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中考语法专题复习1：状语从句一、时间状语从句表示时间的状语从句可由when, as, while, after, before, till (until), since, as soon as , by the time等引导。
1. when “当...... 时”，引导时间状语从句，表示主句的动作和从句的动作同时或先后发生。
从句可以用延续性动词，也可以用短暂性动词。
When I walked past, he was practising playing the piano.The baby stopped crying when he saw his mother.when也可以作并列连词，表示一个动作正在进行的时候，突然间发生了另外一件事。
We were talking happily, when the telephone rang.2. while引导的动作必须是持续性的，强调主句和从句的动作同时发生，侧重主句和从句动作的对比。
They rushed in while we were discussing an important problem.while也可以作并列连词，表示转折关系，意为“而”。
I like listening to music while my bother prefers to do sports.3.as引导时间状语从句，用来表示同时发生的两件或几件事情，可以是持续性动作也可以连接两个同时发生的短动作。
As I got up, I saw my breakfast lying on the table.As Millie walked past the bookshop, she suddenly thought of buying a TV guide.4. before“在......之前”，引导时间状语从句，表示主句的动作发生在从句的动作之前；Please close the window before you leave /leaving the room.He once was a cook before he went to college.5. after “在......之后”，引导时间状语从句，表示主句的动作发生在从句的动作之后。
9AU7让步、结果和目的状语从句第一部分：让步状语从句一、让步状语从句的定义定义：表示让步且作状语的从句是让步状语从句。
连接词：although/though二、让步状语从句的连接词详细讲解although/though引导让步状语从句。
although相当于though，意为“尽管；虽然”(1)although/though作连词时，意为“尽管，虽然”，用来引导让步状语从句，一般位于句首。
它所引导的从句不能与并列连词but, and, so等连用，但可以与yet, still等连用。
Although it was expensive, we still decided to buy it.Though we only stayed there for a few days, we had a good time.Although he lives alone, yet he is happy. = He lives alone, but he is happy.他虽然单独生活，但很愉快。
My car is very old, but I don't want to buy a new one.虽然我的汽车很旧，但我不想买一辆新的。
(2)though 可用于even though结构，although则不能。
Even though I fail, I'll keep on trying. 我纵然失败，仍会继续尝试下去。
【2020年栖霞】14. Life is like climbing a mountain. ______ you may feel tired, you will enjoy the beautiful view at the top of the mountainA. SinceB. UnlessC. Though D Because答案C【2020年一中】15. ______we have failed ten times, we will not give up.A. IfB.AsC. UntilD. Though答案D【2020年新城】16.I think the coffee beans are from Brazil ________ I am not completely sure .A.becauseB.sinceC.thoughD.still答案：C【2020年鼓楼】17.--- I enjoyed the play of the New Y ear’s Art Festival.--- Me too,_________one student forgot his words on the stage.A. becauseB. thoughC. whileD. unless答案B【2020年建邺】18.__________ she couldn’t see his face, she could tell by his voice that he was young.A. UnlessB. IfC. BecauseD. Though答案D第二部分：结果状语从句what相同，so与how相同。
牛津译林版9A Unit 4 Grammar 时间状语从句语法复习（一）before，after，when和while引导的时间状语从句时间状语从句是指在复合句中充当时间状语的句子。
我们可以用before，after，when和while引导时间状语从句，这些连词既可放在句首，也可放在句中。
一、before引导的时间状语从句before意为“在……之前”，表示主句动作发生在从句动作之前。
▶She worked in Shanghai before she came here.她来这儿之前在上海工作。
▶Close the windows before you leave the room, please.在你离开房间前，请关上窗。
二、after引导的时间状语从句after意为“在……之后”，表示主句动作发生在从句动作之后。
▶After you think it over, please let me know your decision.你仔细考虑以后，请告诉我你的决定。
▶I went to school after I finished my breakfast.我吃完早饭后去上学。
▶Will you be free after two o’clock?2点钟之后你有空吗?三、when引导的时间状语从句when意为“当……时”，表示主句动作发生的特定时间。
从句中的谓语动词可以是延续性动词，也可以是非延续性动词。
▶When I got home，my mother was cooking diner.当我到家的时候，我的妈妈正在做饭。
▶I often think of my grandpa when I see the picture.当我看见这张照片时，我常常想起我的爷爷。
，四、while引导的时间状语从句while意为“在……期间”，表示主句动作发生在从句动作进行的过程中。
▶You can go swimming while I’m having lunch.我吃午饭时你可以去游泳。
9AU5语法原因状语从句一、原因状语从句定义：表示原因且作状语成分的从句是原因状语从句。
分类：常见的原因状语连接词如下表所示二、原因状语连接词详细讲解1.because的用法1.1引导的原因状语从句，表示“因为”，表示动作发生的直接原因，语气很强。
I like listening to music because it makes me feel relaxed.I like painting because I like all the different colours.Tan Dun likes the sounds of nature because he thinks the best music comes from nature.1.2常用来回答why引导的疑问句。
例1：—Why do people think highly of Tan’s music?—Because he has created a new type of music——music without boundaries.2.since和as的用法since和as都表达“既然；由于；因为”，表示已知的、显然的理由，较为正式。
它们的语气逗比because弱。
Daniel decided to play the violin at the art festival since/as he is good at it.Since/As Kitty will dance at the song and dance show, she has to practise hard these days.三、难点1：because和so不同时使用。
2：Why和What...for的区分➢why就目的提问时等于what...for。
意思是为了什么what...for的问句的回答方式：1)To do sth,2)In order to do sth➢why就原因提问时就不能和what...for 通用了。
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。
9AU4语法时间状语从句一、时间状语从句概述定义：表示时间且作状语的从句是时间状语从句。
分类：常见的时间状语连接词如下表所示二、时间状语连接词详细讲解1.before; after; when; while; as1.1before在...之前；after在...之后。
强调动作的先后关系。
用法：before作为连词，后面加句子。
before可以作为介词，后面加名词或doing。
after 用法相同。
After he graduated, he was forced to play in another basketball league.Before I have breakfast, I go jogging every morning.We started to go out before 7 a.m.Linda went to bed after finishing her homework.练习：用after和before填空1.________ you cross the street, you must look to the right and then to the left in Hongkong.=_______ crossing the street, you must look to the right and then to the left in Hongkong.2.He remained there for about a year ______the NBA took notice of him.3.______ he graduated, he was forced to play in another basketball league.4._______I have breakfast, I go jogging every morning.5._______Yao Ming went to the USA, he learnt to speak English well.答案1.Beforee; Before 2.before 3.After 4.Before 5.After1.2when；while；as1.2.1.when、while和as的用法①when的用法➢引导某个时刻发生的事情When I met Peter, I was waiting at the bus stop.➢引导某段时间发生的事情When I was watching TV, I received a call from my uncle.②while用法：➢引出某个时间段发生的事情。
9AU6语法条件状语从句一、条件状语从句定义：表示条件且作状语成分的从句是条件状语从句。
分类：常见的条件状语连接词如下表所示二、条件状语连接词详细讲解1.I f引导的条件状语从句1、if 意为“如果；假如”，表示在某种条件下某事很可能发生。
if引导的条件状语从句可以位于主句之前或之后。
如果从句在前，从句和主句间要用逗号隔开。
If用法表格如下：小结：If引导的条件状语从句中，主句中的动词常用一般将来时，也可含有情态动词或是祈使句。
从句均用一般现在时。
【主将从现】2.if既可以引导条件状语从句，也可以引导宾语从句。
引导条件状语从句时，翻译为如果，其时态要遵循主将从现；而引导宾语从句时，翻译为是否，要视具体的情况选择。
I don’t know if it will rain tomorrow. If it rains tomorrow, we will not go on a picnic.3.条件状语从句中谓语动词的时态不可用将来时，只能用现在时态或过去时态表示将来时。
如：If it doesn't rain tomorrow ,we will go to the zoo.If I had enough money , I would buy a car.如果我有足够的钱，我将买辆车。
4.当条件状语从句的主语与主句一致且谓语动词为be动词时，从句中的主语和谓语可以一起省去。
例如：Don’t speak until told to.( 省you are)2.Unless引导的条件状语从句unless谈论只在某种特定情况下会发生的事情或为真的事实。
意为“除非，如果不，若不，除非在……的时候”，有些时候相当于if … not（unless=If… not）。
在unless引导的条件状语从句中,主句中的动词常用一般将来时，。
从句通常用一般现在时。
【主将从现】The situation will continue unless humans stop hunting them for their furs and bones.The situation will continue if humans do not stop hunting them for their fur and bones.Unless it rains tomorrow, we are going to play football in the park.If it doesn’t rain tomorrow, we are going to play football in the park.Unless引导的条件状语从句可以位于主句之前或之后Unless you try your best, you will not realize your dream.You will be late unless you leave right now.三、考点：1.1条件状语从句与介词短语之间的转换。
译林版中考英语中考英语总复习状语从句专题复习含答案解析一、初中英语状语从句1．We all know that we won't enjoy good health ______ we often exercise.A．though B．if C．when D．unless【答案】D【解析】【详解】句意：我们都知道如果我们不经常锻炼，我们将不会享有好的健康。
考查连词的用法。
A. though虽然，尽管；B. if如果；C. when当......的时候；D. unless除非，如果不。
根据句意：我们都知道如果我们不经常锻炼，我们将不会享有好的健康。
只有D项符合题意。
故选D。
【点睛】主将从现是指在时间状语从句和条件状语从句中，如果主句是一般将来时，从句用一般现在时替代一般将来时。
常见的有以下四种情况：一、条件状语从句的主句是一般将来时，那么从句常常用一般现在时如：When I grow up, I’ll be a nurse and look after patients我长大后要当一名护士，照顾病人二、如果主句是祈使句，那么从句通常要用一般现在时如：Don’t laugh at me when I make a mistake.我犯错误的时候不要笑话我。
三、如果主句是含有情态动词的一般现在时，根据需要从句多用一般现在时如：You should be quiet when you are in the reading room在阅览室时应保持安静四. 如果if的条件状语从句遇到变换间接和直接时 , 祈使句应用not to....如; She said not to close the window常见的时间状语从句的连词有：as soon as,when,while ,as,until等。
2．You won't succeed _____ you work hardA．if B．because C．unless D．so that【答案】C【解析】【详解】句意：你不会成功的，除非你努力工作。
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。
三、条件状语从句在句子中起条件状语作用的从句被称之为条件状语从句。
条件状语从句可以放在句首和句尾。
引导条件状语从句的连接词主要有if,unless等。
If you can help me out of trouble this time,I will promise you everything.这次你要是能帮我摆脱麻烦,我就答应你所有的事情。
If it rains tomorrow,we will not go to school.如果明天下雨,我们就不去上学。
Unless you give up that bad habit,I will not marry you.除非你改掉坏习惯,否则我不会跟你结婚。
四、比较状语从句带有比较结构的从句在句子中作状语被称之为比较状语从句。
用来引导比较状语从句的连接词主要有than,as..as,the same as,such...as,not so(as... as),not the same..as等。
I run much faster than you (run).我跑得比你快得多。
Your computer is not the same as mine.你的计算机和我的不一样。
No other men work as hard as his father(does).没有人像他父亲一样努力工作。
五、原因状语从句在句子中起原因状语作用的从句被称之为原因状语从句,原因状语从句放在句首和句尾。
用来引导原因状语从句的连接词主要有because,since,as（因为),for(因为)等。
She failed in the exam because she did not study hard.因为她不努力学习.所以考试不及格。
There must be no one in the room for the door is locked.屋里肯定没人,因为门锁着。
Since it is so easy, you can do it quickly.因为这很简单,你能做得很快。
As il is so easy,you can do it quickly.这很简单,你能做得很快。
I love her not because she is rich and beautiful,but because she is kind-hearted.我爱她并不是因为她富有、漂亮,而是因为她心地善良。
六、结果状语从句结果状语从句是表示事态结果的从句,通常主句是因,从句是结果。
用来引导绍果状语从句的连接词主要有:(s0) that,so..(that)(如此·····以至于),such../that)(如此······以至于)等。
She worked very hard, so that she became rich in a very short time.(她努力工作,很快就变富了。
He ran so fast that we couldn't keep up with him.他跑得这么快,我们都跟不上他。
They are such good children that we all love them.这些孩子真好,我们都很喜欢他们.七、目的状语从句在句子中起目的状语作用的从句被称之为日的状语从句。
用来引导日的状语从何的连核间主要有:(60) that(为了,以便),in order that,in case(以防,以免)He studies hard in order that he may find a good job after his graduation.他努力学习为了毕业后能找到一份好工作。
I shouted that they could hear me.我大喊是为了让他们能听到我。
You’d better take more clothes in case the weather is cold.你最好多带点衣服以防天气变冷。
so that 引导的状语从句既可以表示结果,也可表示目的,要注意俩者的区别。
She left early so that she got there on time.她离开得很早,结果按时到达了那里。
(表示结果)She left early so that she could get there on time.她离开得很早,以便能按时到达那里。
(表示目的)八、让步状语从句在句子中起让步状语作用的从句被称之为让步状语从句。
让步状语从句可放在主句前,也可放在主句后。
用来引导让步状语从句的连接词主要有though(虽然),although(虽然),even if (though)(即使)等。
Although he was only ten years old,he helped his mother do a lot of housework.尽管他只有10岁,但能帮助妈妈干很多家务活。
I’ll go running even if it's raining.即使正下着雨,我也要去跑步。
He still went to school yesterday even if (though) he had got a fever.尽管昨天他发高烧,但他仍然去上学。
习题1.Could you tell me__________?A.when you will call meB.when will you call meC.when you would call meD.when would you call me2.We will have a party next week.If it_______,we'll have to cancel it.A.will rainB.would rain3.My parents will be angry with me if I______to school late again.B.will comeC.are coming4.Mary said she wanted to be a lawyer when she_______.A.grow upB. will grow upC.would grow upD.grew up5.Do you know if she_________. If she_______,please call me.A.will come;comesB.will come;will comees;comeses;will come6.-I wonder if your sister will go to the party.-If your sister_______,so _________.A.does;does sheB.does;will mineC.will;will mineD.will;will I7.I haven't heard from Peter_________he went to America. won't be here_______I am asked.A. after9.He will not join us______he has many things to do.10.We found the money two years______he had gone away.11.We had no sooner got to the airport______the plane left. e12.He spoke slowly______all of us could understand him.A.such thatB.so thatC.in order toD.as for13.She danced________she went along.14.She did not begin to work________he left.15.They must be at home_______the light's on.B.since thenD.even if16.Please take an umbrella________it rains.A. because ofB.in caseC.since thenD. not until17.He shut the window with_____force that the glass broke.B. sucho18.I came_________you called.D. rapidly19.__________I arrived at the station,she had already left.A. By the timeB.Till the momentC.Long beforeD.Until later20._________you come,don't forget to give back the book.A.Every timeB.Each timest timeD.Next time句子的主要成分语法要点英语句子主要由主语、谓语、表语、宾语(直接宾语、间接宾语)、宾语补足语,定语和状语等组成。
