状语从句重点难点.ppt

状语从句重点难点知识点拨,时间状语从句(Adverbial Clause of Time),1.引导时间状语从句的连接词,(1)表示“一就。”的结构,as soon asno sooner than/hardly(scarcely/barely)when,As soon as the mother heard/had heard the new that her son was kidnapped,she fainted.,He had hardly/scarcely/barely arrived when she started complaining.,The sun had no sooner started to shine than it was clouded over again.,Hardly/Scarcely/Barely had he arrived when she started complaining.,No sooner had the sun started to shine than it was clouded over again.,时间状语从句(Adverbial Clause of Time),1.引导时间状语从句的连接词,(1)表示“一就。”的结构,the moment/the minute/the second/the instantdirectly/instantly/immediately,The moment/The minute/The second/The instant he saw the building on fire,he dialed 999.,Directly/Instantly/Immediately he threw the letter into the letter box,he remembered not having put on a stamp.,时间状语从句(Adverbial Clause of Time),1.引导时间状语从句的连接词,(2)其他引导时间状语从句的连接词,the first time/the last time/next time等名词短语every time/each time 等名词短语by the time 引导时间状语从句，主句谓语动词用完成时。,The first time I saw a woman opening the door for a man,I was very surprised.,Each time I went to a formal dinner,I dressed up carefully.,By the time the ambulance arrived,the old woman had come to.,By the time he graduates from high school,he will have learnt English for 10 years.,时间状语从句(Adverbial Clause of Time),2.as while when 的用法,When/while our English teacher was explaining the grammar to us,the headmaster came in and stopped him.Our English teacher was explaining the grammar to us when the headmaster came in and stopped him.,(1)when 表示时间点或时间段，while只能表示时间段。while引导从句中的动词常为延续性动词，可以用进行时。,As she entered,she responded pleasantly to the interviewers greeting.As the day went on,the weather got worse.,(2)as 强调伴随，常指两个动作同时发生。若从句表示“随着(时间)的流逝，只能用as。,时间状语从句(Adverbial Clause of Time),2.as while when 的用法,He was walking along the street when he ran into an old friend.I had read only a few lines when I heard the bell ringing.He was about to return to the path,when he saw a river nearby,so he went to have a closer look.,(3)当主句是过去进行时，过去完成时或was/were about to do sth.等结构时，从句用when引导，且从句中谓语动词通常是瞬间动词的一般过去时。这时when作“这时/正在那时，突然”解释。,时间状语从句(Adverbial Clause of Time),3.after before 的用法,He bought a house after he sold/had sold his car.Before she went to the interview,she made/had made two journeys.,(1)after从句和before从句中的时态。,(2)before 与can 连用，解释为“还来不及”。,Before I could explain,the cashier barked,“Cant you see theres a queue?Go to the end and wait your turn.”,时间状语从句(Adverbial Clause of Time),3.after before 的用法,(3)It is+时间段+before 时间之后才 It is not long before 不久 long before 很久以后才 before long 不久 一会之后,It was a long time before I got to sleep again.It wont be long before you are of age.He hesitated long before he chose a proper answer.It looks as though it will snow before long.,时间状语从句(Adverbial Clause of Time),4.until句型,(1)Not until 位于句首，主句的主谓结构必须部分倒装。,Not until the war ended did they meet again.,(2)“It is not until that”是“not until”句型的强调，勿使用倒装。,It was not until the war ended that they met again.,地点状语从句(Adverbial Clause of Place),1.引导地点状语从句的连接词,where wherever everywhere anywhere,2.区别where引导的定语从句和状语从句,The Winter Olympic Games are always held where there is plenty of snow.The Winter Olympic Games are always held in the countries where there is plenty of snow.,地点状语从句,定语从句,地点状语从句没有先行词，定语从句有先行词。,条件状语从句(Adverbial Clause of Condition),1.常用连接词,if(如果)unless(除非),2.其他连接词：as(so)long as/on condition that suppose/supposing/provided/providing(that)only if in case given(the fact)that,I will come on condition that John is invited,too.I will go provided the expenses are paid.In case the match is cancelled,what can we do?Only if you practise English as much as possible,are you able to express yourself freely.,只要,假如,只要,如果 万一,倘若考虑到,比较:You should not ski alone in case you fall.,比较:If only the innocent people had not been killed in the war.,原因状语从句(Adverbial Clause of Cause),1.because since as for的用法区别,He disturbed me because I was new.Since you are going,I will go,too.As it is raining,youd better take a taxi.It must have rained last night,for the ground is wet.,原因状语从句(Adverbial Clause of Cause),2.只能用because的情况。,Why arent you coming with us to the concert?Because I have got a bad headache.It was because I wanted to be closer to nature that I moved to the countryside.They think they are so superior just because they make more money than I do.He went to bed early today,not because he was tired,but because he had nothing to do.,(1)在回答由why提出的疑问句时。,(2)在强调句中。,(3)在just simply only等强调词后。,(4)与否定词not连用，或构成并列的because 分句。,原因状语从句(Adverbial Clause of Cause),3.其他连接原因状语从句的连接词。,(1)now that(=since)通常置于句首，从句中多为现在时。,(2)considering(that)考虑到/seeing(that)既然。,(3)in that 本意表示“在方面”，也可以表示“因为”。,Now that you have come,you may as well stay.,Considering(that)hes only been learning English a year,he speaks it very well.Seeing(that)he refused to help us,there s no reason why we should now help him.,Men differ from brutes in that they can think and speak.,结果状语从句(Adverbial Clause of Result)目的状语从句(Adverbial Clause of Purpose),1.引导结果状语从句的连接词。,so that/so that/such that,The boy behaved himself at table so that he was praised by his mother.He passed me a note with such little words on it that I failed to make them out.,2.引导目的状语从句的连接词。,so that/in order that/such thatlest/in case/for fear(that),He devoted such great care to his mother that she might recover quickly.She looked down so that he should not see her eyes.He studies hard in case he should fail in the exam.,比较状语从句(Adverbial Clause of Comparison),2.“The+比较级,the+比较级”结构,3.表示倍数的比较结构,The more a man learns,the more he sees his ignorance.The higher the tree is,the stronger the wind is.,A is twice/three times+bigger/longer/higher+than B A is twice/three times+as big/long/high+as B A is twice/three times+the size/length/height+of B B is half/one-third+the size/length/height+of A,1.引导比较状语从句的连接词：,than/as as/not so(as)as,比较状语从句(Adverbial Clause of Comparison),4.修饰比较级的词,rather,much,many,still,even,far,some,any,a bit,a little,a lot,a great deal,表倍数的词,(1)当形容词比较级作定语时，用much或far，不可用 a great deal/a good deal/a lot 修饰。,I m feeling much/a great deal better than I was.That s a much/far more challenging job.,(2)可修饰最高级的词有almost,nearly,much,very,by far,the next,the+序数词。,比较状语从句(Adverbial Clause of Comparison),5.比较时注意比较对象的前后对应。,The population of Shanghai is larger than that in Beijing.The texts in Book III are much more difficult than those in Book I.It is easier to make a plan than to carry it out.Never before has our country been so powerful as she is today.,方式状语从句(Adverbial Clause of Manner),1.引导方式状语从句的连接词。,as if/as though 好像 仿佛,as if/as though引导的方式状语从句中，既可以用陈述语气，表示与事实相符的情况，也可以用虚拟语气，表示可能性很小或与事实不符的情况。,It looks as if it is going to rain.The child talks as though he were a man.,让步状语从句(Adverbial Clause of Concession),1.引导让步状语从句的连接词。,Although no one was injured,(still/yet/nevertheless)I have a guilty conscience.Today the newspaper is still the cheapest,even though a TV set is costing less and less.Something inside your body is always going on whether you are aware of it or not.While I am not optimistic,I have not given up hope.,though/although/as/while/even if/even thoughwh-ever/no matter+wh-whether or(In spite of/despite the fact that),让步状语从句(Adverbial Clause of Concession),2.让步状语从句的倒装,Clever though/as you are,you cant learn a language in a week.Child though/as he is,he supports his family by selling newspapers.Try though/as you will,you wont manage it.Much though/as I admire him as a writer,I dont like him as a man.,though引导的让步状语从句可以顺装也可以倒装，although 只能顺装，as只能倒装。,让步状语从句(Adverbial Clause of Concession),3.no matter+wh-与 wh-ever的区别,No matter who/Whoever you are,you should obey the law.,(1)引导让步状语从句时，no matter what/when/where/who/which/how 相当于whatever/whenever/wherever/whoever/whichever/however。,(2)no matter+wh-及wherever,whenever,however只能引导让步状语从句，不能引导名词性从句。whoever,whatever和whichever既可以引让步状语从句，还可以引导名词性从句。,whatever happens,he manages to stay calm.whatever is worthy doing is worth doing well.,让步状语从句(Adverbial Clause of Concession),3.no matter+wh-与 wh-ever的区别,Whatever/No matter what difficulties I meet with,I wont give up.However/No matter how difficult the problem is,I wont give up.,(3)引导让步状语从句时:no matter what/whatever+名词 no matter how/however+形容词/副词,让步状语从句其他必须注意的问题,1.as 可以引导哪些状语从句：,让步状语从句其他必须注意的问题,2.since 可以引导哪些状语从句：,3.while 可以引导哪些状语从句：,典型试题,Dont be afraid of asking for help _ it is needed.A.unless B.since C.although D.when(2)Id like to arrive 20 minutes early _ I can have time for a cup of tea.A.as soon as B.as a result C.in case D.so that(3)He was about to tell me the secret _ someone patted him on the shoulder.A.as B.until C.while D.when,D,D,D,典型试题,(4)How far apart do they live?_ I know,they live in the same neighborhood.A.As long as B.As far as C.As well as D.As often as(5)A good storyteller must be able to hold his listeners curiosity _ he reaches the end of the story.A.when B.unless C.after D.until(6)Dad,Ive finished my assignment.Good,and _ you play or watch TV,you mustnt disturb me.A.whenever B.whether C.whatever D.no matter,B,D,B,典型试题,(7)Jasmine was holidaying with her family in a wildlife park _ she was bitten on the leg by a lion.A.when B.while C.since D.once(8)_,I have to put it away and focus my attention on study this week.A.However the story is amusing B.No matter amusing the story is C.However amusing the story is D.No matter how the story is amusing,A,C,典型试题,(9)Parents should take seriously their childrens request for sunglasses _ eye protection is necessary in sunny weather.A.because B.though C.unless D.if(10)_ most of the earths surface is covered by water,fresh water is very rare and precious.A.As B.Once C.If D.Although,A,D,