原因状语从句和目的状语从句

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原因状语从句

原因状语从句Company number：【WTUT-WT88Y-W8BBGB-BWYTT-19998】二、原因状语从句：1、定义：在句中用来说明主句原因的句子叫原因状语从句。

2、常用引导词: because(因为), as (由于), since (既然), now (that) (既然)3、时态：原因状语从句一般都是根据实际情况选用适当的时态。

通常是主过从过，主现从现。

4、because, since和as的区别：1) because引导的原因状语一般放于主句的后面，because从句位于句首时要用逗号分开，放在句末时，可不用逗号分开。

because表示直接原因，语气最强，最适合回答why引导的。

because of 也表示原因，但它后面不接从句, 只能接名词, 代词或动名词。

注意：because 和so 不可同时出现在一个句子里。

①I do it because I like it. = I like it so I do it.②We went by bus because it was cheaper. = It was cheaper so we went by bus.③ He can’t go to school because of his illness.2) since引导的原因状语一般放于主句之前表示已知的、显然的理由(通常被翻译成“既然”= now that )，较为正式，语气比because弱。

①Since you are free today, you had better help me with my mathematics.②Since you don't trust him, you should not employ him.③Now (that) you are grown up, you should not rely on your parents.3) as引导原因状语时表示附带说明的“双方已知的原因”，含有对比说明的意味，语气比since弱，较为正式，位置较为灵活(常放于主句之前)。

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。

初中英语语法三大从句总结,仅此一份,建议收藏!

在初中英语中，主要有三大从句，即宾语从句、定语从句、状语从句（包括时间、条件、结果、目的、原因、让步、地点、方式等）。

小编今天跟大家分享的就是这三个从句的主要语法点，赶快看起来吧！宾语从句一、定义在句子中起宾语作用的从句叫做宾语从句。

二、连接词that: I think that you can pass the exam.Whether/if: I don’t know what the word means.“Wh”: I don’t know what the word means.I don’t know where he found the book.只用whether的情况：1. 与or not连用：I don’t know whether it’s raining or not.2. 与动词不定式连用：He doesn’t know whether to accept the invitation.3. 连接词前有介词时：It depends on whether he is coming.三、时态1. 主句是一般现在时态，从句根据实际情况而定(各种时态均可)She wants to know what he has done for the exam.2.主句是一般过去时态，从句用相应的过去的时态。

1）She said that she was a student.2）She said that she would fly to Japan in a week.3）She said that she had finished her homework already.3. 如果宾语从句说的是客观真理、自然现象或事实时，这时宾语从句要用一般现在时态。

The teacher said that the earth goes round the sun.一、定义在复合句中修饰名词、代词的从句叫定语从句。

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。

2023年牛津译林版英语中考复习之状语从句以及句子成分讲义(1)

中考复习之状语从句以及句子成分状语从句语法要点在句子中起状语作用的从句叫做状语从句(也称副词性从句),它相当子副词或副词短语,修饰主句的动词、形容词、副词等。

状语从句一般可以分为时间状语从句、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、比较状语从句等。

一、时间状语从句在句子中起时间状语作用的从句被称之为时间状语从句。

时间状语从句可以放在句首、句中和句尾。

用于引导时间状语从句的连词主要有when,while,as,as soon as,before, after,since,once,till,until,whenever等。

I studied English when (while,as) I was young.我小时候就开始学英语。

I have learned many things since I left my hometown.离开家乡后,我学到了很多东西。

He wants to become famous after he publishes his works.他希望他的作品出版后能成名。

He didn't come into the room until I came back.直到我回来,他才进屋。

二、地点状语从句在句子中起地点状语作用的从句被称之为地点状语从句。

地点状语从句可以放在句首和句尾。

用于引导地点状语从句的连接词有where,wherever等。

Where there is a will,there is a way.有志者事竟成。

I will follow you wherever (anywhere,no matter where) you go.你到哪儿，我就跟到哪儿。

Wherever you go, you must remember that you are a Chinese.无论你到哪里,你都得记住你是一个中国人。

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)

原因、目的和结果状语从句

例如： A.Soon there were so many deer that they ate up all the wild roses.
B.He has so little time that he can’t go to the cinema with you.
(11) 如果主从句的主语相同，并且从句是否定的形式，可以用too...to...句型转化。 too+形容词/副词+to do
原因状语从句
原因状语从句：从句表示的是主句行为的原因。通常由because, since, as, for引导。
(1) because表示直接原因（听话人所不知的），语气最强，引导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。此外， because和so不能同用在一个句子里。
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)
用于目的状语从句，还有：
so as to…(肯定结构) eg. He got up early so as to catch the early train.
(4) for表示所说的理由是一种补充说明,for引导的从句一般不放在句子的开头。如: I decided to stop and have lunch, for I was feeling quite hungry.
Eg: 1. I was late for class yesterday _b_e_c_a_u_s_e there was
例如： He was so excited that he couldn't go to sleep that night. = He was too excited to go to sleep that night.

八种状语从句

八种状语从句状语从句在句中作状语，修饰主句中的动词、形容词和副词等。

按其作用和意义可分为时间、原因、目的、结果、条件、让步、方式、比较八种。

下面对这八种从句的要点加以总结。

一、各类状语从句的引导词及易混词的区别。

1. 时间状语从句1) 引导词（1）表示“当……时候”：when, while, as, whenever（2）表示“一……就……”：as soon as（3）其它：after, before, since, until, by the timeWhenever he comes, he brings a friend. 他每次来都带个朋友。

I want to see him as soon as he arrives. 他一来我就要见他。

I went to bed after I finished my homework. 我做完家庭作业之后才睡觉。

2) 易混引导词when, while, as 的区别when既可指“时间点”，与瞬时动词连用，也可指“时间段”，与延续性动词连用（这时可与while互换）。

如：When he came in, his mother was cooking. 他进来时，他妈妈正在烧饭。

When（While）we were at school, we went to the library every day. 我们在校求学时，每天都到图书馆去。

while 只表示时间段，因此while从句的谓语动词要用延续性动词。

Please don' t talk so loud while others are talking. 别人在工作时，切勿大声讲话。

as 与when 用法相似，但着重强调主句动作与从句动作同时发生，有“随着……”或“一边……一边……”之意。

She sang as she went along. 她边走边唱。

As you get older, you get more knowledge.随着年龄的增长，你获得的知识就越多。

状语从句——原因和目的状语从句-教案

一、复习预习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。

二、知识讲解知识点：【考查点1】原因状语从句是用来说明引起主句这个结果的原因的从句，在初中阶段引导原因状语从句的从属连词主要的有because, as, since,for，seeing (that), now (that), considering (that)，in that等：The woolly shrank because it was washed badly. 毛衣因洗得不得法而缩水。

I can’t get to sleep because of the noise outside. 由于外面声音嘈杂我睡不着。

Since [As] we’ve no money, we can’t buy it. 由于我们没钱，我们无法购买它。

Seeing that it’s raining, we’d better stay indoors. 既然外边在下雨，我们最好待在室内。

Now that you are here, you’d better stay. 你既然来了，最好还是留下吧(既来之，则安之)。

【注】除以上提到的大家比较熟悉的引导原因状语从句的从属连词外，when有时也可引导原因状语从句(when表示“既然”)I won’t tell you when you won’t listen. 既然你不想听，我就不告诉你了。

原因状语从句应注意的问题1、because , since , as , for,辨析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。

当原因是显而易见的或已为人们所知，就用as或since。

状语从句知识讲解和经典试题

状语从句知识讲解基本概念定义：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一、时间状语从句1．when, while和as1) when既可引导一个持续动作，也可引导一个短暂动作，可用于主句和从句动作同时发生或从句动作先于主句动作。

如：When I lived there, I used to go to the seashore on Sundays.When the film ended, the people went back.2）while引导的从句的谓语动词动作必须是持续的，侧重主句动作和从句动作相对比，同时while引导的从句一般用进行时。

如：While I was wondering at this, our schoolmaster took his place.3) as引导一个持续性动作，多用于主句和从句动作同时发生。

如：He hurried home, looking behind as he went.John sings as he works.4) when还可用作并列连词使用，其意义是“那时、这时”，相当于and this/that time.常用于下列句式：Somebody was doing someth ing when…Somebody was about to /going to do something/ on the point of doing sth. when…Somebody had just / hardly done something when…过去时此外when还表示原因“既然”。

原因,比较,条件,目的,让步状语从句

as 表示虽然的时候，要进行倒装；
Child as/though he is , he can live by himself.
eg：Although/though she works very hard ,she makes very little progress.
Hard as she works, she makes very little progress.
As long as it doesn't rain, we can play.
You can go out on condition that you wear an overcoat.
Modern cars are far tougher to steal, as their engine management computer won't allow them to start unless they receive a unique ID code beamed out by the ignition (点火) key.
He looks as if (as though) he had been hit by lighting.
（与事实相反，谓语用虚拟语气。）
It looks as if the weather may pick up very soon.
（实现的可能性较大，谓语用陈述语气。）
He is absent today, because / for he is ill.
He must be ill, for he is absent today.
now that ：既然；
in that :因为，通常只能放在句中，强调重要的，唯一的的原因；

高中英语语法：状语从句知识点

高中英语语法：状语从句知识点状语从句(adverbial clause)在句中作状语，可修饰主句中的动词、形容词和副词等。

状语从句由从属连词引导。

状语从句可放在句首或句末。

放在句首时，从句后面常用逗号；放在句末时，从句前面往往不用逗号。

状语从句根据它们的含义分为时间、地点、原因、目的、结果、方式、让步、条件、比较等九种。

一、时间状语从句1、while, when, whenever和as的用法比较（1）while常表示一段较长的时间或一个过程，强调主句的动词和从句的动词所表示的动作或状态是同时发生的。

它不能表示一时性或短暂的动作。

Don't talk so loud while( as) others are working.别人工作时，请勿大声说话。

（2）when引导的时间状语从句，可指时间的一点，也可以指一段时间，从句的谓语动词可用终止性动词，也可用持续性动词。

when引导的从句表示的具体的时间，从句的动作和主句的动作可以同时，也可以先于主句的动作。

Whenever指任何一个不具体的时间。

It was raining when we arrived. 我们到达时，天正下着雨。

（动作同时，指时间点）When you read the poem a second time, the meaning will become clearer to you.当你再读一遍这首诗，你就更清晰它的含意。

（动作有先后，指时间点，不能用while）Come whenever you like. 你爱什么时候来就什么时候来。

（3）as用as时主句和从句的动作往往同时发生，具有延伸意义，一般同延续性动词连用，有时可译作“一边…一边…”。

As time went on, his theory proved to be correct.随着时间的推移，他的理论被证明是正确的。

As（when）he finished the speech, the audience burst into applause.他讲话结束的时候，听众掌声雷动。

9大状语从句

9大状语从句用于增强语气和表达情感在英语语法中，状语从句是指用来修饰主句的复合句。

它可以起到修饰时间、地点、原因、条件、目的等各种作用。

状语从句的存在可以丰富语言表达，增强语气，表达情感而不单单是为了传达信息。

本文将探讨9种常见的状语从句，在日常写作和口语交流中的使用方法和意义。

1. 时间状语从句时间状语从句是用来描述主句和另一个时间点之间的关系。

常用的连接词有when, while, as, since, before, after, until等。

例如：- When I was young, I used to play the piano every day.- After I finish my work, I will go to the gym.时间状语从句可以用来强调时间关系，同时也可以让语言更加生动有趣。

另外，在写作和演讲中，恰当的使用时间状语从句可以帮助读者或听众更好地了解事件的发展情况。

2. 地点状语从句地点状语从句是用来描述主句和另一个地点之间的关系。

常见的连接词有where, wherever, anywhere等。

例如：- I will go wherever you go.- She looked everywhere for her missing cat.地点状语从句可以用来准确描述地点，增强表情。

尤其在描述旅游、故事或传记等方面，地点状语从句经常被使用.3. 原因状语从句原因状语从句是用来描述主句和某个原因之间的关系。

常见的连接词有because, since, as, for等。

例如：- Because it was raining, I stayed at home last night.- I don't like to eat fish, for I am allergic to it.原因状语从句可以强调某个事件的原因，增强语气。

通过使用原因状语从句，写作者或者说话人可以清晰地表达某个事情的原因，使文章更加步入事实，增强可信程度。

完整版)状语从句(9种全)

完整版)状语从句(9种全)状语从句在复合句中起到修饰主句的作用，分为时间、地点、原因、目的、结果、条件、方式、比较、让步等种类。

1.时间状语从句时间状语从句的连接词包括when。

as。

while。

after。

before。

since。

ever since。

as soon as。

once。

till。

until。

whenever。

no sooner…than。

hardly/scarcely。

when。

the moment/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。

例如，“一···就···”的句型可以用as soon as或once引导，其中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。

”；on doing sth/on one's + n.作时间状语，例如On arriving at the n。

the thief was arrested.意为“一到达车站，这个小偷就被逮捕了。

”2.地点状语从句地点状语从句的连接词包括where。

wherever。

anywhere。

everywhere等。

例如，I'll go wherever you go.意为“你去哪儿，我就跟你去哪儿。

”3.原因状语从句原因状语从句的连接词包括because。

since。

as。

now that。

seeing that。

considering that等。

例如，Since it's raining。

we'll stay indoors.意为“因为下雨，我们将待在室内。

状语从句(9种

要点：表示状语从句由连词if, unless (=if not) 引导。

1.If it doesn’t rain tomorrow, we will go hiking.要点：目的状语从句由连词that, so that, so…that , in order that 引导。

1.so that 以至, 以便I’ll run slowly so that you can catch up with me. (目的)我将慢慢跑以至你能赶上我。

I opened the window so that fresh air might come in. (目的)我把窗户打开以使新鲜空气可以进来。

2.in order that=so that:为了We shall let you know the details soon in order that you can/may make your arrangements.不久我们将会让你知道详情,以便你们能够做出安排。

(目的)3.despite prep. 不管, 尽管 = in spite of 不管要点: 表示让步的状语从句由连词 though, although引导.难点：lthough, although当虽然讲, 都不能和but连用.Although,(though)…but的格式是不对的.但是他们都可以同yet (still) 连用. 所以though (although)…yet(still)的格式是正确的.Wrong: Although he is rich but he is not happy.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，例如：1。

九种英语状语从句

状语从句的种类（九种）口诀：▪时地原因条状补，▪目比结果方让步，▪连词引导各不同；▪主句通常前面走，▪连词引导紧随后，▪从句若在主前头，▪主从之间有个逗。

用来修饰谓语动词、其它动词、定语、状语或整个句子的从句叫做状语从句。

状语从句可分为：1.时间状语从句；(adverbial clause of time)2.地点状语从句；(adverbial clause of place)3.原因状语从句；(adverbial clause of cause)4.条件状语从句；(adverbial clause of condition)5.目的状语从句；(adverbial clause of purpose)6.让步状语从句；(adverbial clause of concession)7.比较状语从句；(adverbial clause of comparison)8.方式状语从句；(adverbial clause of manner)9.结果状语从句。

(adverbial clause of result)§状语从句的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：1.时间状语从句；(adverbial clause of time)①由when, while, as引导的时间状语从句。

例如：When we got home, I find Tom.While my wife was reading the newspaper, I was watching TV.We always sing as we walk.我们总是边走边唱。

②由before和after引导的时间状语从句。

It will be four days before they come back. 他们要过四天才能回来。

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。

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。

英语语法：状语从句的多种种类介绍

【导语】状语从句修饰主句/主句的谓语。

⼀般有九⼤类：表⽰时间、地点、原因、⽬的、结果、条件、让步、⽐较和⽅式等。

®⽆忧考⽹整理了相关内容，快来看看吧！希望能帮助到你~更多相关讯息请关注®⽆忧考⽹！ 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 …when I 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, everywhere Generally, 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, for 特殊引导词:seeing that, now that, in that, considering that, given that, considering that, as much as, so much as My 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 that The 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 that We'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, whichever Much 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。

原因状语从句与目的状语从句的区别与用法详解

原因状语从句与目的状语从句的区别与用法详解状语从句是复合句的一个重要组成部分，它能够对主句的动作或状态进行补充说明，使得整个句子更加丰富和准确。

在状语从句中，原因状语从句和目的状语从句是两种常见的类型。

本文将详细介绍原因状语从句与目的状语从句的区别以及它们的具体用法。

一、原因状语从句的特点和用法原因状语从句表示主句的动作或状态发生的原因，它通常由关联词“因为”、“由于”、“既然”、“只要”、“只有”等引导，从句中的谓语动词常用表示原因的连词“所以”、“因此”、“由此”、“因而”等来表示结果。

以下是一些常见的原因状语从句的例子：1. 由于下雨，他没有来参加聚会。

2. 因为他高烧不退，所以他无法上学。

3. 只要你努力学习，你就能取得好成绩。

4. 既然你已经决定了，我们就支持你。

从以上例子可以看出，原因状语从句可以对主句动作的原因进行进一步解释，使得句意更加明确。

二、目的状语从句的特点和用法目的状语从句表示主句的动作或状态发生的目的或目标，它通常由关联词“为了”、“以便”、“以免”、“为此”等引导，从句中的谓语动词常用表示目的的连词“以便”、“以免”、“为了”、“所以”等来表示结果。

以下是一些常见的目的状语从句的例子：1. 为了保护环境，我们应该少开车。

2. 我要努力学习，以便考上理想的大学。

3. 他换工作是为了能够更好地发展自己的事业。

4. 为了不迟到，他每天都早早地起床。

从以上例子可以看出，目的状语从句可以对主句动作的目的或目标进行进一步解释，使得句意更加明确。

三、原因状语从句与目的状语从句的区别尽管原因状语从句和目的状语从句都是状语从句的一种，但它们在用法上有一些区别。

1. 语义区别：原因状语从句主要表示主句动作的原因，目的状语从句主要表示主句动作的目的或目标。

2. 关联词区别：原因状语从句常用的关联词有“因为”、“由于”等，而目的状语从句常用的关联词有“为了”、“以便”等。

3. 结果表示：原因状语从句中，谓语动词常用表示结果的连词是“所以”、“因此”等；而目的状语从句中，谓语动词常用表示结果的连词是“以便”、“以免”等。

原因、目的、结果状语从句精讲

例：
1) The teacher’s teaching was so interesting that all the students were very excited.
老师讲课非常有趣，学生们都感到很兴奋。
2) Jack studies so hard that he always makes progress.
刘先生由于初来乍到，因此在这儿没有太多的朋友。
since语气较弱。它所引导的从句一般放在主句之前，意为“既然”；就对方陈述的事实作为理由。
例：
1) Since Li Ming doesn’t know the answers to the problems, let’s ask Wang Lei to do it.
我把窗户打开以便新鲜空气可以进来。
3) We will tell you everything about it soon in order that you can prepare for that.
不久我们将会让你知道详情,以便你能够做准备。(目的)
三、结果状语从句通常由连词so…that, such…that引导。二者都表示“如此…以至于”之意。
我爷爷心地善良，大家都喜欢和他聊天。
2) It is so cold that I have to wear warm clothes.
(= It is such cold weather that I have to wear warm clothes.)
天气如此的冷，以至于我不得不穿上暖和的衣服。
杰克学习很是努力，结果他不断取得进步。
3) It’s such a nice day that all of us want to go camping.