必修二状语从句
一地点状语从句
地点状语从句通常由where, wherever 引导。
Where I live there are plenty of trees.我住的地方树很多。
Wherever I am I will be thinking of you. 不管我在哪里我都会想到你。
二. 方式状语从句
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：Always do to the others as you would be done by.你希望人家怎样待你，你就要怎样待人。As water is to fish, so air is to man.我们离不开空气，犹如鱼儿离不开水。
Just as we sweep our rooms, so we should sweep backward ideas from our minds.
正如打扫房屋一样，我们也要扫除我们头脑中落后的东西。
2）as if, as though
两者的意义和用法相同，引出的状语从句谓语多用虚拟语气，表示与事实相反，有时也用陈述语气，表示所说情况是事实或实现的可能性较大。汉译常作"仿佛……似的"，"好像……似的"，例如：
They completely ignore these facts as if (as though) they never existed.
他们完全忽略了这些事实，就仿佛它不存在似的。（与事实相反，谓语用虚拟语气。）
He looks as if (as though) he had been hit by lighting.
他那样子就像被雷击了似的。（与事实相反，谓语用虚拟语气。）
It looks as if the weather may pick up very soon.
看来天气很快就会好起来。（实现的可能性较大，谓语用陈述语气。）
说明：as if / as though也可以引导一个分词短语、不定式短语或无动词短语，例如：
He stared at me as if seeing me for first time.他目不转睛地看着我，就像第一次看见我似的。He cleared his throat as if to say something.他清了清嗓子，像要说什么似的。
The waves dashed on the rocks as if in anger.波涛冲击着岩石，好像很愤怒。
三. 原因状语从句
比较：because, since, as和for
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。
I didn't go, because I was afraid.
Since /As the weather is so bad, we have to delay our journey.
2）由because引导的从句如果放在句末，且前面有逗号，则可以用for来代替。但如果不是说明直接原因，而是多种情况加以推断，就只能用for。
He is absent today, because / for he is ill.
He must be ill, for he is absent today.
四. 目的状语从句
表示目的状语的从句可以由that, so that, in order that, lest, for fear that, in case等词引导，例如：
You must speak louder so that /in order that you can be heard by all.
He wrote the name down for fear that(lest) he should forget it.
Better take more clothes in case the weather is cold.
五. 结果状语从句
结果状语从句常由so… that 或such…that引导，掌握这两个句型，首先要了解so 和such 与其后的词的搭配规律。
比较：so和such
其规律由so与such的不同词性决定。such 是形容词，修饰名词或名词词组，so 是副词，只能修饰形容词或副词。so 还可与表示数量的形容词many, few, much, little连用，形成固定搭配。
so foolish such a fool
so nice a flower such a nice flower
so many / few flowers such nice flowers
so much / little money. such rapid progress
so many people such a lot of people
（so many 已成固定搭配，a lot of 虽相当于many，但 a lot of 为名词性的，只能用such 搭配。）
so…that与such…that之间的转换既为so与such之间的转换。
The boy is so young that he can't go to school.
He is such a young boy that he can't go to school
六条件状语从句
连接词主要有if, unless, as/so long as, on condition that 等。.
if 引导的条件句有真实条件句和非真实条件句两种。非真实条件句已在虚拟语气中阐述。
unless = if not.
Let's go out for a walk unless you are too tired.
If you are not too tied, let's go out for a walk.
典型例题
You will be late ___ you leave immediately.
A. unless
B. until
C. if
D. or
答案A。句意：除非你立即走，否则你就回迟到的。可转化为If you dong leave immediately, you will be late.B、D句意不对，or表转折，句子如为You leave immediately or you will be late.
七.让步状语从句
though, although
注意：当有though, although时，后面的从句不能有but，但是though 和yet可连用Although it's raining, they are still working in the field.虽然在下雨，但他们仍在地里干活。He is very old, but he still works very hard.虽然他很老，但仍然努力地工作。
Though the sore be healed, yet a scar may remain.伤口虽愈合，但伤疤留下了。（谚语）
典型例题
1）___she is young, she knows quite a lot.
A. When
B. However
C. Although
D. Unless
答案：C。意为虽然她很年轻，却知道许多。
2)as, though 引导的倒装句
as / though引导的让步从句必须表语或状语提前（形容词、副词、分词、实义动词提前）。
Child as /though he was, he knew what was the right thing to do.
= Though he was a small child, he knew what was the right thing to do.
注意：a.句首名词不能带任何冠词。
b.句首是实义动词，其他助动词放在主语后。如果实义动词有宾语和状语，随实义动词一起放在主语之前。
Try hard as he will, he never seems able to do the work satisfactorily.
= Though he tries hard, he never seems…虽然他尽了努力，但他的工作总做的不尽人意。
3)ever if, even though.即使
We'll make a trip even though the weather is bad.
4) whether…or-不管……都
Whether you believe it or not, it is true.
5)"no matter +疑问词" 或"疑问词+后缀ever"
No matter what happened, he would not mind.
Whatever happened, he would not mind.
替换：no matter what = whatever
no matter who = whoever
no matter when = whenever
no matter where = wherever
no matter which = whichever
no matter how = however
注意：no matter 不能引导主语从句和宾语从句。
（错）No matter what you say is of no use now.
（对）Whatever you say is of no use now.
你现在说什么也没用了。(Whatever you say是主语从句)
（错）Prisoners have to eat no matter what they're given,
（对）Prisoners have to eat whatever they're given.囚犯们只能给什么吃什么。
八时间状语从句
比较while, when, as
1）as, when 引导短暂性动作的动词。
Just as / Just when / When I stopped my car, a man came up to me.
2）当从句的动作发生于主句动作之前，只能用when 引导这个从句，不可用as 或while。
When you have finished your work, you may have a rest.
3）从句表示"随时间推移"连词能用as，不用when 或while。
As the day went on, the weather got worse.
日子一天天过去，天气越变越坏。
比较until和till
此两个连词意义相同。肯定形式表示的意思是"做某事直至某时"，动词必须是延续性的。否定形式表达的意思是"直至某时才做某事"。动词为延续性或非延续性都可以。正确使用这两个连词的关键之一就在于判断句中的动词该用肯定式还是否定式。
肯定句：
I slept until midnight. 我一直睡到半夜时醒了。
Wait till I call you.等着我叫你。
（在肯定句中可用before代替Let's get in the wheat before the sun sets.）
否定句：
She didn't arrive until 6 o'clock.
她直到6点才到。
Don't get off the bus until it has stopped.
公共汽车停稳后再下车。
I didn't manage to do it until you had explained how.直到你教我后，我才会做。
1)Until可用于句首，而till通常不用于句首。
Until you told me, I had heard nothing of what happened.
直到你告诉我以前，出了什么事我一点也不知道。
2)Until when 疑问句中，until要放在句首。
---Until when are you staying?你呆到什么时候？
--- Until next Monday.呆到下周一。
注意：否定句可用另外两种句式表示。
(1）Not until …在句首，主句用倒装。
Not until the early years of the 19th century did man know what heat is.
直到19 世纪初，人类才知道热能是什么。
Not until I began to work did I realize how much time I had wasted.
直到我开始工作，我才认识到了我已蹉跎了几多岁月。
(2)It is not until… that…
表示"一…就…"的结构
hardly/scarcely…when/before, no sooner…than和as soon as都可以表示"一…就…"的意思，例：
I had hardly / scarcely got home when it began to rain.
I had no sooner got home than it began to rain.
As soon as I got home, it began to rain.
注意：如果hardly, scarcely 或no sooner置于句首，句子必须用倒装结构：
Hardly / Scarcely had I got home when it began to rain.
No sooner had I got home than it began to rain.
高中英语状语从句讲解汇总
高中英语状语从句讲解汇总 原因从句 除了下面A2，A3中所示各种类型外，这两种从句均可由as或because来引导。但是用as引导原因从句较为稳妥（参见A）；用because引导结果／原因从句较为稳妥（参见B）。 A 原因从句 1 由as／because／since 引导的原因从句： We camped there as／because／since it was too dark to go on． 我们在那里露宿是因为天太黑，不能再继续往前走了。 As／Because／Since it was too dark to go on，we camped there． [ 因为天太黑不能再继续往前走，我们就在那儿露宿了。 2 in view of the fact that可用as／since／seeing that来表示，但不能用because： As／Since／Seeing that you are here，you may as well give me a hand． 既然你在这儿，你就帮我个忙吧。 As／Since／Seeing that Tom knows French，he’d better do the talking． 既然汤姆懂法语，最好让他来谈。 3 在as／since／seeing that意指以前共知的或共知的陈述时，可用if来代替： ~ As／Since／Seeing that／If you don’t like Bill，why did you invite him 既然／如果你不喜欢比尔，你为什么邀请了他 注意：if so的用法： —I hope Bill won’t come． —If so（＝If you hope he won’t come），why did you invite him —我希望比尔别来。 —如果这样（=如果你希望他不来），你为什么邀请了他 关于if＋so／not，参见第347节。 ~ B 结果从句由because或as引导： The fuse blew because we had overloaded the circuit． 保险丝烧断了，因为我们使线路超载了。 He was angry because we were late． 他生气是因为我们来晚了。 As it froze hard that night there was ice everywhere next day． 因为那天晚上冷得厉害，所以第二天到处都是冰。 ~ As the soup was very salty we were thirsty afterwards． 因为这汤很咸，后来我们渴得厉害。
必修二状语从句
一地点状语从句 地点状语从句通常由where, wherever 引导。 Where I live there are plenty of trees. 我住的地方树很多。 Wherever I am I will be thinking of you. 不管我在哪里我都会想到你。 二方式状语从句 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： Always do to the others as you would be done by. 你希望人家怎样待你，你就要怎样待人。 As water is to fish, so air is to man. 我们离不开空气，犹如鱼儿离不开水。Just as we sweep our rooms, so we should sweep backward ideas from our minds. 正如打扫房屋一样，我们也要扫除我们头脑中落后的东西。 2）as if, as though 两者的意义和用法相同，引出的状语从句谓语多用虚拟语气，表示与事实相反，有 时也用陈述语气，表示所说情况是事实或实现的可能性较大。汉译常作"仿佛……似的"，实用文档
"好像……似的"，例如： They completely ignore these facts as if (as though) they never existed. 他们完全忽略了这些事实，就仿佛它不存在似的。（与事实相反，谓语用虚拟语气。）He looks as if (as though) he had been hit by lighting. 他那样子就像被雷击了似的。（与事实相反，谓语用虚拟语气。） It looks as if the weather may pick up very soon. 看来天气很快就会好起来。（实现的可能性较大，谓语用陈述语气。） 说明：as if / as though也可以引导一个分词短语、不定式短语或无动词短语，例如： He stared at me as if seeing me for first time.他目不转睛地看着我，就像第一次看见我似的。 He cleared his throat as if to say something.他清了清嗓子，像要说什么似的。The waves dashed on the rocks as if in anger.波涛冲击着岩石，好像很愤怒。三. 原因状语从句 比较：because, since, as和for 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。 I didn't go, because I was afraid. 实用文档
整理后带答案状语从句2
状语从句2- 原因状从，目的状从, 条件状从，结果状从 I. 原因状语从句 1.because引导的原因状语从句一般放于主句之后，because表示直接原因，语气最强，最适合回答why引导的疑问句。 I do it because I like it. 我做这件事是因为我喜欢。 注意：“not ... because”结构中的not否定的是because引导的整个从句，例如：The country is not strong because it is large. 国强不在大。 2.since引导的原因状语从句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”)，较为正式，语气比because弱。 Since you are free today, you had better help me with my mathematics. 既然今天你休息，你最好帮我补习数学。 注意：seeing (that)，now (that)，considering (that)，in that这几个词汇与since引导的原因状语从句意思相近，都表示“既然”。 Seeing (that) he refused to help us, there’s no reason that we should now help him. 他既然曾经拒绝帮助我们，我们现在没有理由要来帮助他。 Now (that) you are grown up, you should not rely on your parents. 既然你长大了，就不应该依靠你的父母了。 Considering (that) everybody is here, let’s begin our discussion. 既然大家都到了，我们就开始讨论吧。 In that he is ill, he feels unable to do it. 因为有病，他觉得做不了那件事。 3.as 引导原因状语从句时表示附带说明的“双方已知的原因”，语气比since弱，较为正式，位置较为灵活(常放于主句之前)。 例如：As it is raining, you’d better take a taxi. 既然在下雨，你最好乘出租汽车。 As you are tired, you had better rest. 既然累了，你最好休息一下。 I went to bed early, as I was exhausted. 我睡得早，因为我筋疲力尽了。 4.for引导的原因状语从句并不说明主句行为发生的直接原因，只提供一些辅助性的补充说明，for引导的原因状语从句只能放于主句之后并且必须用逗号将其与主句隔开。 例如：He could not have seen me, for I was not there. 他不可能见过我，因为我不在那里。 ［考题1］____ you’ve got a chance, you might as well make full use of it. A. Now that B. After C. Although D. As soon as ［答案］A ［解析］主句与从句之间存在因果关系，且“you’ve got a chance”表示一个显而易见的原因，因此应选用表原因的now that。 ［考题2］He found it increasingly difficult to read, ____ his eyesight was beginning to fail. A. and B. for C. but D. or ［答案］B ［解析］“his eyesight was beginning to fail”是“he found it increasingly difficult to read”的原因，因此本题应选用可以表示原因的连词for引导原因状语从句。 ［考题3］A man cannot smile like a child, ____ a child smiles with his eyes, while a man smiles with his lips alone. A. so B. but C. and D. for
(完整版)英语状语从句汇总整理版
英语中的九大状语从句 状语从句在主从复合句中修饰主句中的动词、形容词或副词等，按意义可以分为时间、地点、原因、目的、结果、条件、方式、比较、让步等状语从句。 一．时间状语从句。 通常由从属连词when, whenever, as, while, before, after, as soon as, till, until, since, once (一旦), hardly……when…, no sooner…….than…; 等引导。例如： The cyclist started just as the lights changed to green. Whenever we met with difficulties , they cam to help us. He didn’t leave his office until he had finished the day’s work. 应注意的问题 1．在时间状语从句中，通常要用动词的一般现在时态表示一般将来时态，用一般过去时态表示过去将来时态。但when 引导一般疑问句或名词性从句时不受上述语法规则的限制，因此，应该加以区分。例如： When China will enter WTO depends on the bilateral (双边的)joint efforts. Once you understand the rules of the game, you’ll enjoy it. 2.when , while, as 的不同用法。一般说来，当主、从句的动作是同时发生的事，三者可以换用。when 既可以引导一个持续动作，也可以引导一个短暂动作，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；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，往往侧重主句和从句动作的对比；as 用于引导“在某行为的继续中发生某事”的“继续之行为”，所以多与过去进行时连用，翻译成“一边……一边……”或者表示动作的变化，翻译成“随着……”。 例如： I hope you’ll think of my words as/when/while you drive on the busy roads. When he realized it, the chance had been lost. When he came home, I was cooking dinner. I was fat when I was a child. He took a bath while I was preparing dinner. As I was walking down the street, an American asked me for the directions to the nearest station. He sang songs as he was taking a bath. As he gets older he gets more optimistic.
高中英语状语从句100题
状语从句暑假练习一 1.___ hard he tries, he never seems able to do the work successfully. A. Whatever B. However C. Whichever D. Whenever 2.We have to be patient. It will be some time ___ we get the full result. A. since B. that C. before D. after 3.She lied to us ___ she had to ___ a job. A. what; to get B. because; get C. because; in order get D. all; get 4.I was about to go out ___ the telephone rang. A. then B. when C. suddenly D. so 5.This equipment is so old ___ it can’t be used any more ___ some o f its parts are changed. A. as; unless B. that; unless C. that; if D. whether; or 6.I’ll tell you the result of the test ___ I know it. A. because B. the moment C. though D. for 7.You can’t go out to play ___ you finish your homework. A. if B. because C. unless D. when 8.I was late today ___ there was something wrong with my bike. A. since B. as long as C. because D. when 9.You can’t waste natural resources ___ you have much of them. A. as if B. even if C. when D. if 10.Please speak clearly ___ we can follow you. A. s o…that B. so C. so as to D. so that 11.___ you have made a decision, don’t change it frequently. A. Once B. Before C. While D. Even if 12.He used to tell children the story ___ he had had the experience. A. as though B. even if C. even though D. like 13.He came to help us ___ he had plenty of work to do. A. as B. while C. although D. whenever 14.___, he knows how to live and study. A. A child as he is B. As he is a child C. Child as he is D. Though he is child 15.We found people friendly ___ we went. A. to which B. in which C. wherever D. to where 16.___ the weather is fine, I’ll open all the windows. A. Now that B. Since that C. Because of D. For 17.It was ___ he couldn’t finish it by himself. A. so difficult a work as B. such a difficult work as C. so difficult work as D. such difficult work that 18.___ I know, this book will be used as a text book. A. So far as B. So far C. So long as D. As to 19.He had disappeared in the darkness ___ I saw who he was. A. before B. after C. till D. while 20.We’ll build a power station ___ water resour ces are plentiful. A. where B. in which C. which D. that 21.___ we don’t lose heart, we’ll find a way to overcome the difficulty.
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, 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。 1.表示“一···就···”的句型 1) as soon as/once As 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。（主句都用过去完成时，从句用一般过去时。） No sooner had he reached home than it began to rain. 他刚到家，天就开始下雨了。 Hardly/Scarcely had I entered the room when the phone rang. 我一进屋，电话就响了。 当no sooner, hardly, scarcely不放在句首时，主句不倒装，如： I had no sooner reached the bus stop than the bus started. 我刚到车站，车就开走了。 I had scarcely（hardly）entered the room when the phone rang. 4）the moment, the instant, the minute, the second The moment I saw him, I recognized him. 我一看见他，就认出了他。 We'll leave the minute you are ready. 你一准备好，我们就出发。 5)有些副词如：instantly, immediately, directly可用作连词，后接从句。 I left immediately the clock struck 5. 我刚走，钟就敲了五点。 2. when, while, as引导时间状语从句 1) when的用法 ①when既可指时间点，也可指时间段（即：从句动词可以是短暂的也可是延续的）；主从句动作可同时也可先后发生。
状语从句二(1)-高考英语语法讲解
1. The farmer watered the vegetables in the field _____ they might grow better. A. in case B. for fear that C. in order D. so that 2. If they don’t understand it the first time, go over it again _____ they do. A. when B. after C. since D. until 3. I won’t accept their offer, _____ favorable the conditions. A. how B. however C. no matter D. no matter however 4. _____ it happened to be a nice day, we decided to go to the beach. A. When B. Before C If D. Since 5. We were just about ready to leave _____ it started to snow. A. when B. before C. after D. since 6. I’ll keep his address _____ I need it. A. so that B. in order tha t C. in case D. when 7. Will you keep my place in the queue for me _____ I go and make a phone call? A. since B. while C. in case D. until 8. _____ I’m very much mistaken, that’s my watch you’re wearing! A. If B. Unless C. Since D. Because 9. The mother don’t let the boy touch the knife _____ he might cut himself. A. in order that B. so as that C. for fear D. that 10. The modern history of Italy dates from 1860, _____ the country became united. A. when B. if C. since D. until 11. We can’t move into the new flat _____ the other tenants have moved out. A. since B. when C. until D. as 12. When I met him last week, it was the first time we had seen each other _____ we were at school.
初中英语状语从句知识点总结
初中英语状语从句知识点总结（一） 用来修饰主句中的动词，形容词或副词等而充当状语的从句叫做状语从句。状语从句常用从属连词来引导，与主句连接起来。若置于句末，则前面不加逗号。根据意义和作用，状语从句可分为时间原因条件等几种。下面我们就来分析一下这几种状语从句。 1时间状语从句 时间状语从句常用从属连词when,after,until,as soon as,等来引导。 当主句是祈使句或谓语动词是一般将来时态或情态动词时，其时间状语从句中的谓语动词常用一般现在时态表示将来发生的动作或存在的状态。这就是我们常说的“主将从现”。 如：Please call me when you get there.当你到那时，请给我打个电话。 I will write to you as soon as I arrive in Beijing.我一到北京就给你写信。 <温馨提示>since引导时间状语从句表示“自从…以来”，从句中的动词一般表示动作的起点，用过去时;而主句的动作延续的情况则用一般现在时或现在完成时。常用的句型为： It has been/is+一段时间+since+过去时。 如：I has been/is three years since we met last time.自从我们上次见面，已经三年了。 2条件状语从句 引导条件状语从句的连词或词组有：if(如果),unless(除非),as long as(只要)等。如果主句是将来时，条件状语从句也用一般现在时来表示。 如：I will stay at home if it rains tomorrow.如果明天下雨，我就待在家。 You can’t learn English well unless you wo rk hard. 除非你努力学习，否则是学不好英语的。 <温馨提示>由if引导的条件状语从句，若从句表达的是与现在事实相反的事实，则常用虚拟语气，即用过去时态表示(如果涉及到be动词，一律都用were)。此时，主句则用过去将来时。
状语从句例句
状语从句 状语从句一般分为九大类 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 常见的从属连词有：(注意其汉语意义) when, while, as, before, after, since, until (till), once, as soon as, the moment, the minute, immediately, directly, each/every time, the first time, the last time, next time, by the time, whenever等。 如： When I got to the airport, the plane had already taken off. When I lived there, I used to go to the seaside on Sundays. （二）．条件状语从句 常见的从属连词有： if, unless, as/so long as , as/so far as, on condition that , in case(以防；万一) , the more…, the more…等。如： If it rains, you can call me. Don’t call me unless it rains. （三）．原因状语从句 常见的从属连词有：because, since, now that, as等。 如： Since everybody is here, let’s begin our meeting． It must have rained last night, for the ground is wet． （四）．让步状语从句 常见的从属连词有： though, although, as, even if / though, no matter wh-，wh-ever, whether…or…等。 如： However late he is, his family will wait for him to have dinner together.
状语从句2 条件状语从句
状语从句---条件状语从句 （1）if 和unless 引导的条件状语从句。if 表示正面的条件，意为“如果”；unless(=if---not )表示反面的条件，意为“除非，如果不”。Eg. ①If you had come a few minutes earlier, you would have met him. ②I may not come to see you recently unless I can complete the project ahead of time. (2)in case, on condition that, providing(that), provided(that), supposing (that), suppose(that )等词汇意思相近，意为“万一，假设，假如，在---条件下”。 ①In case there is a fire, what will we do first? ②Supposing/suppose(that)they refuse us, who else can we turn to for help? They agreed to lend us the car on condition that we returned it before the weekend. 典例 The company promised to give us a discount we pay in advance. A.even if B.as if C. so that D. provided that (3)as long as (=so long as )引导语气强烈的条件状语从句，意为“只要”。 Eg. I don't mind where you go, as long as you're back before midnight. (4)在“祈使句+and/or/or else/otherwise+陈述句”句型中，祈使句在意义上相当于条件状语从句。
初中英语语法状语从句-精华版
状语从句 状语从句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： When while as 的区别It was raining hard（rain hard 下大雨）when got to school yesterday. While he was doing his homework, the telephone rang. As he walked along（沿着走）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（熄灭）. Let’s wait until the rain stops. We won’t start until Bob comes. Don’t get off（从下来）until the bus stops. 【。固定组合里from morning till night，till/until是不能替换的，】 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 won’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 late. =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 （不得；不应该）go the zoo. Since you can’t answer the question, I’ll ask someone else.
高中英语状语从句讲解
高中状语从句讲解+练习 状语通常由副词、介词短语、动词不定式、分词和从句等担当。例如： 1. Naturally , our grandparents were pleased to get our phone call . (副词) 2. We worked hard , from sunrise to sunset . (介词状短语) 3. To help my disabled aunt , I spend an hour working in her house every day . (不定式) 4. Seen from a distance , the farmhouse looked deserted . (过去分词) 5. I know how to light a camp fire because I had done it before .（原因状语从句） 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，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, the instant, immediately , directly, every time, the day，no sooner …than, hardly …when, scarcely …when （1）Tell him I need to see him the minute he arrives. 他一到就告诉他我要见他。 （2）The children ran away from the orchard(果园) the moment they saw the guard. The moment he saw me, he ran away. 他一看见我，就跑了。 He said he’d call you the moment he got home. 他说他一到家就给你打电话 （3）The instant I saw him, I knew he was the man from the restaurant. （4）Immediately you begin to speak, he gives you his full attention.你只要一开始说话，他就全神贯注地听。 （5）My sister came directly she got my message. 我妹妹一收到我的信息就来了。 （6）Every time I listen to your advice, I get into trouble. （7）no sooner... than... ，"一...就..." ，引导时间状语从句,主句用过去完成时,"than"后面的从句用一般过去时.(从这里可以知道,no sooner后面是主句;than后面是从句) 例: I had no sooner reached home than it began to rain. 我一到家天就下起雨来 No sooner ...than...常放在句首,表示强调.这时主句要倒装. 例:No sooner had I reached home than it began to rain. （8）He had hardly sat down when the telephone rang.他刚坐下电话就响了。 He had scarcely sat down when there was a knock at the door. 他刚坐下就有人敲门 另外，如果把hardly放于句首，主句要用倒装结构。如： Hardly had I finished eating when he came in. 我刚吃完他就进来了。 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. She was standing exactly where you are standing now那时他就站在你现在站的地方。 Stay where you are.呆在原地别动。 Wherever you go, you should work hard. Sit anywhere you like 随便坐吧 3．原因状语从句
状语从句(二)
专题（十四）状语从句（2） (五)原因状语从句 原因状语从句可由because, as, since, now that, in that, considering (that)等词引导。 1．because 译作“因为”，表示直接原因，语气较强，能回答由why 提出的问句。 The old man asked Lucy to move to another chair _________ he wanted to sit next to his wife. 那位老人让露西换坐到另一把椅子上，因为他想挨着妻子坐。 2．as 译作“由于”，语气较轻，常表示显而易见的原因；since (既然), now that (既然), in that (因为)，表示双方都知道的原因，语气较弱。as, since 和now that 引导的从句多位于主句之前。 ________ you have got a job, you should learn to be independent of your parents. 既然你找到了一份工作，你应该学会独立不依靠父母。 (六)方式状语从句 引导方式状语从句的从属连词有as, as if, as though 等。方式状语从句应放在主句之后。其中as if 或as though 引导的从句常用虚拟语气，但如果从句中所陈述的情况很可能实现，也可用陈述语气。 ①The house was greatly damaged by the truck.We’d better leave things ______ they are until the police arrive. 卡车对这座房子造成了严重的损坏。我们最好保持原样直到警察到来。 ②The construction industry is no longer as depressed _______ it was. 建筑业不再像以往那样萧条了。 ③The old lady treats the boy _________ he _________ her own son. 这位老太太对待这个男孩就像他是她自己的儿子似的。 (七)结果状语从句 1．引导结果状语从句的从属连词有：so ...that ..., such ...that ...。在非正式语体中，由so ...that ..., such ...that ...引导的句子中的that 可以省略，注意其结构形式： ??? so ＋形容词/副词＋that 从句 so ＋形容词＋a/an ＋可数名词单数＋that 从句 so ＋many/much/few/little 少 ＋名词＋that 从句 ? ?? such ＋a/an ＋形容词＋可数名词单数＋that 从句such ＋形容词＋可数名词复数/不可数名词＋that 从句 ①He is _______ a learned person ________ we admire him very much. ＝ He is _______ learned a person ________ we admire him very much.