状语从句完整讲解和练习
状语及状语从句(语法加练习完整讲解)
结果状语从句
The problem is so difficult that it will take us time to work it out. 这道题如此难以至于我们要用很多时间才能解决。
She is such a kind girl that everyone likes her. 她非常善良，以至于每个人都喜欢她。
not that...but that...(不是因为...而是因为)
条件状语从句
If you want to succeed, you'd better work hard. 如果你想成功，最好努力工作。 I'll come unless it rains. 除非下雨，否则我一定来。 You can borrow the book as long as you promise to keep i Ming studied so hard that he caught up with the others very quickly． 李明学习如此努力，结果很快赶上了其他人。
6．程度状语： I nearly forgot what he had promised． 我几乎忘记了他答应的事。
(2)如果动词前有一个或几个助动词，状语位于第一个 助动词之后。 He has already had his lunch．他已吃过午饭了。
(3)如果动词是be，状语就放在be动词之后。 He is always at home. 他总是在家。
3.状语位于句末，这是状语的通常位置。
We get up at six in the morning. 我们早晨六点起床。
三、状语的分类：
状语按用途可分为：地点、时间、原因、目的、 结果、条件、让步、程度、方式、伴随情况等几类。
高中英语状语从句讲解与练习
高中英语状语从句讲解与练习高中英语状语从句一、时间状语从句1、when的用法（1）when既可引导一个持续性动作，也可引导一个短暂性动作，可用于表示主句和从句动作同时发生或从句动作先于主句动作，有时还可表示从句动作后于主句，意为“当……时候”。
（2）when在beabouttodo……when……，bedoing……when……，haddone……when……，beonone’sway……when……，beonthepointofdoing…when……等结构中作“那时突然”讲。
（3）when“既然、鉴于；尽管，虽然（位于主句之后）；如果”2、while的用法（1）则表示“当……时候”，鼓励的动作必须就是延续性的。
（2）用做同列连词，则表示相对关系“然而”。
（3）引导让步状语从句，相当于although,意为“虽然”，位于主句前。
（4）引导条件状语从句，相当于as/solongas，意为“只要”。
3、as的用法（1）则表示“当……时候”，特别强调同时出现，不所指先后。
（2）说明两种正在发展或变化的情况，表示“随着”，表示时间的推移。
（3）表示“一边……一边……”（4）强调两个动作紧接着发生。
（5）表示“虽然，尽管”（6）其他含义“正像，正如”，“做为”，“由于，因为”。
4、before的用法（1）一般意为“在……之前”“……才”，“……就”“还没有……”“免得”“不知不觉”“宁可，宁愿”，“否则，要不然”。
（2）itwillbe/was时间段before通常现在时/通常过去时。
在肯定句中，意为“多长时间之后才”；在否定句中，意为“用没法多长时间就”。
5、until和till（1）与肯定句连用，必须是延续性动词。
（2）与否定句属格，必须不为延续性动词，则表示“直至……才，在……之前不……”。
特别注意：notuntil可以用作特别强调句和倒装句强调句：itis/wasnotuntil…that…倒装句：notuntil放句首时，主句要部分倒装。
高中英语状语从句讲解及配 套练习
状语从句状语从句在句中相当于副词做状语, 又叫副词性从句。
状语从句分为时间状语从句、条件状语从句、地点状语从句、原因状语从句、目的状语从句、让步状语从句、结果状语从句和 比较状语从句。
掌握状语从句应当从引导词入手，注意引导词的词义,引导状语从句的引导词都有词义，所以，了解引导词的意思尤为重要。
引导词按意义分为九类: 1）时间 when , as , while , till , until , before , after , since2）地点 where3）原因 because , as , since , now that4）条件 if , unless , once . so （as） long as . in case5）让步 though , whatever （--ever ） as , even though , even if6）目的 so that , in order that7）结果 so ... that8）比较 than , as .. as9）方式 as , as if一、时间状语从句引导时间状语从句的连接词除上述外还有：1）till, not … until …, until, before, sinceDon’t get off the bus until it has stopped.He waited for his father until（till）it was twelve o’clock.It will be five years before he returns from England.常用句型：It is/was/will be …before…要过多久才……It isn’t /wasn’t/won’t be…before…没有多久就……It will be another five days before we finish this task.It is not long before I forgot it all.2）hardly / scarcely … when, no sooner … than, as soon as, once表示“一……就”3）directly, immediately, the moment, the minute that… 一……就He made for the door directly he heard the knock.4）each time, every time, by the time（到……为止）Each time he came to my city, he would call on me.注意：表示未来情况，主句用将来时，从句用现在时。
初中英语状语从句讲解及练习.doc
初中英语之 --- 状语从句1时间状语从句：在一个句子中作时间状语的句子。
引导词:when（当…时候）while（当…时候）as（当…时候）after（在…以后）before（在…以前｝ as soon as（—…就｝ since（自从…到现在）till /until（直到…才｝by the time（到…为止）构成：引导同+陈述语序句子2原因状语从句：在一个句子中作原因语的句子，译作“因为”。
连接词:由连词because, s ince, as引导,也可由for引导。
举例：Ididn’ t go to school y esterday bee ause I was i II.3条件状语从句连接词:if如果,u nless （=if n ot＞除非。
（主将从现原则）举例：If it doesn ’ t rai n tomorrow,we will go h iking.4目的、结果状语从句目的状语从句是指在一个句子中充当目的状语的句子，译作“以此來.......”。
结果状语从句是指在一个句子中充当结果状语的句子，译作“所以......或者如此... 以致于”。
引导词：so that, s o…that, in order thatHe came early so that he c ould get a g ood seat.The boy is so I ittle that h e can't go t o school alo ne.5让步状语从句让步状语从句是指在句子中作让步的状语的句子连接词:though,although, e ven though,even if 译作“尽管 ...... ”举例：Altho ugh he is ri ch, he is no t happy.状语从句其它引导词1.时间状语从句常用引导词:when, as, while, as soon as, while，before,after, sine e , till,until 特殊引导同：.. ... 就... ：the minute, the moment, the second，eg: The moment she s aw the littl e dog, she f ell in love with it.每次... :every timel didn’t real ize how spec ial my mot he r was until I became anadult.While John was wat ching TV, hi s wife was c ooking.The c hildren ran away from th e orchard （果园）the moment they saw the guard.Ever y time I listen to your advice, I get into trouble.2.地点状语从句常用引导同：where特殊引导同：whereve r无论哪里，anywhere 任何地方，everywhere 每个地方A new scho ol will be b uilt where i t was a shop ping center.Wherever yo u go, you sh ould work hard.状语从句练习单项选择1.John does n't letever ybodyinthe kitchen __________ h e could makehis sur prisedinner fortheparty.A. which B. when C. so that D. as if 2.I wouldt hankit __________ you call back this a fternoon for the doctor5 smeeting.A.until B. if C. when D. that3.Asfar as Iam concerned （就我而言），education is about learning and the more you learn,—____ A. the betterlife will you get B. the betterlife you will ge tC. you will get the bet ter lifeD.will you get the bet ter life4.Af ter the war, a new school wasbuilt _____________ t here had once be en（曾经有）a theatre.A. that B. where C . which D. whe n5.—Is Mr.Smith in the office?—Yes , __________ he is in charg e of the office, he mustbe there.A.since B. how ever C. whether D. for 6.As your good friendJ will do ____________help you.A. that I can to B. what I canto C. all that I can D. what I can7.Someone called me up in the middle ofthe night, b ut they hung up（挂断电话）____________ I coul d answer the phone.A.as B.since C. until D. before8.We must hurry up __________catchup with the last train.A. that B. so that to C. in order that D. in ord er toLondon 9.No m atter ________ h ard it ma y be, I will carry it out .A. what B. whatev er C.how D. however 1 0. _________you may do, you must do itwell.A. Which B.Whenever C. What ever D.WhenM. ________ you are so weak, you’d better sta y at home.A.Since B. For C. B ecause D. Though 1 5.1saw Mr.Smith last S unday. We had not seen each other ____________ I left .A. as B. before C.since D. till 16.1’11 be back before you ________ .A.will leave B will have left C.leave D. would lea vel7.If the weather ____________ tomor row, we will go picnic i n the centra 1 park.A wil 1 be fine Bis fine Cis going to be fine D h ave been fine18. ________________________ They wen t on working it was late at night.A. eve n if B.as if C. however D. as tho ughl9.l hurr ied _____________ I wouldn't b e late for c lass.A. sine e B. sotha t C.as if D . unless20.T he volleybal I match will be put off if it __________ .A. will r ain B. rain s C. r ained D. is raining【实例解析】1.（2004年北京市海淀区中考试题）You will sta y healthy ________ you do more exerci se, such as running and walking.A.ifB. howC. beforeD. where2.（2004年江丙省中考试题）…Shall we go on wor king?Ye s, _________ I prefer to have a rest.A. whenB. ifC. be causeD. th ough3.（2004年徐州市中考试题）N one of us kn ew what had happened ___________ they told us abo ut it.A. w henB. unti IC. afterD. though4.（2004年泉州市中考试题）••-1 ho pe you’ll en joy your tri p, dear!—Thank you,mum. Til gi ve you a cal I ___________ I get there.A. untilB. as soon a sC. sinceD. till【中考演练】一.单项填空1. ______ he z s old, he c an still car ry this heav y bag.A. T houghB. Si neeC. ForD. So2.•■-Do you know if he ______ to play ba sket ball wi th us?---1 think he wi II come if h e _______ fre e tomorrow.A. comes; i sB. comes;will beC.will come;isD. will come; will b e3.In the z oo if a chil d _____ into the water a nd can't swi m, the dolph ins may come up _________ him.A. will fall; to he IpB. fall s; to helpC. will fall; help D . falls; hel ping4.1don z t remember _________ he worked in th at city when he was youn g.A. whatB. which C . where D.who5.We wil I stay at ho me if my aunt __________ to visit us t omorrow.esB. c omeC. will comeD. is coming6.Th e police ask ed the child ren _______ cross the st reet _________ the traffi c lights tur ned green.A. not; befo reB. don't; whenC. n ot to; untilD. not; af ter7.1was late for cla ss yesterday ________ t he re was somet hing wrong w ith my bike.A. when B . that C. u ntil D. bee ause8.I’ll go swimming with you if I _________ f ree tomorrow .A. will b eB. shall beC. am D . was9.In t he exam, the ________ yo u are, _______ the ________ mistakes y ou will make .A. carefu I; littleB. more ca reful; fewes tC. more c areful; fewe rD. more c a ref u I; less10.You shou Id finish yo ur lessons _______ you g o out to pal y.A. beforeB. afterC. whenD.while11.1hurried _____ I wouldn't be late for class.A.sinceB. s o thatC. a s ifD. uni ess12.When you read the book, you'd better make a mark ________ you have any questio ns.A. whi chB. thatC. where D . though13.The teacher raised his v oice ________ a ll the stu dents could hear him.A. forB. s o thatC. b ecauseD. i n order14.H e took off h is coat ________ h e felt hot.A. be causeB. asC. ifD.since15.It is ______ th at we'd like to go out f or a walk.A. a lovely dayB. t oo lovely a dayC. so lovely a dayD. such Io vely a day16 . Mary had _______ m uch w ork to do th at she staye d at her off ice all day.A. suchB.soC. tooD. very17.______ I fel t very tired , I tried to finish the work.A. AlthoughB.BecauseC.AsD. As if18.______ t he day went on, the weat her got wors e.A. WithB. SinceC. WhileD.As19.______ well you c an drive, yo u must drive carefully.A. So long asB.ln order tha tC. No ma tter how D . The momentBeijing20. Write to me as soon as you _________ to.A . will get B. get C. g etting D. g ot二.根据中文意思完成下列英语句子1.不管他跟我开什麽玩笑，我都不生气。
状语从句讲解及练习
状语从句讲解及练习初中英语状语从句讲解及专项练习状语从句指由句⼦来作状语。
它可以修饰谓语、⾮谓语动词、定语、状语或整个句⼦。
根据其作⽤可分为时间、地点、原因、条件、⽬的、结果、让步、⽅式和⽐较等从句。
状语从句⼀般由“主句+连词+从句”或者“连词+从句，主句”。
⼀、时间状语从句：由when，before，after，as soon as，since，until，not…until引导。
1. Mozart started writing music when he was four years old.当莫扎特4岁的时候，就开始写⾳乐作品。
2. He went home after he finished his homework yesterday.他昨天做完作业之后就回家了。
3. Mr. brown had worked in a bank for a year before he came here.布朗先⽣来这之前在⼀家银⾏⾥⼯作了⼀年。
4. we began to work as soon as we got there.我们⼀到那就开始⼯作。
Mr green has taught in that school since he came to china three years ago.⾃从格林先⽣三年前来到中国就⼀直在这所学校教书。
5. They walked until it was dark.他们⼀直⾛到天⿊。
6. Xia o ming didn’t leave home until his father came back.⼩明直到他爸爸回来才离开家。
⼆、条件状语从句：由连词if, unless (=if not) 引导。
1.I f it doesn’t rain tomorrow, we will go fishing.如果明天不下⾬, 我们就去钓鱼.2.You will get good grades if you study hard.如果你努⼒学习,就会取得好成绩.3.I will go to the party unless he goes there too.我不会去参加聚会的, 除⾮他也去.(如果他不去,我也不去.)4.You will be late unless you leave at once.如果你不马上⾛,你将会迟到的.(=I f you don’t leave at once, you will be late.)(主将从现)：在条件状语从句中, 当主句是将来时的时候,从句要⽤⼀般现在时.三、原因状语从句：由连词because（因为）, since, as（既然，由于）引导1.I didn’t go to school yesterday because i was ill.我昨天没去上学，因为我⽣病了。
高中英语状语从句讲解和练习(含答案)
状语从句讲解和练习状语修饰动词、形容词、副词或整个句子。
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）状语的位置比较灵活，可以位于句首、句末或句中。
enough用作状语修饰形容词和副词时必须后置。
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，分别表示时间、地点、原因、目的、结果、条件、让步、比较和方式。
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, every time, the day，the instant, immediately , dire ctly, no sooner … than, hardly …when, scarcely … whenI didn’t realize how special my mother was until I became an adult.While John was watching TV, his wife was cooking.The children ran away from the orchard(果园) the moment they saw the guard.No sooner had I arrived home than it began to rain.Every time I listen to your advice, I get into trouble.2．地点状语从句常用引导词：where特殊引导词：wherever, anywhere, everywhereGenerally, air will be heavily polluted where there are factories.Wherever you go, you should work hard.3．原因状语从句常用引导词：because, since, as, since特殊引导词：seeing that, now that, in that, considering that, given that, considering that,My friends dislike me because I’m handsome and successful.Now that everybody has come, let’s begin our conference.The higher income tax is harmful in that it may discourage people from trying to earn more. Considering that he is no more than 12 years old, his height of 1.80 m is quite remarkable.4．目的状语从句常用引导词：so that, in order that特殊引导词：lest, in case, for fear that，in the hope that, for the purpose that, to the end thatThe boss asked the secretary to hurry up with the letters so that he could sign them.The teacher raised his voice on purpose that the students in the back could hear more clearly.5．结果状语从句常用引导词：so … that, so… that, such … that,特殊引导词：such that, to the degree that, to the extent that, to such a degree that,He got up so early that he caught the first bus.It’s such a good chance that we must not miss it.To such an degree was he excited that he couldn’t sleep last night.6．条件状语从句常用引导词：if, unless,特殊引导词：as/so long as, only if, providing/provided that, suppose that, in case that, on condition th atWe’ll start our project if the president agrees.You will certainly succeed so long as you keep on trying.Provided that there is no opposition, we shall hold the meeting here.7．让步状语从句常用引导词：though, although, even if, even though特殊引导词：as(用在让步状语从句中必须要倒装)，while ( 一般用在句首)，no matter …，in spite of the fact that, while, whatever, whoever, wherever, whenever, however, whicheverMuch as I respect him, I can’t agree to his proposal.尽管我很尊敬他，我却不同意他的建议。
状语从句讲解与练习
状语从句讲解与练习一、时间状语从句定义：用从句来表达一件事情或一个行为发生的时间(一) before & afterbefore：“在……之前”，主句动作发生在从句动作之前[主前从后]after：“在……之后”，主句动作发生在从句动作之后[主后从前]He called me after he finished his homework.He had learned English for three years before he went to London.(二)as soon as 一……就…… [主将从现]表示从句动作一发生，主句动作马上就发生。
I'll tell her everything as soon as she comes back.As soon as I reached Canada, I rang him up.(三) since 自从(1) 主句【现在完成时】+ since时间状语从句【一般过去时】He has gone abroad since he was 20.(2) It’s + 一段时间+ since时间状语从句【一般过去时】It is 10 years since we became friends.(四) until(1) 用于肯定句中，表示主句的动作一直持续到从句动作发生或状态出现时为止。
一般可译为“直到……为止”。
主句的动词必须是延续性的。
He will stay here until his mother comes back. [主将从现](2) until用于否定句中，表示主句的动作在从句的动作发生之后才开始。
一般可译为“直到……才……”或“直到……之前不要……” 。
主句的动词多为非延续性。
Don”t get off the bus until it has stopped.The little girl didn’t stop crying until she saw her mom.(五) when & while & as(1) 理论基础①三者都可表示“当……时”② while只接持续性动词，when/as持续、短暂都可以接③while 多用于进行时态，when多用于一般时态(2) 一般时while进行；进行when一般时The telephone rang while I was taking a bath.I was reading a newspaper when he came in.(3) 事件对比用while（然而；却）Father was preparing a report while I was playing PC games.He likes coffee while she likes tea.(4) “随着”/“一边…一边”用asThings are getting better and better as time goes on.She sang as she went along.二、原因状语从句because 因为（不与so连用）(1) because &because ofbecause引导原因状语从句because of 是介词短语，后跟n./pron./V-ing，句中作原因状语-- Why didn't he come here?-- He didn’t come here because he was ill.-- He didn’t come here because of his illness.(2) because & for & since & asbecause 语气最强烈；for放句中，用来表示一种附带或补充解释、说明；since & as 通常放句首，作“既然”讲。
高中英语状语从句专项讲解及练习（有答案）
高中英语状语从句专项讲解及练习（有答案）状语从句1、地点状语从句地点状语从句表示地点、方位，这类从句通常由where, wherever, anywhere, everywhere引导。
Where there is a will, there is a way.有志者，事竟成。
They will go where they are happy.他们想到他们觉得快乐的地方去。
We must camp where we can get water. 我们必须在能找到水的地方露营。
地点状语从句与定语从句的区别:在于分句在句中作什么成分。
作状语，则是状语从句；作定语修饰名词，则是定语从句。
where引导定语从句时，从句前应有一个表示地点的名词作先行词；而状语从句前则无需先行词。
如：Go back where you came from.(where引导地点状语从句）Go back to the village where you came from.(where引导定语从句，修饰village)We went home, where we had dinner. (where引导定语从句，修饰home)2、原因状语从句原因状语从句一般由because(因为)，since(既然)，now that(既然，因为)，as(由于)等连词引导。
（1）because表示直接的原因，表示原因的语气最强，常表示必然的因果关系。
回答why引起的特殊疑问句，只能用because。
Jane wore a raincoat because it was raining.因为天下雨，所以詹穿着雨衣。
He is absent today because he is ill.他今天缺课，因为他病了。
（2）since表示对方已经知晓、无须加以说明的原因或事实，语气比because稍弱。
I'll do it for you since you are busy.既然你忙，我来替你做吧。
状语从句课件讲解和练习
2 on / upon doing / on upon one’s +n
On arriving at the station, the thief was arrested. On his arrival in Paris, he was recognized as a famous person.
1 as 引导的让步从句要倒装,句型为： 形容词/ 副词/ 名词 不带冠词 / 动词 原形 +主语+谓语 Young as he is, he knows a lot. Much as I like it, I can’t afford it. Farmer as he is, he is well-educated. Try as I might, I couldn’t lift the stone. 2 although不倒装, though可倒装也可不 倒装, as 必须倒装
We didn’t go home _____ we finished the work. A. since B. until C. because D. though
It was not ______ she took off her dark glasses ______ I realized she was a famous film star. A. when; that B. until; that C. until; when D. when; then
另外, when/while还作并列连词,连接并列分句, while表示 “而,可是”如: I like reading while my wife enjoys watching TV. when表示 “就在这时” 在下列结构中,表示某 件事正在发生或刚刚发生,另一动作同时发生。
3状语从句讲解及专项练习附答案
3状语从句讲解及专项练习(附答案)精锐教育学科教师辅导讲义curiosity _______________________ h e reached the end of the story.A. whenB. unlessC. afterD. until2. He transplanted the little tree to the garden it was the best time for it.A. whereB. whenC. thatD. until3. H e was about to tell me the secret someone patted him on the shoulder.A. asB. untilC. whileD. when4. ___ y ou understand this rule, you'll have no further difficulty.A. WhileB. OnceC. ThoughD. Unless5. S ubstances will expand or contract heated or cooled, but this is not the case with water.A. when they will beB. if they will beC. as they beingD. when6. I t will not be long man can harness the solar energy and make it serve mankind.A. sinceB. beforeC. whenD. after7. I t was found that although the girl could perceive things with her fingers, this ability ceased her hands were wet.A. the moment whenB. the momentC. in that momentD. before8. A man escaped from the prison last night. It was a long time the guards discovered what had happened.A. beforeB. untilC. sinceD. when9. W e hadn't met for 20 years, but I recognized her I saw her.A. the momentB. the moment whenC. for the momentD. at the moment when10. __ he entered the university, his English has been much improved.A. BeforeB. AfterC. WhenD. Since11. ___________________ H e has been to Beijing for several times _________________ h e came to China.A. beforeB. whenC. sinceD. as12. _________ I watched him he disappeared from sight in the distance.A. unlessB. untilC. asD. when13. ______________ It was going to be some time he would see his parent again.A. sinceB. untilC. whenD. before14. _____________________ M any young people rose and shouted the pop singer appeared on the stage.A. at the momentB. on seeingC. the momentD.when they saw15. he made up his mind to do something, nothing can change his mind.A. OnceB. UnlessC. AlthoughD. As soon as16. _______________________________ They had only been married for no more than three months they began to quarrel with each other.A. sinceB. untilC. afterD. before17. __________________ Scarcely had I finished the workI went home.A. beforeB. thanC. asD. when18. ___________________ We were walking down the street he saw one of his old friends.A. thenB. whenC. soD. but19. ____ It he returns to his native land.A. is long before thatB. is long beforeC. won't be long beforeD. will be long since20. __ the Europeans knew what a compass was, the Chinese had put it into practical use.A. Before longB. Long sinceC. Long agoD. Long beforeA. untilB. ifC. lestD. with2. I'll give you a lift I get home you get off.A. before... ifB. after... asC. if... beforeD. until ... before3. Y ou'll succeed in time you study hard.A. unlessB. as long asC. even ifD. even though4. T he robber told him that he had better keep silent he wanted to get into trouble.A. ifB. unlessC. otherwiseD. whether5. I have made a promise anyone can tell me the secret, I'll give him a little present.A. that ifB. thatC. whenD. so long as6. D on't let her leave the department she is not ready to.A. ifB. thoughC. unlessD. till7. I wrote these words down I should forget.A. forB. soC. lestD. since8. W e are sure to do the work well we don't lose heart.A. forB. so long asC. as ifD. since9. H e would be punished he should make the same mistake again.A. unlessB. ifC. providedD. lest10. _______________________Anyone can borrow books from this library he keeps them clean and returns them in time.A. even ifB. unlessC. so thatD. as long as11. __ you return those books to the library immediately, you will have to pay a fine.A. UntilB. UnlessC. IfD. Provided12. _____________________________ T he parents did not allow their son to swim in the sea he might have an accident some day.A. for fear thatB. in case ofC. besidesD. and that13. _________________________ It is a gripping story and one can't put it down one has finished reading it.A. afterB. whenC. unlessD. until14. _________________ They agreed to rent the house the roof should be repaired.A. on condition thatB. as soon asC. whenD. unless15. _____________________ The more civilized man has become, he is limited by the disadvantage of his environment.A. and the moreB. the lessC. testD. and theA. However late is heB. However he is lateC. However is he lateD. However late he is2. I f we work with a strong will, we can overcome any difficulty, great it is.A. whatB. howC. howeverD. whatever3. __ , I have never seen anyone who's as capable as John.A. As long as I have traveledB. Now that I have traveled so muchC. Much as I have traveledD. As I have traveled so much4. —Dad, I've finished my assignment.—Good, and you play or watch TV, you mustn't disturb me.A. wheneverB. whetherC. whateverD. no matter5. I f that idea is wrong, the project is bound to fail, good all the other ideas might be.A. whateverB. thoughC. whatsoeverD. however6. __ , I have never read any article as good as this one.A. As i have read muchB. Now that I have read so muchC. Much as I have readD. As I have read so much7. __ we want to help each other, we should point out each other's shortcomings.A. Now thatB. AlthoughC. UnlessD. When8. —Did you enjoy yourself atthe party?—Yes, I didn't knowanybody.A. evenB. even thoughC. as ifD. as though9. __ difficulties we meet, we will always keep on trying to do our best.A. HowB. HoweverC. WhatD. Whatever10. _______ Naughty Tom is, he is never late his homework.A. as; forB. though; withC. that; byD. while; with11. _______________________________________ The landowners in India would not vote to lose their land and wealth, it resulted ___________________ a fairer society.A. whether; ofB. even though; ofC. as if; inD. even if; in12. __________ No matter how , he couldn't do any better.A. he worked hardB. hard he workedC. hardly he workedD. he worked hardly13. _______________________ My father doesn't want to buya car now, he needs one in fact.A. butB. soC. becauseD. though14. Shanghai many times, but he still doesn't know the city very well.A. He has been toB. He has gone toC. Though he has been toD. Having been to15. life in a poor country can be difficult, it can broaden a person's view of the world.A. IfB. AlthoughC. BecauseD. When16. it is that you've found, you must give it back to the person it belongs to.A. ThatB. BecauseC. WhateverD. However17. __________________________ H e gave up the hope of passing the examination he had already failed it twice.A. unlessB. ifC. sinceD. until18. as he is, he has rich experience in teaching.A. The youngB. The young manC. A young manD. Y oung man19. __________________________ R od is determined to get a1. He has that it is difficult for him to travel.A. such heavy a work loadB. too heavy a work loadC. so heavy a work loadD. much heavy a work load2. S he was so angry at all ____ he was doing she walked out, and closed the door.A. that. .. thatB. what. .. thatC. what. . . asD. that... which3. T here was such a long line at the exhibition we had to wait for about half an hour.A. asB. thatC. soD. hence4. _ that I couldn't support myself at that moment.A. I was weak enoughB. I was too weakC. So weak I wasD. So weak was IKeys: 1-4 C A B DStep4. 综合训练Part 1.1. —What was the party like?—Wonderful. It's years I enjoyed myself so much.A. afterB. beforeC. whenD. since2. M other was worried because little Alice was ill, especially father was away in France.A. asB. thatC. duringD. if3. W hy do you want a new job you got such a good one already?A. thatB. whereC. whichD. when4. A fter the war, a new school building was put up there had once been a theatre.A. thatB. whereC. whichD. when5. Y ou will be late you leave immediately.A. unlessB. untilC. ifD. or6. I f we work with a strong will, we can overcome any difficulty, great it is.A. whatB. howC. howeverD. whatever7. S he doesn't speak her friend, but her written work is excellent.A. as well asB. so often asC. so much asD. as good as8. H e'll be happy he may be.A. whenB. ifC. becauseD. wherever9. W e'll build a power station water resources are plentiful.A. whereB. in whichC. becauseD. wherever10. _____________________________________ The new secretary is supposed to report to the manager as soon asshe .A. will arriveB. arrivesC. is arrivingD.is going to arrive11. ______________________ T he volleyball match will be put off if it .A. will rainB. rainsC. rainedD. is raining12. ______________________________ Remember to send mea photo of your son next time you to me.A. writeB. will writeC. are writingD. would write13. _________ If city noises from increasing, people shout to be heard even at the dinner table in 20 years from now.A. are not kept; will have toB. are not kept; have toC. do not keep; will have toD. do not keep; have to14. ____________________ I need one more stamp before my collection _______________ .A. has completedB. completesC. has been completedD. is completed15. ______ As she _______ the newspaper, Granny a sleep.A. read; was fallingB. was reading; fellC. was reading; was fallingD. read; fell16. _____If it _______ for the snow, we the mountain yesterday.A. were not; could have climbedB. were not; could climbC. had not been; could have climbedD. had not been; couldclimb17. ______ —If he , he that food.—Luckily he was sent to the hospital immediately.A. was warned; would not takeB. had been warned; wouldnot have takenC. would be warned; had not takenD. had warned;wouldn't have got18. ________ It is 50 years the People's Republic of China was founded.A. afterB. beforeC. whenD. since19. _____________ Not until I began to work how much timeI had wasted.A. didn't I realizeB. did I realizeC. I didn't realizeD. I realized20. __________________ Not until all the fish died in the river how serious the pollution was.A. did the villagers realizeB. the villagers realizedC. the villagers did realizeD. didn't the villagers realize Keys:1-5 DADBA 6-10 CADAB 11-15BAADB 16-20 CBDBAPart 2.21. _____ It was it rained heavily that they didn't come.A. asB. becauseC. forD. since22. _____________ Why not buy a cheaper one, you don't have enough money?A. sinceB. becauseC. forD. though23. _________ I t is ten years I left home.A. whenB. afterC. sinceD. as24. ____________ He speaks English he speaks his mother tongue.A. so good asB. as good asC. so well asD. aswell as25. ____ Try h e might, he couldn't get out of difficulty.A. whenB. whereC. tillD. as26. _ I saw the computer, I showed great interest in it.A. At firstB. For the first timeC. UntilD. Thefirst time27.I don't think you'll be able to understand thisformula(公式) you finish school.A. as ifB. only whenC. evenD. even when28.I often visited Tian An Men Square I was staying in Beijing.A. untilB. duringC. whileD. throughout29. _______________ H e always thinks I'm wrong, I say.A. no matter whateverB. whateverC. whatD. that30. _ t he rain has stopped, let's continue to work.A. ForB. Now thatC. ThatD. Because31. _ , I am sure that the boy is honest.A. Whatever people sayB. No matter people sayC. What people sayD. It doesn't matter people say32. __________ I knew Mr. Green I knew Mrs. Green.A. long beforeB. before longC. long agoD.after long33. _______ They waited ________ it was dark before leaving, they didn't want anyone to see them leave.A. since; becauseB. until; asC. unless; forD.so; because34. _ o ften you ring, no one will answer.A. HowB. HoweverC. WhomD. Whenever35. ___________ I will never give up they do to stop me.A. no matter whatB. howC. whatD.though36. _______ Father was ____ busy in working he often forgot rest or meals.A. very; thatB. so; thatC. such; asD.enough; as37. _____________ We made a decision there would be rain, we should stay at home.A. thatB. ifC. that ifD. whether38. ___________________ I usually watch TV in the eveningI have to study for an examination.A. becauseB. unlessC. whileD. the moment39. _____________________ I had lived there for over thirty years I wanted to return to my motherland again.A. untilB. afterC. whileD. when40. ____________ It was a long time I went to sleep again.A. whenB. whileC. beforeD. until41. ___________ H e must be ill, he looks so pale.A. sinceB. becauseC. asD. for42. __________ I'll take no steps you arrive.A. andB. sinceC. untilD. while43. ___________ You will catch cold put on more clothes.A. if youB. if you will notC. unless youD.until you44. _ he woke slept, this subject was always in his mind.A. If; andB. Both; andC. Either; orD. Whether; or45. ___________________ We had hardly got to the station it began no rain.A. untilB. sinceC. whileD. when46. _________________________________They were surprised that a child should work out the problem they themselves couldn't.A. onceB. thenC. whileD. if47. ___________ My name is Robert, most of my friends call me Bob for short.A. thenB. insteadC. howeverD. but48. __ difficulties are ahead, we are sure to make greater achievements.A. Although; yetB. Although; stillC. /; yetD. allof the above49. _____________________ People don't know the value of health they lose it.A. tillB. beforeC. afterD. Either A or B50. ____________ I didn't help him, not I was unwilling.A. becauseB. sinceC. asD. forKeys:21-25 BACDD 26-30 DDCBB 31-35 AABBA 36-40 BCBDC41-45 DCCDD 46-50 CDDDAPart 3.51. __________ I really wonder he has posted me many parcels we worked together.A. how; afterB. why; whenC. when; beforeD. why; since52. __ t he desert can be called a sea, the camels are the ships in the sea.A. When; soB. If; thenC. Because; soD.If; so53. ______________________ One never expects his success to come he decides to take up hard work.A. whileB. whenC. untilD. since54. _ you talk to someone or write a message, you show your skills to others.A. At timesB. Every timeC. By the timeD.Some times55. ________________________ Although he is so considered a great writer, .A. his works are not widely readB. but his works are notwidely readC. however his works are not widely readD. still hisworks is not widely read56. _ he came to town, he would visit our school.A. AfterB. WhenC. AsD. While57. ______ I hurried I wouldn't be late for class.A. sinceB. so thatC. as ifD. unless58. _ he comes, we won't be able to go.A. WithoutB. UnlessC. ExceptD. Even59. _______ It wasn't the city was liberated.A. long untilB. long beforeC. long afterD.long when60. _________________________________ T he conductor often tells the passengers not to get off the bus it has stopped.A. exceptB. unlessC. untilD. as61. __________ Did you pay a visit during the holidays?A. any placeB. anywhereC. whereD. wherever62. ____________ It was for two weeks mother had been inhospital.A. sinceB. thatC. in whichD. which63. ______ It was _______ I was in college I began to write letters in English.A. since; thatB. that; whenC. when; thatD.where; did64. __________ I shall ring you up you should forget it.A. becauseB. forC. in caseD. in order notthat65. __ it is so fine a day today, we'd better go outing and havea picnic.A. UnlessB. SinceC. WhileD. Although66. ____ As as I know, there isn't anything left to eat.A. soonB. farC. longD. well67. ______________________ The doctor in charge told the young man he didn't allow him to operate on his wounded arm, he would lose it.A. thatB. ifC. whetherD. unless68. _ , we should try our best to protect the environment.A. Whatever people sayB. What people sayC. No matter people sayD. It doesn't matter people say69. __________ You will succeed y ou keep on working at it.A. as far asB. as long asC. as good asD. as hard as70. _______________ The machine is so old it can't be used any more some of its parts are changed.A. as; unlessB. that; unlessC. that; ifD.whether; or71. —My watch started up again.—You should have it repaired it's working now.A. sinceB. untilC. howeverD. even though72. __________ I'm going away; she will go is up to her to decide.A. if or notB. whether or notC. howeverD.even though73. _____________ We couldn't feel air i t were moving.A. as long asB. now thatC. if notD.unless74. _____________________ We can't afford to buy that flat. It's expensive for us.A. too muchB. far moreC. much tooD. very too75. _______________ The moon is much closer to us .A. than any other starB. than any starC. as any otherstar D. like other stars76. _ to my surprise, he forgot my birthday at all.。
高考状语从句讲解和练习题
⾼考状语从句讲解和练习题定义——在复合句中由从句表⽰的状语称作状语从句，状语从句由从属连词引导，也可以由⼀个起连词作⽤的词组引导，有时甚⾄不需要连词⽽直接和主句连接起来。
类型——时间、地点、原因、结果、条件、⽬的、让步、⽅式、⽐较状语从句。
1.引导词when, while, as, as soon as, once, before, after, every time, each time, since, whenever, ever since, until ,till等。
2.whenever, each time, every time的⽤法。
注：whenever=no matter whenevery time / each time 每次，whenever 每当······时，表⽰习惯性、经常性的动作。
Whenever we met with difficulties, they came to help us.Each time he came to town he would visit our school.Eevery time I went to his house, he was out.注：whenever=no matter whenwhenever既可以引导时间从句也可引导名词性从句，no matter when只可以引导时间状语从句。
It does not matter whenever the party begins.3.before的汉英表达1）before的基本含义是“在·····以前”The train had left before he got to the station.注意：与before对应的是after引导的时间状语从句，表“在·····之后”。
状语从句讲解及习题附答案
状语从句讲解及习题附答案（一）状语从句概述定义状语从句用作状语，是起副词作用的句子。
位置状语从句可以放在主句之前，也可以放在主句之后，时间、条件、原因和让步状语从句放在句首时需要用逗号和主句隔开。
分类根据其作用可以分为时间、地点、原因、条件、目的、让步、方式和比较等状语从句。
作用它可以修饰谓语、非谓语动词、定语、状语和整个句子。
（二）状语从句详解1. 时间状语从句引导词用法示例when 意为“当…的时候”。
When引导从句的谓语动词可以是延续性动词，也可以是瞬间动词。
并且when有时表示“就在那时”A liar is not believed when he speaks the truth.说谎者讲真话时也没有人相信。
When he arrives, I’ll call you. When you laugh and smile, your body relaxes.while 意为“在…的时候，在…的同时”。
While引导从句的谓语动词必须是延续性的，发生时间较长，并强调主句和从句的动作同时发生（或者相对应）。
While有时还可以表示对比。
While I was standing at the window, I saw several boys running along the street.While John was watching TV, his wife was cooking.as 意为“一边…一边…”。
As引导的动作是延续性的，发生时间较短，一般用于主句和从句动作同时发生；as也可以强调一前一后。
The writer was angry as he was travelling on a train to London because someone had invaded his “space”.He smiled as he stood up.after 意为“在…之后”。
状语从句详细讲解与练习
2.自从她大学毕业已经有六年时间了。 It has been (is) six years since she graduated from the university.
before,after,since
1. He had left the town the day __b_ef_o_re_ she arrived.
2.将来情况－V一般现在时或现在进行时
e.gI’m going to the post office While you are there。
3.过去情况
e.g. I hurt my shoulder while I was doing gym.
When: 1.当…的时候 When I was young, I went to town myself. When he receives the letter, he’ll tell us.
5. It will not be long b_e_f_or_e_ we meat each other again.
6. It __is_/ _ha_s_b_e_e_n ___ (be) two years since we
b_e_g_a_n___ (begin) to use this machine.
2. It was not long _b_ef_o_re_ he left his hometown.
3. I played football _a_f_te_r_ I (had) finished my homework
4. Please tell her I’ll come __a_f_te_r__ I do some shopping.
attention was caught by a bird.
状语从句讲解及练习题50题-有答案
状语从句1.在主从复合句中修饰主句中的动词，形容词，副词等的从句叫状语从句。
可分为，时间状语从句，地点状语从句，原因，目的，结果，条件，让步，比较和方式状语从句。
2.时间状语从句起时间状语作用的句子；可放在句首，句中和句尾常用引导词：when，while, as, after, before, since, till, until, the moment, hardly ⋯when , no sooner ⋯than when, while, as 的用法1)when 用法最广，常可代替while 和as, 在while 引导的从句中，动词只能是延续性的When the fire broke out, all the students were sleeping soundly.The telephone rang while I was taking a bath.2)当两个表示时间延续的动作同时发生而又有对比意味的时候，用while ，在这样的复合句中，主句从句的时态通常是相同的。
Father was preparing a report while I was playing PC games.3)常用as 的情况：一边⋯一边；表示随着短暂动作的发生，另一行为伴随发生As he talked on, he got more and more excited.until 和till 的用法表示“一直到⋯”时，主句和从句都用肯定式；I will wait until/ till the concert is over. 表示“直到⋯才⋯”是，主句用否定，从句用肯定式。
They can't go untilSunday.since 的用法since 引导的从句中，如果是持续性动词，往往理解为某一状态的终止。
He has written to me frequently since he was ill. 自从他病好以来，他常写信给我。
状语从句及练习附答案
状语从句（adverbial clause）复习要点：掌握句法功能，记住连接词语法意义：状语从句是复合句中的一种，整个从句作主句的状语，修饰主句中的谓语动词、形容词、或副词。
置于句首时，状语从句后面一般要有逗号隔开；如果状语从句置于句尾，则从句一般不用逗号。
按照所作的状语和意义可分为时间、地点、原因、目的、结果、条件、让步、方式和比较等九种状语从句。
具体如下：一、时间状语从句（Adverbial Clauses of Time）时间状语从句通常由when,whenever,as,while,before,after,assoon as,since,once,no sooner...then,hardly/scarcely...when,tiLl/until 以及the moment,directly,immediately,the second,thefirst time,next time,every time,等引导。
1.由when,as,while 引导的状语从句：1）when 引导时间状语从句，表示当···，其谓语动词可以是延续性的，也可以是非延续性的，其作用最广泛。
When spring comes,trees turn green,When it rains,I usually go to work by taxi.When we were having lunch,the light went out.I will ring you up when I return.When she pressed the button,the lift stopped.He was eating his breakfast when the doorbell rang.be about to do...when...“就在那/这时，（突然）另一个动作发生了，在这儿只能用when。
高中英语状语从句练习与讲解
高中英语状语从句练习与讲解状语从句状语从句在句中相当于副词做状语,又叫副词性从句。
状语从句分为时间状语从句、条件状语从句、地点状语从句、原因状语从句、目的状语从句、让步状语从句、结果状语从句和比较状语从句。
掌握状语从句应当引导词入手，注意引导词的词义,引导状语从句的引导词都有词思,所以,了解引导词的意思尤为重要。
引导词按意义分为九类:1)时间when , as , while , till , until , before, after , since2)地点where3)原因because , as , since , now that4)条件if , unless , once .so (as)long as . in case5)让步though , whatever (--ever) as, even though, even if6)目的so that, in order that7)结果so ... that8)比较than, as .. as9)方式as , as if例如:1．I fell asleep when ( as , while ) he was doing his exercises .他正作练习时我睡着了。
（时间状语从句）2．When he arrived in Shanghai , his mother met him at the station .他到上海时，他妈妈到车站接他。
（时间状语从句）3．She always sings as she walks .她总是一边走一边唱。
（时间状语从句）4．I waited until he had finished his work .我等到他做完活。
（时间状语从句）5．It was not long before he told me about this affair .不久，他就告诉我这件事。
（时间状语从句）6．He has worked very hard since he entered the factory .自从他进厂，工作一直很努力。
初三中考英语状语从句讲解&练习及答案
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：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.【Till是指直到某一特定事件发生的时候，而在那个时刻之后，该事情或状况仍将持续。
（完整版）状语从句练习
（完整版）状语从句练习状语从句状语从句：指把一句子当着副词作状语时，修饰动词、或整个句子；根据它在句中的作用可分为时间、地点、原因、条件、目的、结果、让步、方式和比较等从句；状语从句前一般由连词（从属连词）引导，也可以由词组引导。
它常位于句首；若位于句中，常用逗号与主句隔开；位于句尾时可以不用逗号隔开。
一、时间状语从句1. 通常由以下连词弓丨导：when / while / as/ after/ before/ as soon as/ since/ till /until / by the time2. 在时间状语从句中，要注意时态一致。
（主将从现）1）.when 当…..的时候: Mozart started writing music when he was four years old.2）.while 在…期间： He visited a lot of places while he was traveling.3）.as 在…的同时；一边…一边...: He smiled as he stood up.4）.after 在...之后: He left the classroom after he had finished his homework the other day.5）.before 在...之前Mr. brown had worked in a bank for a year before he came here.6）.as soon as 一...就... We bega n to work as soon as we got there. I will write to you as soon as i get home.7）.since 自...以来（至U现在） Mr green has taught in that school since he came to china three years ago.8）till /until 直至U : They walked till /until it was dark. Tom didn ' t leave home till / until his father came back.难点---- as/ when/ while的辨析as when while都表示主、从句动作同时发生，三者差异如下：as表示一边…一边"/随着，强调两个动作同时进行，I am cooking as I am singing.when 当…..的时候，从句动作可在主句动作"之前"或"之后"发生lit was raining hard when （as） i got there. 还可表and then; at that moment （正在那个时候/突然）：I am leaving for Beijing when the phone rang.while 在…期间从句动作为延续性动词或状态词I am cooki ng while I am si ngi ng然而（（表转折，对比）she thought I was talking about her daughter, while I was talking about my daughter.Mother was worried because little Alice was ill, especially as （when/ while） father was away.二、条件状语从句要点：状语从句由连词if （如果）、unless （=if not）（除非）弓I导。
状语从句讲解及练习
状语从句状语从句在句中作状语，修饰主句中的动词、形容词或副词等。
状语从句放在主句之前时，常用逗号分开；放在主句之后，一般不用逗号。
状语从句按其意义和作用可分为时间、条件、原因、让步、目的、结果、方式、比较、地点9种。
1．时间状语从句1) 时间状语从句常用连词有when, as, while, before, after, since, till, until, as soon as, hardly … when …, no sooner … than …., the moment等。
2) 时间状语从句一般不用将来时。
因此，主句若为将来时，时间状语从句要用一般现在时。
I’ll go on with the work when I come back tomorrow.3) 连词when, while, as都表示“当……的时候”，但有区别。
as 多用于口语中，强调“同一时间”或“一前一后”，有时还有“随着”的含义。
As he was eating his breakfast, he heard the door bell ring. (强调同一时间)As going out, it began to rain. (强调两个动作紧接着先后发生)As spring warms the good earth, all flowers being to bloom. (as有“随着”的含义)when 强调“特定时间”。
When spring comes, he feels like a trip.When he was eating his breakfast, he heard the door bell ring.while 表示的时间是一段，而不是一点。
while 有时还有对比的含义，意为“然而”。
While he was eating his breakfast, he heard the door bell ring. (强调吃饭的过程)While I was reading, he was playing. (有对比的含义)4) till / until表示“一直到……”时，主句和从句都用肯定式；表示“直到……才……”时，主句用否定式，从句用肯定式。
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Every time I caught a cold , I had pain in my head. .
连接词before的小结：
1. We had sailed four days and four nights before we saw land. “……才”
句状 语 从
状语从句
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 让步状语从句 比较状语从句
.
1.时间状语从句
1)由连词when, while, as, as soon as, before, after, since, till/ until 等引导。
his work.
注意: not until 在句首时要倒装
Not until he saw it himself did he
believe it.
.
4)表示“一…就…”的句型
(1)as soon as, once, the moment/ minute/ second, immediately/ directly/ instantly
2. We hadn’t run a mile before he felt tired. “不到……就”
4. Before I could get in a word, he had measured me. “还没来得及”
It will be a long time before…
2.be doing… when…
3.had done… when…
e.g.
We were about to start when it began to rain.
I was playing computer games when mom
came in.ile I was walking down the street, I came across an old friend. ( while =__w__h_e_n_) ②He likes pop music, while I am fond of folk music. ( while but ③While I really don’t like art, I find his work impressive. (while=__a_lt_h_o_u_g_h___)
.
另外, when/while还作并列连词,连接并列分句,
while表示 “而,可是”如:
I like reading while my wife enjoys watching TV. when表示 “就在这时” 在下列结构中，表示某
件事正在发生或刚刚发生，另一动作同时发生。
1.be about to do… when…
.
We were about to leave____ it began to rain. 2. She thought I was talking about her son, ____, in fact, I was talking about my son. 3. Hardly had I finished my composition ____ the bell rang.
On arriving at the station, the thief was arrested. On his arrival in Paris, he was recognized as a famous person.
.
(3)no sooner… than/ hardly… when / scarcely… when No sooner had they reached home than it started to rain. Hardly had I entered the room when the telephone rang.
As soon as he comes, I’ll tell him. The moment I saw him, I recognized him. I left immediately the clock struck 5.
(2)on / upon doing / on (upon) one’s +n
• 主句用将来时，从句常用一般现在 时表将来
I will tell him when he comes back.
.
2)while, when, as辨析
While引导的时间状语从句只指一段时间， 强调某一段时间内，主从句动作同时发 生。从句动词常是延续性的
When既可以指一个时间点,也可以是一段 时间，可表示主从句的动作同时或先后 发生。从句动词可以是延续性的，也可 以是非延续性的。
As强调主句﹑从句动作相并发生,译为”一 边…一边…”
.
When he returned , his wife was cooking. While he was reading, his wife was cooking. He hurried home, looking behind as he went .
A. when B. while C. as D. during
.
3)until/till(不用于句首)
“延续的动词（肯定式）+until ”表示 “直到…为止”
I waited for him until he came back. “非延续性动词（否定式）+until ”表示 “直到┅才”
He didn’t go to bed until he finished
.
对比训练 1 ____ he heard this, he got very angry. 2. I met Lucy____ I was walking along the river. 3. ____ a child, he lived in the countryside.
A. when B. while C. as