内容正文:
高中北师大版
【语法专版】
状语从句系统讲解
语法专版
【专题】状语从句系统讲解
北师大版高中英语语法全解
考频分析
北师大版高中句法中,状语从句是重点语法模块,考频占句法总量的25%左右,贯穿试卷所有核
心题型:单项选择3-4题、完形填空2-3题、语法填空1-2题、阅读理解(长难句理解关键)、书面
表达(复杂句式构建核心)。在语境逻辑类题目中,状语从句的连接词选择、主从句时态呼应及逻
辑关系辨析往往是解题关键。
考查内容
·从句类型识别:时间状语从句、条件状语从句、原因状语从句、让步状语从句、目的状语从句、结
果状语从句、比较状语从句、方式状语从句的引导词辨析与逻辑关系判断
◆引导词功能运用:when、while、.if、unless、because、though、although、so that、such.hat、as等
引导词的语法功能与语义匹配
。主从句时态呼应:时间/条件状语从句中”主将从现”等时态规则,以及不同语境下主从句时态的协
调一致
知识点一:状语从句的分类及引导词
1.时间状语从句(表示动作发生的时间)
1.常见引导词:when((当…时)、while(当…时,主句从句动作同时进行)、until(直到…)、as
s0onas(一…就)
2.例句:
·I was reading a book when the phone rang.(when引导,主句过去进行时,从句一般过去时)
·She will call you as soon as she arrives.(as soon as引导,主将从现)
2.条件状语从句(表示主句动作发生的条件)
1.常见引导词:if(如果)、unless(除非,如果不)、as long as(只要)
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2.例句:
·If it rains tomorrow,we will stay at home..(if引导,主将从现)
·You won't pass the exam unless you study hard.(unless引导,相当于if.not)
3.原因状语从句(表示主句动作发生的原因)
1.常见引导词:because(因为,语气最强)、since(既然,表已知原因)、as(由于,语气较弱)
2.例句:
·He didn't go to school because he was ill..(because引导,回答why提间)
·Since you are free today,let's go shopping.(since引导,表双方已知的原因)
4.让步状语从句(表示与主句内容相反的让步或转折)
1.常见引导词:though/although(虽然,尽管,不能与but连用)、even if(即使)、no matter how(无
论怎样)
2.例句:
。Though it was late,he still went on working.(though引导,主句用still/yet表转折)
。No matter how hard he tries,he can't solve the problem.(no matter how引导,后接形容词/副词)
5.目的状语从句(表示主句动作的目的)
1.常见引导词:so that(为了,以便,从句常含can/could/may/might)、in order that(为了,更正式)
2.例句:
·He studies hard so that he can enter a good university.(so that引导,表目的,从句含情态动词can)
·She spoke loudly in order that everyone could hear her.(in order that引导,表目的)
6.结果状语从句(表示主句动作产生的结果)
1.常见引导词:so.…that(如此…以至于,so后接形容词/副词)、such.that(如此…以至于,such
后接名词短语)
2.例句:
·He is so tall that he can reach the top shelf..(so+形容词+that)
●It was such a beautiful day that we went for a walk.(such+a/an+形容词+名词+that)
7.地点状语从句(表示主句动作发生的地点)
1.常见引导词:where(哪里)、wherever(无论哪里)
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2.例句:
·You can put the book where you like.(where引导,表具体地点)
·Wherever he goes,,he always takes a book with him.(wherever引导,表任何地点)
8.方式状语从句(表示主句动作的方式)
1.常见引导词:as(按照,像…一样)、as if/as though(好像,似乎)
2.例句:
●Do as I told you.(as引导,表”按照…方式)
●He talks as if he knew everything.(asif引导,从句用虚拟语气表假设)
知识点二:状语从句分类及用法
1.时间状语从句(引导词:when,while,.as,before,after,until/.till,since)
1.引导词区别:
。when(当…时,可接延续性/非延续性动词)
。whie(当…时,接延续性动词,主从句动作同时进行)
。as(一边…一边,强调伴随)
。before(在…之前)
●after(在…之后)
。until/ill(直到…,主句为肯定句时谓语用延续性动词)
。since(自从…,主句常用现在完成时)
2.例句:
。I was reading a book when the doorbell rang..(when接非延续性动词rang,”门铃响时我正在看书)
·While she was cooking,.I was doing my homework.(while接延续性动词cooking,主从句动作同
时进行)
·As he walked,.he sang.(as强调”一边走一边唱”的伴随状态)
·Finish your homework before you watch TV.(before表示'在看电视之前完成作业”)
●After she arrived home,she called her mother.(after表示'到家之后给妈妈打电话')
·I will wait here until/till you come back.(until表示,等到你回来为止”,wait是延续性动词)
。We have lived here since20l0.(since+-时间点,主句用现在完成时)
2.条件状语从句(引导词:if,unless,as long as)
1.引导词区别:
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。f(如果,引导真实条件句,”主将从现”)
●unless(除非,=if not)
。as long as(只要)
2.时态规则:主句用一般将来时/情态动词/祈使句,从句用一般现在时(主将从现)
3.例句:
·If it rains tomorrow,we will stay at home..(if引导条件句,主句将来时,从句现在时)
。You will fail the exam unless you study hard.(unless-=if not,”除非努力学习,否则会挂科)
·As long as you keep trying,you will succeed..(as long as表示'只要坚持尝试就会成功')
3.原因状语从句(引导词:because,since,as,for)
1.引导词区别:
·because(因为,语气最强,回答why提问)
●since(既然,表已知原因)
·as(由于,语气较弱)
·for(因为,表补充说明,放句末,前有逗号)
2.例句:
·He didn't go to school because he was ill.(回答why,”因为生病没上学)
·Since everyone is here,.let's start the meeting.(”既然大家都到了,开始开会吧”)
●As it was late,we decided to go home.(”由于天晚了,我们决定▣家')
。He must be at home,.for the light is on.(”他肯定在家,因为灯亮着”,for补充说明原因)
4.结果状语从句(引导词:so.that.,such.that..)
1.结构区别:
·so+形容词/副词+that从句
·s1ch+(a/an)十形容词+名词+that从句
2.例句:
。She is so kind that everyone likes her.(so+形容词kind+that从句,”她太善良了,所有人都喜欢
她”)
。He runs so fast that no one can catch him.(so+副词fast+that从句,”他跑得太快,没人能追上”)
。It is such a beautiful day that we want to go out..(such+at形容词beautiful+-名词day+that从句,”
天气这么好,我们想出去”)
·They are such interesting books that I read them twice.(such+形容词interesting+名词books+that
从句,”这些书太有趣了,我读了两遍”)
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5.目的状语从句(引导词:
so that, in order that)
1.结构特点:从句常含情态动词can/could/may/might 等, so that可放句中/句末, in order that较正式
2.例句:
·I study hard so that I can get good grades. (so that表目的, ”为了取得好成绩而努力学习”)
He got up early in order that he might catch the first bus.(in order that表目的, ”为了赶上早班车起
得很早”)
6.让步状语从句(引导词:though/although, even if/though, whatever, when-
ever)
1.引导词区别:
though/although(虽然, 不能与but连用)
。even if/though(即使)
。whatever (无论什么
·whenever (无论何时)
2.例句:
Though he is young, he knows a lot.(though引导让步, ”虽然年轻但懂得多”, 不能说Though..
Even if i trains, we will go hiking.(even if表示”即使下雨也要去徒步”)
Whatever you do, I will support you. (whatever 表示”无论你做什么, 我都支持你”)
Whenever you need help, just call me. (whenever表示”无论何时需要帮助, 打电话给我”)
7.比较状语从句(引导词:
1.结构区别:
as+形容词/副词原级+as(和……一样)
not as/so+
1
形容词/副词原级+as(不如……)
形容词/副词比较级+than(比……更)
2.例句:
She is as tall asher mother. (as.as同级比较, ”和妈妈一样高”)
This book is not as interesting as that one. (not as..as, ”这本书不如那本有趣”)
·He runs faster than his brother.(比较级faster+than, ”比哥哥跑得快”)
知识点三:状语从句的分类及用法
1.时间状语从句(中考核心)
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1.常用引导词及例句:
·when(当…时)→例句:I was reading when my mother came in
。while(当…期间,主从句动作同时进行)→例句:While she was cooking,I was doing homework.
●as(一边…一边,随着)一例句:As time goes by,.we grow older.
。until/till(直到…)→例句:He waited until the rain stopped.
●as soon as(一…就)→例句:I will call you as soon as I arrive.
2.条件状语从句(中考高频)
1.常用引导词及用法:
。if(如果,主句用将来时,从句用一般现在时)→例句:If it rains tomorrow,we will stay at home.
·unless(除非=if not)→例句:You won't pass the exam unless you study hard.
。as long as(只要)→例句:You can borrow the book as long as you retumn it on time.
3.原因状语从句(中考基础)
1.常用引导词及例句:
●because(因为,▣答why提问)→例句:He didn't go to school because he was ill.
·since(既然,表已知原因)一→例句:Since everyone is here,.let's start the meeting.
。as(由于,语气比because弱)→例句:As it was late,,we decided to take a taxi.
4.让步状语从句(中考易错)
1.常用引导词及例句:
。although/hough(虽然,不能与but连用)→例句:Although he is young,he knows a lot.
·even if/though(即使)→例句:Even if it snows,.we will go to school.
·no matter+疑问词(无论…)→例句:No matter how hard it is,I will try my best.
5.目的状语从句(中考常考)
1.常用引导词及例句:
。so that(为了,以便,常与can/could连用)→例句:I study hard so that I can get good grades.
◆in order that(为了,比so that更正式)→例句:He saved money in order that he could buy a new
bike.
6.结果状语从句(中考重点)
1.常用引导词及结构:
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。so…that(如此…以至于,so后接形容词/副词)→例句:She is so kind that everyone likes her.
●such…that(如此…以至于,such后接名词短语)→例句:It was such a hot day that we stayed
indoors.
考法精析
考法一:引导词辨析
核心:根据从句类型及语境,选择正确的状语从句引导词
真题1(语法填空):
She studies hardshe can enter a good university.
答案:so that
解析:从句'she can enter a good university”表示主句'studies hard'的目的,且从句含情态动词can,
应用目的状语从句引导词so that。.
真题2(完形填空):
-it was late,he still went on working.
A Though B Because C If D As soon as
答案:A
解析:”it was late”与'he still went on working”存在让步转折关系,意为”虽然很晚了,他仍然继续
工作”,应用让步状语从句引导词Though。
考法二:状语从句引导词与时态结合
核心:根据从句类型选择正确引导词,并结合时态规则确定动词形式
真题1(语法填空):
I will tell him the news as soon as he_(arrive)tomorrow.
答案:arrives
解析:as soon as引导时间状语从句,遵循”主将从现”原则,主句用将来时,从句用一般现在时表
将来;主语he为第三人称单数,arrive用三单形式arrives。
真题2(完形填空):
She talked about the film as if she it before.
A.sees B.saw C.has seen D.had seen
答案:D
解析:sif引导方式状语从句,表示与过去事实相反的假设,用过去完成时:see的过去完成时为
had seen。
考法三:状语从句引导词辨析及时态应用
核心:结合不同状语从句类型(时间、条件、结果等)辨析引导词,并掌握”主将从现”等时态规则
真题1(单项选择):
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We will go for a picnic if it tomorrow.
A.won't rain B.doesn't rain C.rained D.rain
答案:B
解析:f引导条件状语从句,需遵循”主将从现”原则,主句用一般将来时,从句用一般现在时,主
语it为第三人称单数,否定形式用doesn't rain。
真题2(语法填空):
She was-tired_she fell asleep immediately.(so/that)
答案:so that
解析:此处表示”如此疲惫以至于立刻睡着了”,符合结果状语从句'so+形容词+that”结构,tired为
形容词,故填so that。.
解题小妙招
引导词辨析妙招
从句类型先判断,目的结果看情态:
让步转折用though,时间条件要分清;
asif表假设,虚拟语气时态变。
状语从句时态妙招
时间条件主从现,主将从现是关键:
as soon as连接句,从句一般现在时:
while强调同时行,主从时态要呼应:
虚拟语气看时间,过去事实用had done。
状语从句省略妙招
让步状语可省略,主表一致剩adj:
though when if连接,主语一致可省略:
tired bored此类词,主动形式表被动。
综合运用妙招
引导时态和省略,三管齐下解难题:
pretend后接不定式,进行时态要牢记:
continue后接动名词,习惯用法记心里:
虚拟条件看时间,过去完成莫忘记。
真题演练
演练一:单项选择试题(共10题)
1.We will go for a picnic the weather is fine tomorrow.
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A Because B If C Though D Unless
2.she is young,she has already published three novels.
A When B As C Though D Since
3.He ran _fast_he won the 100-meter race easily.
A so;that B such;that C as;as D too;to
4.Please speak louder_everyone in the room can hear you.
A so that B so..that C such...that D even if
5.She looks_she hasn't slept for days.
A even if B as if C as long as D so that
6.-I was walking home,I met my old classmate.
A When B Unless C If D Though
7.You won't improve your English-you practice speaking every day.
A if B unless C as soon as D since
8.-hard he tries,he still can't solve this math problem.
A No matter what B No matter how C Even if D As if
9.They started early_they could catch the first train to Beijing
A so that B so...that C such...that D in order to
10.He talked about the ancient city-he had visited it himself.
A even if B as though C because D since
演练二:填空试题(共10题)
1.I will call you_I finish my homework.(as soon as)
2.it rains tomorrow,we will cancel the outdoor activity.(If)
3.He didn't go to schoolhe was seriously ill.(because)
4.-she is only five years old,she can play the piano very well.(Though)
5.They are saving money_they can buy a new house next year.(so that)
6.The movie was-boring-I fell asleep halfway.(so;that)
7.You can sit-you like in the classroom.(wherever)
8.he was tired,he continued working on the project.(Though)
9.-there is a will,there is a way.(Where)
10.She studies English every day_she can pass the final exam.(in order that)
演练三:语法填空试题(共10空)
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阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。
When I was in high school,my English teacher always told us,"Practice more-(1)you can improve your
language skills."I followed her advice and kept a diary every day.One day,she asked me to read my diary
in class._(2)I stood up,my hands started shaking.I was afraid of making mistakes,but she smiled at me
_(3)I would feel more confident.
After class,she said,"Your writing is good,but you need to practice speaking.-(4)you speak English
aloud every morning,you_(5)(make)great progress soon."I took her words seriously.Every morning,
_(6)(stand)in front of my bedroom window,I read English articles loudly.Even if it_(7)(rain)
heavily,I never stopped.
One year later,I participated in an English speech contest._(8)I was nervous,I remembered my teacher's
encouragement.I spoke clearly and fluently,(9)(use)the skills she had taught me.At last,I won the
first prize
Now I realize that(10)difficult something seems,as long as you keep trying,you will succeed.
参考答案
演练-:1.B2.C3.A4.A5B6.A7B8.B9.A10B
1.as soon as 2.If 3.because 4.Though 5.so that 6.so;that 7.wherever 8.Though 9.Where 10.in
order that
1.so that 2.When 3.so that 4.If 5.will make 6.standing 7.rained 8.Though 9.using 10.no matter
how
10