主从复合句--状语从句
1 / 5 主从复合句--状语从句 状语从句：在复合句中作状语,其位置可以在主句前或主句后。状语从句可以分为时间、地点、原因、目的、结果、比较、让步、条件等几种。状语从句由从属连接词引导。
时间状语从句通常由when ,as ,while, after, before, since, as soon as ,since, till (until), while, whenever 等引导。时间状语从句一般放在句首或句尾,特别注意,时间状语从句不允许使用将来时,而应该用现在时替代。如： When you finish the work, you may go out to play with Sam. (你完成工作就可以出去和Jim一起玩了。) / I won’t leave until Mum comes back. (妈妈回来了我才会走。) 地点状语从句通常由 where, wherever等引导。如：Go back where you came from! (哪里来还滚到哪里去！) / I will never forget to catch the thief who stole my necklace wherever he may be. (我永远也不会忘记去抓住那个偷我项链的贼,无论他会在哪里。) 原因状语从句通常由because, since, as等引导,一般放在句首或句尾。如：He went abroad because his father had found a good university for him. (他出国了,因为他父亲给他找了一所好大学。) 目的状语从句通常由so that..., so...hat..., in order that... 等引导,往往放在句尾,从句中通常含有can / could / may / might等情态动词。如：He got up earlier so that he could catch the first train. (他起身更早为的是赶上第一班车。) 结果状语从句通常由 so that..., so...that... 等引导,放在句尾。结果状语从句一般表示已经发生的事情,故多为过去时态。如：He lost so many bikes that he decided never to buy a new one. (他丢了那么多辆自行车,他决定再也不买新车了。) 比较状语从句通常由as, than, as (so)...as等引导,一般省略从句的谓语部分,只剩下名词或代词(用主格或宾格均可)。如：Jane is much taller than I/me. (Jane比我高多了。) / I don’t have as many books as you (do). (我书没有你多) 让步状语从句通常由though (although), as, even if( even though), however, whatever等引导。如：Even if you pay the debt(债务) for me, I will not thank you because it has nothing to do with me. (即使你替我还了债我也不会感谢你,因为它与我毫无关系。) / He wears a T-shirt though it is very cold. (他穿了一件T恤衫,尽管天很冷。) 条件状语从句通常由if, unless, as long as等引导,条件状语从句一般放在句首或句尾,特别注意,时间状语从句不允许使用将来时,而应该用现在时替代。You will certainly fail in the coming final exams unless you work much harder. (即将来到的期末考试你肯定考不及格,除非你更用功。) / If it doesn’ t rain tomorrow, we shall go hiking. (如果明天不下雨我们就要去徒步旅行。)
[注意] 1、because与so；(al)though与but；if与so不可以同在一个句子中成对出现。 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。 2 / 5
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 when got to school yesterday. While he was doing his homework, the telephone rang. As he walked along 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. Let’s wait until the rain stops. We won’t start until Bob comes. Don’t get off until the bus stops. 比较while, when, as 1）as, when 引导短暂性动作的动词。例如： Just as / Just when / When I stopped my car, a man came up to me. 我一刹车，有一个人向我走来。 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。例如： When you have finished your work, you may have a rest. 赶完活后，你可以休息一下。 3）从句表示"随时间推移"连词能用as，不用when 或while。例如： 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。例如 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。 区别： 1）until可用于句首，而till通常不用于句首。例如： 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。例如： ---Until when are you staying? 你呆到什么时候？ 3 / 5
---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。例如： Not until the early years of the 19th century did man know what heat is. 直到19 世纪初，人类才知道热为何物。 Not until I began to work did I realize how much time I had wasted. 直到工作，才认识到我已蹉跎了几多岁月。 2）It is not until… that… 。例如： It was not until I began to work that I realized how much time I had wasted. 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 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。例如： I didn't go, because I was afraid. 我不去是因为我怕。 Since /As the weather is so bad, we have to delay our journey. 天气那么糟，旅行推迟了。 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。例如： He is absent today, because / for he is ill. 他今天缺席，因为他病了。 He must be ill, for he is absent today. 他一定病了，所以今天缺席。 (3)because和so不能同用在一个句子里。 4. 结果状语从句 (1)结果状语从句由so…that, such…that, so that引导。例如： He is so poor that he can’t buy a bike for his son. She is such a good teacher that everybody likes her. My pencil fell under the desk, so that I couldn’t see it. (2)so…that语such...that可以互换。例如： 在由so...that引导的结果状语从句中，so是副词，与形容词连用。其结构是: “...so + 形容词（副词）+ that + 从句”。例如： He was so glad that he couldn’t say a word. The hall is so big that it can hold 2,000 people. Mother lives so far away that we hardly ever see her. 在由such…that引导的结果状语从句中，such是形容词，它修饰的可以是单数或复数可数名词，也可以是不可数名词；名词前面可以带形容词，也可不带。如果是单数可数名词，前面需加不定冠词a或an。例如：
九年级英语主从复合句(名词性从句 +定语从句 +宾语从句 +状语从句 )
初中英语专题：主从复合句名词性从句 +定语从句 +宾语从句 +状语从句1．— Do you know if he ______ for tomorrow s meeting?—I'm not sure. If he ______ I'll call you as soon as possible.A．comes; comes B．will come; will come C．will come; comes全面解析：如果他来，我将尽可能快地给你打电话。
if如果，是否。
根据I'm not sure.我不确定，可知不知道是否他将来，tomorrow表明时态是一般将来时，结构是will+动词原形，所以用will come；第二个句子表示if 引导的条件状语从句，从句用一般现在时，主句用will+动词原形，if所在的句子是从句，主语是he，所以用comes，故选C。
2．—Can you tell me _________?—He is kind and generous. He always helps others.A．what your buddy is like B．what your buddy likesC．How your buddy looks like D．how your buddy likes全面解析：A.what your buddy is like你的好友是什么样；B.what your buddy likes你的好友喜欢什么；没有C、D 表达。
根据回答他善良和大方可知，上文询问是密友什么样的，故答案选A。
3．—I wonder if Tom ______ this afternoon.—Don't worry. I will tell you as soon as he ______.A．will come; came B．comes; will comeC．will come; comes D．comes; came全面解析：—不要担心。
高中英语状语从句课件
e.g. The moment he comes, I will tell him.
3) as soon as, immediately, directly, instantly 等也可引导状 语从句。表示“一……就……”。 4) a. hardly … when b. scarcely … when / before c. no sooner … than 都相当于as soon as，用以引导时 间状语从句。注意：当 hardly, scarcely及no sooner位于句首时, 从句中的主谓要倒装。
3. ______ the day went on, the weather got worse. A. With B. since C. As D. While 4. He was halfway through his meal ____ a familiar voice came to his ears. A. wh5. Hardly ______ into the village ______ it began to rain. A. we had got; when B. we got; than C. had we got; when D. did we get; than
3. ______ you have tried it, you can’t imagine how pleasant it is. A. Unless B. Because C. Although D. When 4. The official soon realized that, ______, things would get worse. • unless dealt with properly • if not properly dealing with it • unless properly dealt with • if dealt not properly with
主从复合句
思学文化艺术培训中心主从复合句简单介绍1. 主语从句: 在句子中担当主语的是一个从句，这个从句就叫做主语从句。
Who will be our monitor hasn't been decided yet.It hasn't been decided yet who will be our monitor.2. 表语从句: 说明主语是什么或者怎么样，由名词、形容词或相当于名词或形容词的词或短语充当，和连系动词一起构成谓语。
He has become what he wanted to be ten years ago.3. 宾语从句: 结构：主语+谓语+宾语（陈述句语序）He told us that they would help us through the whole work.4. 指句子用作状语时，起副词作用的句子。
1.时间状语从句Every time I listen to your advice, I get into trouble.2.地点状语从句Wherever you go, you should work hard.3.原因状语从句My friends dislike me because I'm handsome and successful.4.条件状语从句You will certainly succeed so long as you keep on trying.5.目的状语从句The boss asked him to hurry up so that he could catch the plane..6.让步状语从句The man always enjoys swimming even though the weatheris rough.7.比较状语从句She is as bad-tempered as her mother.8.方式状语从句When in Rome, do as the Roman do.9.结果状语从句He got up so early that he caught the first bus.。
状语从句-语法
状语从句状语从句即指在主从复合句用作状语的从句。
按照其意义，状语从句可分为时间状语从句、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、让步状语从句等。
时间状语从句■引导时间状语从句的从属连词引导时间状语从句的从属连词很多，如较基本的有before, after, when, while, as, since, till, until, as soon as 等：Things were different when I was a child. 我小时候情况与现在不同。
We must strike while the iron is hot. 我们要趁热打铁。
It’s a long time since I met you last. 从上次见到你，已有很长时间了。
He waited until she was about to leave. 他等着一直到她准备离开。
除以上基本的引导时间状语从句的从属连词外，还有些本来不是从属连词却可用作从属连词的词：(1)表示“一…就”的从属连词：the moment, the minute, the second, the instant, immediately, directly, instantly, once, no sooner…than, hardly…when等。
如：Immediately he came I told him the news. 他一来我就把消息告诉了他。
The moment I saw him I knew there was no hope. 我一看到他就知道没希望了。
We had no sooner set out than it began to rain. 我们刚出发就下雨了。
Once he arrives, we can start. 他一来我们就可以开始。
(2)涉及time的几个从属连词：every time(每次)，each time(每次)，(the) next time(下次)，any time(随时)，the last time(上次)，the first time(第一次)。
初中状语从句
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。
状语从句由从属连词引导，位于句首时，常与主句用逗号分开，位于句末时，其前一般不用逗号。
状语从句根据其用途可分为时间状语从句、原因状语从句、结果状语从句、条件状语从句、让步状语从句、方式状语从句、目的状语从句等。
1.时间状语从句从句的引导词例句When/while/as当....时；before在....之前；after在.....之后；since自从；until/till直到......为止；as soon as一.....就..... When I was doing my homework,my mother came in. 当我正在写作业的时候，我妈妈进来了。
He didn’t go to bed until his father came back. 直到爸爸回来他才去睡觉。
（1）当主句是一般将来时或祈使句，表示将来的意义时，as soon as等引导的从句用一般现在时。
I will ring you up as soon as I get to Beijing. 我一到北京就给你打电话。
（2）when引导的时间状语从句，表示主句和从句的动作同时发生或从句的动作先于主句的动作发生；before表示主句的动作发生在从句的动作之前；after则表示主句的动作发生在从句的动作之后；as引导的时间状语从句，强调同时发生，不分先后。
（3）until/till引导的时间状语从句。
①主句的谓语动词是延续性动词时，主句用肯定形式，表示这一动作或状态一直延续到until/till所表示的时间为止。
I will wait for you until/till you come to see me.我会一直等，直到你来看我。
I will read the book until/till I finish it. 我会一直看这本书，直到看完。
②主句的谓语动词是非延续性动词时，用否定形式表示主句的动作直到until所表示的时间才发生。
初中英语主从复合句 (名词性定语宾语+状语从句 )
初中英语专题：主从复合句名词性从句 +定语从句 +宾语从句 +状语从句1．— I can hardly understand the two lines "Looking up, I find the moon bright; Bowing, in homesickness I'm drowned."—It's the famous poem that expresses ____.A．how to admire the bright moonB．how far is the poet away from his homelandC．how the poet misses his homelandD．what they usually do when the moon shines bright2．This famous saying "When I walk along with two others, they must serve me as my teachers" tells us ____.A．how should we treat people B．why we need teachersC．what did we say in public D．who we can learn from全面解析：分析句子结构可知，tells us是谓语动词，其后面需要接一个宾语从句来完整表达句子的意思。
宾语从句的语序应为陈述句语序，即主语+谓语的结构。
选项how should we treat people是疑问句语序；选项why we need teachers意为为什么我们需要老师，然而原句强调的是在与人同行时，可以把他们当作老师来学习，而并非直接讨论为什么需要老师，因此该选项不符合语境；选项what did we say in public是疑问句语序；选项who we can learn from意为我们可以向谁学习，符合原句的意思，即在与他人同行时，可以把他们当作老师来学习，也就是我们可以从他们身上学到东西，此外，该选项是陈述句语序，符合宾语从句的语法要求，故答案为D。
状语从句
3. 条件状语从句
时态：真实条件状语从句中通常用一般 现在时表示将来（主将从现）。非真 实条件状语从句中要用虚拟语气。 引导词：if, unless (除非), as / so long as (只要), on condition (只要), in case (假 使) , providing/provided (that), supposing that（假若，倘使），on condition that(条 件是） 等。
if ,as /long as,unless
e.g. a. We’ll come over to see you on Saturday if we have time. b. We should serve the people as / so long as we live.
1. We will be able to get there on time, _____ our car doesn’t break down on the road. A. as soon as B. as far as C. as long as D. as well as 2. In time of serious accidents, _____ we know some basic things about first aid, we can save lives. A. whether B. until C. if D. unless
初中英语专题：主从复合句 (名词性从句 +定语从句 +宾语从句 +状语从句 )
初中英语专题：主从复合句名词性从句 +定语从句 +宾语从句 +状语从句1．You should（应该）see a doctor，____you don't feel well.A．if B．and C．after D．before全面解析：if，连词，如果；and，连词，和；after，连词，在……后；before，连词，在……前；根据" You should（应该）see a doctor，……you don't feel well."可知这是一个条件状语从句，要表达如果你感觉不舒服的话应该去看医生，故选A。
2．We will go camping if it ____ tomorrow.A．rains B．will rain C．doesn't rain D．won't rain.全面解析：A一般现在是肯定形式，B将来时，C一般现在是否定形式，D一般将来时否定形式，If引导的条件状语从句，主句用一般将来时，从句要用一般现在时，主语是第三人称单数it，去宿营的前提是不下雨，所以用否定句，故选C。
3．—What are you going to do this Sunday?—If it is sunny, I ____ camping with my friends.A．will go B．went C．go全面解析：A一般将来时，B一般过去时，C动词原形，If引导的条件状语从句，主句的时态要用一般将来时，故选A。
4．—Did you tell Jack about the good news?—Oh, I was so busy these days that I just itA．forget B．forgetting C．forgot D．forgets全面解析：A动词原形，B动词的现在分词或者动名词，C动词的过去式，D动词的第三人称单数。
我的状语从句
一· · · 就· · ·
the moment, the minute, the second, the instant, just after, immediately, directly, instantly, as soon as,no sooner…than… hardly… when…/ scarcely… when…
3) We were swimming in the lake ____ suddenly the storm started. A.When B. while C. until D. before
• • • 注：when 经常放在这些句型中： Be doing …when ….(正在做….突然…） Be about to do …when…（正要去做….突 然….）
主句通常前面走，连词引从紧跟后， 从句若在主前头，主从之间有个逗。
首席状从之时间状语从句
引导时间状语从句的从属连词有：when, while, as, whenever, before, after, since, till, until, as soon as, once,the moment, immediately, no sooner…than, hardly…when, by the time, every time, last time…等。
till and until
1)When Tom showed his dad his report card, he said “ Remember, Dady, Edison got bad grades in school, too.” He said, “ Fine, stay in your room until/till you invent the light bulb. 2)I didn’t go to bed until he came back.
初中英语语法全解——主从复合句
初中英语语法全解——主从复合句一、宾语从句在句子中起宾语作用的从句称为宾语从句。
宾语从句可以作及物动词的宾语，也可以作介词的宾语。
I wonder what she’ll say when she finds out.Think about how often it’s used in our daily lives.1.由that引导的宾语从句①当从句部分表示陈述语气时，有连接词that引导宾语从句，that只充当引导词，没有词义，在从句中不作任何成分，在口语或非正式文体中that可以省略。
that引导的宾语从句可以作动词或形容词的宾语，一般不作介词的宾语。
You might think those products were made in those countries.I am glad that you have come.②以下情形that不克不及省略：（1）当出现两歌或两个以上的that引导宾语从句时，第一个that可以省略，其他的不能省略。
She told me（that）the film was very good and that she wanted to see it again.（2）当宾语从句的主语是this/that时，引导词that不能省略。
She said that that was a secret.（3）当that引导的宾语从句中又有从句时，that不能省略。
Studies show that if you are interested in something.2.由whether/if引导的宾语从句①当从句透露表现一种疑问语气时，由whether/if指导的宾语从句、whether/if在宾语从句中不作任何身分，但含有“是否”的含义，在句中不能省略。
I’ll see whether she’s at home.②whether和if通常可以通用，但下列情况只能用whether，不能用if。