状语从句讲解.ppt

状语从句讲解状语从句讲解在在复复合合句句中中由由从从句句表表示示的的状状语称称作作状状语从从句句，它它可可以以用用来来修修饰谓语（包包括括非非谓语动词）、定定语或或状状语，或是整个句子。，或是整个句子。u 准准确确掌掌握握每每一一个个连词的的含含义是是掌掌握握状状语从句的关从句的关键。u 同同时要注意主从句的要注意主从句的时态呼呼应。考核要求考核要求时间状状语从从句句 地地点点状状语从从句句 原原因因状状语从从句句 目目的的状状语从从句句 结果果状状语从从句句 条条件件状状语从从句句 方方式式状状语从从句句 比比较状状语从从句句 让步步状状语从句从句状状语从句从句类型型从属从属连词时间状状语从句从句when，whenever，while，as，before，after，since，now that，until，once，the moment，immediately，no soonerthan，the second，instantly，hardly地点状地点状语从句从句Where,wherever,everywhere,anywhere原因状原因状语从句从句because,as,since,seeing(that),now(that)结果状果状语从句从句so that,sothat,suchthat条件状条件状语从句从句if，unless，as long as,suppose，supposing，in case，so far as，provided目的状目的状语从句从句so，so that，in order that，for fear that，lest让步状步状语从句从句although,though,however(=no matter how),even if,whetheror方式状方式状语从句从句as，as if，as though比比较状状语从句从句asas，not as as，than掌握：掌握：1.when/while/as2.before/after 3.till/until4.since 5.as soon as,immediately,directly,instantly,the moment,the instant,the minute,三者可表示三者可表示“当当时候时候”，区别如下：，区别如下：(1)若若主主句句表表示示的的是是一一个个短短暂暂性性动动作作，从从句句表表示示的的是是一一个个持续性动作持续性动作，三者都可用：，三者都可用：He fell asleep when while,as he was reading.(2)若若主主、从从句句表表示示两两个个同同时时进进行行的的持持续续性性动动作作，且且强强调调主主句句表表示示的的动动作作延延续续到到从从句句所所指指的的整整个个时时间间，通通常常要要用用 while：Dont talk while youre eating.I kept silent while he was writing.(3)若若主主从从句句表表示示的的两两个个同同时时进进行行的的动动作作含含有有“一一边边一一边边”之意思，通常用之意思，通常用 as：She sang as she went along.(4)若若从从句句是是一一个个短短暂暂性性动动作作，主主句句是是一一个个持持续续性性动动作作，可用可用 as/when 但不用但不用 while：It was raining hard when as we arrived.(5)若若主主从从句句表表示示的的是是两两个个同同时时(或或几几乎乎同同时时)发发生生的的短短暂暂性性动作，用动作，用 as/when：I thought of it just when as you opened your mouth.就在你要说的时候，我也想到了。就在你要说的时候，我也想到了。(6)若若要要表表示示两两个个正正在在发发展展变变化化的的情情况况，“随随着着”，用用 as：Things are getting better and better as time goes on.As it grew darker,it became colder.(7)when 可用作可用作并列连词并列连词，表示，表示“这时这时(突然突然)”；while 也也可可以以用用作作并并列列连连词词，表表示示“而而”、“却却”(表表示对比示对比)；但；但 as 则没有类似用法：则没有类似用法：We were about to start when it began to rain.He likes coffee,while she likes tea.注意：注意：注意：注意：当当使使用用连连接接词词when表表示示“时时候候”时时，它它所所引引导导的的从从句句中中谓谓语语动动词词用用一一般般现现在在时时或或者者一一般般过过去去时时，不不能能用用完成时态；完成时态；when，while和和as都都引引导导表表示示时时间间的的状状语语从从句句，它它们们的的区区别别在在于于动动作作发发生生的的时时间间顺顺序序。用用when时时，从从句句的的动动作作可可以以与与主主句句的的同同时时发发生生或或先先于于主主句句动动作作发发生生；用用as时时从从句句和和主主句句动动作作同同时时发发生生；用用while时时从从句句和和主主句句动动作作同时发生同时发生，也可表示，也可表示持续一段时间持续一段时间。1._ we were talking,Mr.Smiths came in.2._ they came home,I was cooking dinner.3.I was about to go to bed _ I heard someone knock at the door.4._ we were watching TV,he was studying.5.He is fat _ his brother is thin.6._ she sang,tears ran down her face.用用when,whilewhen,while或或as as 填空填空:While/As/WhenWhenwhenWhilewhileAsBefore在在之前；之前；After在在之后之后表示主从句的表示主从句的动作先后作先后发生生1.当当主句主句用用将来将来时，从句从句总是用是用现在在时；2.如如果果before引引导的的从从句句谓语用用的的是是过去去时，则主主句句动词多用多用过去完成去完成时；3.After表表示示主主句句动作作发生生在在从从句句动作作之之后后。主主句句和和从从句句的的动作的作的时间关系正好与关系正好与before引引导的从句相反。的从句相反。1.It willwill be four days beforebefore they comecome back.2.My father had had leftleft for Canada just beforebefore the letter arrivedarrived.3.AfterAfter you thinkthink it over,please letlet me know what you decide.4.AfterAfter we hadhad finished the work,we wentwent homeBefore 与与 after1.Finish your homework _ you go out to play.2.He had walked three days _ he found water.3.It was not long _ he left his hometown.Before 与与 after4.I played football _ I(had)finished my homework5.Please tell her Ill come _ I do some shopping.6.It will not be long _ we meat each other again.till和和until一一般般情情况况下下两两者者可可以以互互换，但但是是在在强调句句型型中中多用多用until。注注意意：如如果果主主句句中中的的谓语动词是是瞬瞬时动词时，必必须用用否否定定形形式式；如如果果主主句句中中的的谓语动词是是延延续性性动词时，用用肯肯定或否定形式都可以，但表达的意思不同。定或否定形式都可以，但表达的意思不同。I didnt go to bed until（till）my father came back.It was not until the meeting was over that he began to teach me English.I worked until he came back.我工作到他回来我工作到他回来为止。止。I didnt work until he came back.他他回回来来我我这才才开开始始工工作。作。till 与与 until1.He lived with his parents _ he graduated from college.2.The children wont come home _ its dark.3._ you told me I had no idea of it.4.Not _ he told me did I know the truth.5.It was _ the war was over that he returned to his land.since引引导的的从从句句的的谓语动词可可以以是是延延续性性的的动词，又又可可以以是是瞬瞬时动词。一一般般情情况况下下，从从句句谓语动词用用一一般般过去去时，而，而主句主句的的谓语动词用用现在完成在完成时。I have been in Beijing since you left.区区别：1.It is since从从以来多以来多长时间了了It is five years since we met last time.2.It is before(才才)It was a long time before I went to sleep again.as soon as,immediately,directly,instantly,the moment,the instant,the minute I will go there directly I have finished my breakfast.吃完早饭，我立即到那里去。吃完早饭，我立即到那里去。The moment I heard the news,I hastened to the spot.我一听到消息，马上赶到了出事地点。我一听到消息，马上赶到了出事地点。As soon as I reach Canada,I will ring you up.我一到加拿大，就给你来电话。我一到加拿大，就给你来电话。hardly(scarcely,rarely)when,no soonerthan主主句句用用过去去完完成成时，从从句句用用一一般般过去去时。当当hardly,scarcely,rarely和和no sooner位位于于句句首首时，主主句句应用用倒装倒装语序序。He had no sooner arrived home than he was asked to start on another journey.No sooner had he arrived home than he was asked to start on another journey.1.I _(be)at his bedside since he _(become)ill.2.It _(be)two years since we _(be)university students.3._(一一就就)he saw the monster,he turned pale.填空4.The spy had _ returned home than he was told to go to another country.5.We had _ returned home when it rained.6._ had we begun when we were told to stop.填空(1)当当主主句句为将将来来时态或或具具有有将将来来意意义时，时间状状语从从句通常要用句通常要用一般一般现在在时表示将来意表示将来意义。Turn off the lights before you leave.I will tell him as soon as he arrives.(2)与与since 从从句句搭搭配配的的主主句句的的时态通通常常是是现在在完完成成时态。He has lived here since 1999.Where have you been since I last saw you?改错题改错题:1.She was walking on the street while the accident happened._2.I will call you as soon as I will finish my homework._3.After the queen knows it is I that help you run away,she will kill me._ 4.I have finished the composition when the bell rang._ 1.I got in touch with Charles _ I received his letter.A.when immediatelyB.soonC.immediatelyD.suddenly2.We were just _ calling you up _ you came in.A.about;whenB.on the point of;whileC.on the point of;whenD.on the point of;as3.Most of his great novels and plays were not published or known to the public _ his tragic death in 1786.A.even beforeB.ever sinceC.until afterD.until before4.Babies sleep 16 to 18 hours in every 24 hours,and they sleep less _ they grow older.A.whileB.asC.whenD.after5.Did you remember to return the book to our English teacher?Yes.I gave it to him _ I saw him.A.onceB.whileC.ifD.the moment6.A warning news report from Qatar announces that a group of Islam will continue to kill Americans wherever they are _ they leave the Arab world forever.A.even thoughB.in caseC.wheneverD.until7.It will be five years _ we meet again.A.sinceB.untilC.beforeD.when8.How can they learn anything _ they spend all their spare time watching TV?A.whereB.whenC.whileD.but要要点点:由由连词where和和复复合合关关系系词wherever(=no matter where)引引导.句型句型1：Where地点从句，（地点从句，（there）主句）主句。【注注意意】此此句句型型通通常常译成成“哪哪里里哪哪里里就就”；主主句句在在从从句句后后面面时，there可可用用可可不不用用；如如果果主主句句在在从从句句的前面的前面时，一般都不用，一般都不用there。例如：。例如：Where there is no rain,farming is difficult or impossible.You should have put the book where you found it.句句型型2：Anywhere/wherever地地点点从从句句，主主句句。【注注意意】anywhere本本身身是是个个副副词，但但是是，常常可可以以引引导从从句句，相相当当于于连词，意意思思相相似似于于wherever,anywhere引引导的的从从句句可可位位于于主主句句之之前前，也也可可以以位位于于主主句句之之后后。而而wherever本本身身就就是是个个连词，表表示示“在在何何处，无无论何何处”。Wherever the sea is,you will find seamen.1.Where there is a will,there is a way.2.Wherever you go,I go too.判断下列句子类型判断下列句子类型1.You would let your children play where you can see them.2.You would let your children play in the place where you can see them.1.I have been keeping the portrait _ I can see it every day,as it always reminds me of my childhood in Paris.A.sinceB.whereC.asD.if2.“_ I live there are plenty of sheep.”,said the boy _ pride.A.Where;with B.When;inC.That;inD.Why;with3.He seemed to have been asleep,so I said nothing,but sat _ he would see me _ waking.A.whether;whenB.that；whenC.which；whereD.where；when4.You can still find bones of the birds _ they used to live.A.in whichB.in the placeC.whereD.that5.“_ my feet remain standing above the water level,there is hope.”said the captain.A.WhereB.Even ifC.WhileD.Although主要连词：主要连词：because,as,since,forseeing(that),now(that)considering(that)1.I didnt go to school yesterday because I was ill.2.Since everybody is here,lets begin our meeting.3.As you are in poor health,you should not stay up late.4.I asked her to stay to tea,for I had something to tell her.1）because语势最最强，用来说明人所不知的原因，回答why提出的问题。当原因是显而而易易见的或已已为人人们所知所知，就用as或 since。I didnt go,because I was afraid.Since/As the weather is so bad,we have to delay our journey.2）如果不不是是说明明直直接接原原因因，起补充说明的作用，用for。He is absent today,for he is ill.He must be ill,for he is absent today.3)as和for的区别：通常情况下，as引导的从从句句在在主主句句前前，for引导的从句在主句后从句在主句后。例：As the weather is cold,I stay at home.I stay at home,for the weather is cold.用用because,as,since 与与for填空填空:1.-Why are you crying,meg?-_ Ive broken your necklace,mom.2.I went to bed early _ I was tired.3.I was not kind to him,_ he was rude.4._ I had a cold,I was absent from school.5.My mother was ill and I sent for Tom,_ he was a doctor.6._ we are all here,lets begin our class.1.May I go now?_ youve finished your work,you may go.A.AfterB.AlthoughC.Now thatD.As soon as2._ it happened to be a nice day,we decided to go to the beach.A.WhenB.BeforeC.If D.Since主要的主要的连词：so that,sothat,suchthatHe studied hard so that he passed the exam.He was so angry that he couldnt speak.He shut the window with such force that the glass broke.So+adj.+a/an+n.Such+a/an+adj.+n.正正：He is so clever a child that we all like him.这小孩很小孩很聪明，我明，我们都喜都喜欢他。他。正正：They are such clever children that we all like them.这些孩子很些孩子很聪明，我明，我们都很喜都很喜欢。误：They are so clever children that we all like them.sothat结构与构与suchthat结构构转换：Its such an interesting film that we all want to see it.这电影很有趣，我影很有趣，我们都想看。都想看。Its so interesting a film that we all want to see it.这电影很有趣，我影很有趣，我们都想看。都想看。【注注】在在much,many,little,few 这四四个个词前前总是是用用so而不用而不用such：He had so so manymany falls thatthat he was black and blue all over.他摔了他摔了许多跤，多跤，结果全身都是果全身都是伤。He earns so so littlelittle money thatthat he can hardly feed his family.他他赚的的钱很少几乎不能养家糊口。很少几乎不能养家糊口。1.This book is _ rewritten _ children can enjoy it.2.I was caught in a shower,_ all my clothes got wet.3.Its _ cold _ the lake has frozen.4.There are _ many books there _ I dont know which one to borrow.5.Its _ good a book _ Ive read it again and again.6.It was _ a cold day _ there was nobody on the street.7._ cold weather remained for three days _ I had to stay at home all day