than, hardly/scarcely...when, themoment/minute/instant/second, every time, each time, any time, the first time, next time, last time, all the time, by the time, directly, immediately, instantly等。
1.表示“一···就···”的句型1) as soon as/onceAs soon as he arrives, I'll call you.他一到，我就给你打电话。
（as soon as 侧重时间或动作先后衔接紧，而once侧重条件，表示“一旦...”）2) on doing sth/on one's + n.作时间状语On arriving at the station, the thief was arrested.一到达车站，这个小偷就被逮捕了。
On his arrival in Paris, he was recognized as a noble and thrown into prison. 他一到达巴黎，就被认出是一个贵族，并被投入监狱。
3) no sooner ...than , hardly/scarcely...when它们表“一…就”。
结构中的否定词放在句首时，主句要倒装。
高中英语状语从句讲解及练习(含答案)
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。
状语从句(高一)
He will not join us unless he changes his mind. Don’t trouble trouble unless trouble troubles you.
*注: 主从句的动作发生在将来时，则主句用将来时,
从句用一般现在时。(主将从现） e.g: If he arrives tomorrow, I will be waiting for him at the airport.
5.目的状语从句
引导目的状语从句的主要连词有: so that, in order that
(so) that --- 以便, 从句中常常使用一些情态动词，如：
can, could, may, might, should等 e.g: Let’s take the front seats (so) that we may see more clearly.
6.让步状语从句
引导让步状语从句的连词有：Although, though
*注：不能与but连用
Although, though ---虽然 although 和though 可以互换，
但although 常放在句首。
e.g: Although it was raining, the plane managed to take off.
e.g: As he is honest and modest, all his friends like him.
Since ---既然 因语气较弱, 常译为既然
e.g: Since everybody has come, we can set off. Since the purser（事务长） didn’t tell us what to do,
时间和原因状语从句
TV.
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【考例】—Mum,____ shall we have lunch? —We
will have it when your dad_____. [连云港]
A ． when；returns
B ． where returns
C．where；will return D．when；will return
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一、时间状语从句
when 引导的时间状语从句中，可以用延续性动词， 也可以用短暂性动词。如：
I will visit my good friend when I arrive. 当我到达时，我将去看望我的好友。(短暂性动词)
Someone knocked at the door when I was sleeping. 当我正在睡觉时，有人敲门。(延续性动词)
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一、时间状语从句
在时间状语从句中，通常要用动词的一般 现在时态表示将来时，用一般过去时表示过去 将来式。
时间状语从句常用连词有： 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。
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六、条件状语从句
if 意为“如果”，引导一般条件状语从句时，主句 用将来时，从句用一般现在时。如： If it doesn't rain tomorrow, we will go there by bike. 如果明天不下雨，我们就骑自行车去那里。 If I get there early, I can see the doctor quickly. 如果我早早地到那里，我就可以快点看病。