1、状语从句知识导图定义：在主从复合句中作状语的从句叫作状语从句。状语从句一般修饰主句的动词、形容词或副词时间状语从句 时间状语从句的引导词when 当时候 while 当时候 as 当时候after 在 之后 before 在之前 till 直到为止 until 直到为止ever since 自从 since 自从every/each time 每次 next time 下次 by the time 到时候as soon as一 就once一 就the moment 一 就hardly/scarcely when一 就no sooner than一 就directly/immediately/i
2、nstantly一 就注：在时间状语从句中，通常用一般现在时替代一般将来时；用一般过去时替代过去将来时。e.g. When you get up, ring me up.When he left the classroom, the teacher came in.when, while, as 引导的时间状语从句1) when, while 和 as 的共同用法when, while 和 as 都可以引导时间状语从句，意为“ 当时候 ”。若表示主句中的动词和从句中的动作同时发生，而从句中的谓语动词是延续性动词时，这三个词等同，可以互换。When/While/as we were dancin
3、g, a stranger came in.（延续性动词）2) when/while 和 as 用法区别when 引导的时间状语从句谓语动词既可以是延续性的，也可以是非延续性的，而 while 引导的时间状语从句的谓语动词只能是延续性的。When you came in, I was talking with a few boys.（非延续性）While we were waiting for the bus, it was raining heavily.（延续性）while 和 as 常表示从句的动作与主句的动作同时发生，而 when 表示从句的动作发生在主句动作之前、之后，也可同时发生。
4、They rushed in while/as we were discussing problems.（同时发生）When he had finished his homework, he took a short rest.（先发生+后发生）When I got to the airport, the guest had left.（后发生+ 先发生）注：when 还可表示原因，意为“既然”，引导原因状语从句；也可以用作并列连词，意为“就在那时”，常构成如下结构：be about to do sth when 正要做某事，突然/ 就在那时be doing sth when正在做某事，突然/
5、就在那时.While 表示两个延续性动作同时发生而又有对比意义，主从句时态通常是相同的。While she was making a phone call, I was writing a letter.（对比意义）注：a) 当两个可延续性的动作同时发生而又有对比意义时，从句常用 while 引导，主句和从句的时态通常是相同的。e.g. My brother was washing the dishes while I was cleaning the table.b) While 还可作并列连词，意为“而，却”，表示对比；也可以意为“尽管”，引导让步状语从句。as 意为“随着，一边，一边”,
6、常有以下用法：a) 用于表示两个动作同时或者几乎同时发生。b) 表示两个发展变化中的情况。c) 表示在某事发生的过程中另外一件事发生。d) 表示随着短暂动作的发生，另一动作立刻发生。before 和 after 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。after 意为 “在之后” ，表示主句动作发生在从句动作之后。Please turn off the lights before you leave the classroom.（先发生+ 后发生）He arrived after the game started.（后发生+先发生）注：before 常用
7、于“It will/would(not)+一段时间+before”句型中，肯定句意为“多长时间后才”；否定句意为“用不了多长时间就”It will be a long time before we finished this task. （我们需要很长时间才能完成这个任务）It wont be long before we meet again. （过不了多久我们就会再见面）全国高中英语教师资料群 190624773,该群全国规模最大、氛围最浓、资源超过 30TB,旨在便于高英老师结交同仁交流成长、教学探究资源共享,共同提高行业水平另外群内持续更新优质教学和复习资料;欢迎优秀同行进群,让教学更
8、轻松!让课堂更高效!till 和 until 引导的时间状语从句until/till 意为“直到为止” 。当主句为否定句时，常构成 “notuntil”的结构，意为“直到才”1) 主句是否定句时主句如果是否定句，则此时主句谓语动词用非延续性动词，表示主句的动作从从句表示的时间点才开始，即“直到才”I didnt know anything about it until you told me （否定句，谓语为非延续性动词）2） 主句是肯定句时主句如果是肯定句，则此时主句谓语动词用延续性动词，表示主句的动作直到从句表示的时间点就结束，即“直到为止” 。I will wait for you un
9、til/till you come back.（肯定句，谓语动词为延续性动词）注：用于句首时，常用 until 而不用 till.e.g. Until you told me, I had heard nothing of what happened.在强调结构中 until 不能改成 till，且该强调句式常以“not until” 形式存在，not 与 until 放在一起进行强调。e.g. It is not until youve finished your work that you are allowed to play football.“notuntil”意为 “直到才”，置于
10、句首时，主句用部分倒装。Not until I began to work did I realize how much time I had wasted.since 和 ever since 引导的时间状语从句1) since 意为“自从”。表示强调时，since 前可加 ever，主句常用现在完成时或一般现在时，从句常用一般过去时。I have lived in England since I was three.It is two years since I became a college student.2) 从句谓语动词不同，表达的意义不同。since 引导的从句谓语如果是延续性
11、动词或表示状态的动词，则从句表示的时间是从该动作或状态结束时算起。It has been a year since he worked here.他不在这里工作已经一年了。（work 是延续性动词，因此从该动作结束算起）He has written to me regularly since he was ill. （be ill 是表示状态的动词，因此从该动作结束时算起）since 引导的从句谓语如果是非延续性动词，则从句表示的时间从该动作开始时算起。We havent seen each other since we parted.自从我们分手以后，我们一直没有见过面。（part 非延续性
12、动词，因此从该动作开始时算起）3）“ It is/has beensince+从句”句式。意为“自从有多长时间了”It is/has been 5 years since we last met.自从我们上次见面以来已经有 5 年了。注：It is/has been+since+一般过去时It will be+before+一般现在时It was/had been+since+一般过去时名词短语引导的时间状语从句表示时间的名词短语有时也可引导时间状语从句，常见的此类名词短语有：the time 那时 the moment 一就the minute 一就 the day 那天the last t
13、ime 上一次 the second time 第二次each day 每一天 every time 每一次next time 下一次 any time 任何时候The day he returned home, his father was already dead.注：以上的这些名词短语含有“每次，每天，每分钟”等含义，引导时间状语从句时，这些名词前不加介词，后面不加when 等从属连词。by the time 引导的时间状语从句by the time 意为 “到时候”，常表示到某一时间点为止。引导时间状语从句时，主句常用将来完成时或过去完成时。By the time you gradua
14、te, you will have lived in Australia for one year.By the time he arrived at the airport, the airplane had taken off.表示“一就”的词引导的时间状语从句。表示“一就”的词有：as soon as, immediately, directly, the moment, the minute, “no sooner than”, hardly/scarcely when”等。 这类词语表示从句动作一发生，主句的动作也随即发生。I hardly got to the office whe
15、n my wife phoned me to go back home at once.The moment I saw it, I fell in love with it.注：“no soonerthan”,“hardlywhen”引导时间状语从句时，主句用过去完成时，从句用一般过去时。此外，当把no sooner, hardly/scarcely 提到句首时，主句用部分倒装。No sooner had he reached home than it began to rain. = He had no sooner reached home than it began to rain.H
16、ardly had I told him the news when he stopped listening.=I hardly told him the news when he stopped listening.地点状语从句地点状语从句的引导词有 when 和 wherever。where, wherever 指具体地点时，从句可用于主句之前或之后；where, wherever 表示抽象概念的含义时，从句需放在主句前。A number of high buildings have arisen where there was nothing a year ago but ruins.
17、 （where 表示具体地点）Where there is a will, there is a way.（where 表示抽象概念）where 引导的定语从句和状语从句的区别。Youd better make a mark at the place where you have any questions. （定语从句）Youd better make a mark where you have any questions. （状语从句）地点状语从句与定语从句的转化地点状语从句一般可以转化为定语从句，只要在 where 前加“介词+the place” ，便可变为定语从句原因状语从句原因状语
18、从句的引导词because 因为 since 既然，因为 as 因为 ,由于 for 因为now that 既然 in that 由于某种原因 for the reason that 因为seeing (that) 由于 considering (that)考虑到 given (that) 考虑到because, as, since, now that 的用法和比较区别连词位置 内涵 语气 能否回答 why 能否被强调because（因为） 主句前或后 直接因果关系 强 能 能as（由于） 主句前或后since/now that（既然） 主句前双方都知道的原因弱 不能 不能I am tryin
19、g to lose weight because Im so ashamed of my body.It was because it didnt rain for a long time that the crops failed.As it was a public holiday, all the shops were shut up.Since you are free tonight, why not drop in and play chess with me?Now that you are a high school student, you are responsible f
20、or what you do.注：when 也可以表示原因，意为“既然，考虑到”，相当于 since, considering (that)。Why do you want a new job when youve got such a good one already?条件状语从句条件状语从句的引导词if 如果 unless 除非 once 一旦as/so long as 只要 only if 只要 on condition that 条件是supposing(that)假如，如果 providing/provided that 倘若 in case (that)以防，万一Ones life
21、 has value as long as one brings value to the life of others.Supposing he does not come, shall we go without him?You can use my car on condition that you return it by next Monday.unless 引导的条件状语从句unless 与 ifnot 可以互换，但是 unless 语气较强。在 unless 引导的从句中，谓语不能再用否定式。You will be late unless you leave immediatel
22、y.=You will be late, if you dont leave immediately.注：if 能用于虚拟条件句中，但 unless 不能。only if 引导的条件状语从句如果 only if 引导的条件状语从句位于主句之前，主句用部分倒装；如果 only if 引导的条件状语从句位于主句之后，主句要用正常语序。Only if you finished the work can you play computer games. （主句用部分倒装）Ill tell you the secret only if you promise not to tell anyone els
23、e. （主句用正常语序）条件状语从句的时态当主句是将来时态时，条件状语从句常用一般现在时或一般过去时代替将来时。I will go there tomorrow unless it rains/if it doesnt rain.She said she would come if I invited her.让步状语从句让步状语从句的引导词although/though 尽管 even if/though 即使 as 尽管whetheror 不管还是 whether (or not)无论；是否no matter+疑问词、疑问词-ever 不论although 和 though 引导的让步状语
24、从句although 和 though 两者意思相同，一般可以互换，都可以与 yet, still 或 nevertheless 连用，但不能和 but 连用。Although/Though it was raining hard, (yet) they went on playing football.注：Though 还可用作副词，单独置于句末，意为“但是，可是，不过”；although 不可用作副词。在 even though 中一般不可用 although 代替。e.g. Ive a bit of headache. Its nothing much, though.even if 和
25、 even though 引导的让步状语从句这两个短语表示语气更强的让步，意为“即使”，引导的从句可用陈述语气，也可用虚拟语气。She insisted that her own opinion even if/though she was wrong. （陈述语气）Even if I were busy, I would go. （虚拟语气）as 引导的让步状语从句as 引导的让步状语从句放在主句之前，需用倒装语序，从句的表语、状语或动词原形位于句首。若表语时名词，前置时要省略冠词，though 引导的让步状语从句有时也可以这样用。该句型的倒装结构为：表语/状语/ 动词原形+as/thoug
26、h+主语+助动词/be 动词/情态动词Tired as/though he was, he continued his work.no matter+疑问词和疑问词-ever 引导的让步状语从句引导让步状语从句时，两者可以进行互换。但是疑问词-ever 还可引导名词性从句，而 no matter+疑问词不可以。Everyone will be given a telephone number at birth that will never change no matter where they live. (=wherever they live)（no matter where 引导的让步
27、状语从句）Whoever wants to go can write your name down here.（whoever 引导的名词性从句，不可用 no matter who 替换）whether(or not)和“whetheror”引导的让步状语从句Whether you believe it or not, it is true.Sports will be of great value to people, whether they are men or women, old or young.方式状语从句方式状语从句的引导词as 正如，像；按照方式 as if/though 好
28、像，似乎just as 正如 the way 像as 引导的方式状语从句You must do as the teacher tells you.Always do to the others as you would be done by.注：方式状语从句应该放在主句之后。as if 和 as though 引导的方式状语从句as if 和 as though 引导的从句中一般用虚拟语气。但是，若句中的内容与事实相符或实现的可能性较大，也可用陈述语气。I remember it as if it happened yesterday. （虚拟语气）He closed his eyes as
29、if/though he was tired. （陈述语气）目的状语从句目的状语从句的引导词in order that 为了，以免 so that 为了，以便 for fear (that)以免，唯恐in case 以防，以免 lest 免得，以防 for the purpose that 为了in order that, so that 引导的目的状语从句两者都意为“为了，以便” ，引导的状语从句中需用情态动词 can, could, may, might, would 等。in order that 比 so that正式，引导的状语从句可置于主句之前或之后，而 so that 引导的状语
30、从句只能置于主句后。so that 中的 that 有时可省略。In order that we might see the sunrise, we started for the peak early.Bell wanted to improve it so that it could send several messages at the same time.for fear (that), in case 和 lest 引导的目的状语从句这些从属连词意为“以防，以免”，引导的目的状语从句中的谓语动词有时要用“（should/might/could）+动词原形”。The boy hid
31、himself behind the tree in case/for fear that/lest his father should see him.注：so that 引导的目的状语从句和结果状语从句的区别so that 既可以引导目的状语从句，又可引导结果状语从句。引导目的状语从句时，从句的谓语动词常含有 can, could, may, might 等情态动词。而引导结果状语时则没有。He always works hard so that he may make great progress.（目的状语从句）He always worked hard, so that he mad
32、e great progress. （结果状语从句）结果状语从句结果状语从句的引导词so that 以至于 that 以至于sothat如此以至于 suchthat如此以至于sothat引导的状语从句在 sothat结构中，so 是副词，修饰形容词或副词。引导结果状语从句时常用以下结构。形容词/副词many/few+复数可数名词so + much/little+不可数名词 +that +从句形容词+a(n)+单数可数名词Kitty is so lovely that we all like to play with her.He made so many mistakes that he fa
33、iled the exam once again.注：that 本身也可以引导结果状语从句。What have you done that you look so tired?名词前有 many, much, few, little 修饰时，用“sothat”结构，但当 little 意为“小”时，用“suchthat”结构。Such a little boy has so little difficulty in working out this problem that I admire him very much.suchthat引导的状语从句在 suchthat结构中，such 是形容
34、词，修饰名词名词或名词短语。引导结果状语从句时，常用以下结构：a(n)+形容词+ 单数可数名词such+ 形容词+复数可数名词 +that+从句形容词+不可数名词His plan was such a good one that we all agreed to accept it.We had such terrible weather that we couldnt finish the work.注：“ such + a(n)+形容词+ 单数可数名词+ that” 可与“ so +形容词+ a(n)单数可数名词+ that”互换，但一定要注意不定冠词的位置。e.g. Jack is su
35、ch an honest student that we all believe him.=Jack is so honest a student that we all believe him.so 或 such that 置于句首时，主句要用部分倒装。e.g. So fast did he walk that none of us was his equal.Such good news did we get that everyone was excited.so that 引导的结果状语从句so that 引导状语从句时，意为“ 以至于”，从句前有逗号与主句分开。so that 引导结
36、果状语从句时，从句中一般不用情态动词 can, could 等。He didnt plan his time well, so that he didnt finish his work on time.注：so that 既可以引导目的状语从句，又可引导结果状语从句。引导目的状语从句时，从句的谓语动词常含有 can, could, may, might 等情态动词。而引导结果状语时则没有。比较状语从句比较状语从句一般位于句末，常用的引导词有 as, than.as 引导的比较状语从句as 用于原级比较，常用“asas”结构，其中第二个 as 后的从句即为比较状语从句。否定结构为 “not a
37、s/soas”。He speaks English as well as you do.He doesnt play basketball as/so well as you do.than 引导的比较状语从句比较级常用“than” 结构， than 后的从句为比较状语从句。We do more exercises than we did last term.其它引导比较状语结构“the+比较级,the+比较级”结构，意为“越，越”“nomore than ”n 结构，意为 “和一样不”状语从句的省略状语从句中省略必须具备的条件在表示时间、条件、让步、方式等的状语从句中，如果从句谓语含有 be
38、 动词，主语又和主句主语一致，或其主语是 it，此时可将从句主语和 be 动词一起省略。Though (it is) cold, he still wears a shirt.Unless (you are) here, you cant find this kind of plants.注：as 引导时间状语从句时，其后不能用省略形式，此时要用 when, while 代替。When/While talking, she burst into tears.（此时不用 as 引导）全国高中英语教师资料群 190624773,该群全国规模最大、氛围最浓、资源超过 30TB,旨在便于高英老师结交同
39、仁交流成长、教学探究资源共享,共同提高行业水平另外群内持续更新优质教学和复习资料;欢迎优秀同行进群 ,让教学更轻松!让课堂更高效!if possible/necessary/so 也运用了省略形式，省略了 it is.If (it is) so, you must go back and get it.其它特殊情况状语从句的主语尽管与主句主语不一致，但如果根据主、从句的对应关系判断，意思比较明确，同时从句的谓语又含有 be 动词的某种形式，则可省略从句中的主语和 be 动词。We all expect to live where the place is not polluted.如果状语从句中的主、从句都含有 there be 的某种形式，或只有状语从句含有 there be 的某种形式，从句中的there be 可省略。Give me a call if (there are) any mistakes about the paper
