单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,专题 状语从句,1,专题 状语从句1,状语从句是如何出题的?,时间,/,条件,状语从句是关键,其他状语从句重点记忆连接词,2,状语从句是如何出题的?时间/条件状语从句是关键其他状语从句重,什么是状语?,什么是从句?,状语是,修饰动词、形容词、副词等的句子成分。,说明时间、地点、原因、目的、结果、条件等。,可作状语的有:名词、副词、介词短语、不定式短语和从句等,必须符合“从句的三个必须”,必须是句子;必须有连接词;必须是陈述句,3,什么是状语?什么是从句?状语是修饰动词、形容词、副词等的句子,什么是状语从句?,用一个句子充当状语成分,那个句子就是状语从句。,I get up,at six,when it is dark.,I get up,at school,where I study.,4,什么是状语从句?用一个句子充当状语成分,那个句子就是状语从句,状语从句,状语从句同,副词,介词词组,等作状语一样,用于,修饰谓语,,说明谓语动作的,时间,地点,方式,手段,条件,程度,比较,原因,目的,结果,等,I get up at 6:00,It is dark,I get up when it is dark,5,状语从句5,状语从句分类,表示时间,表示地点,表示原因,表示结果,表示目的,表示条件,表示让步,表示比较,返回,6,状语从句分类表示时间 返回6,时间状语从句,I was watching TV at ten oclock yesterday.,I was watching TV when my mother got home.,-,时间状语,-,时间状语从句,7,时间状语从句-,时间状语从句的,引导,词,:,when,(,当,时候),while,(,当,时候),before,(在,之前),after,(在,之后),till/until,(直到),as soon as,(一,就,),,as,(当,时,一边,一边,),since,(从,以来),by the time,(,当时候),等引导。,8,时间状语从句的引导词:8,在忘记之前,我要把它写下来。,我一到上海就会写信给你。,我们一直到雨停了才离开。,We did,nt,leave,until,the rain stopped.,As soon,as,I arrive in Shanghai,I will write to you.,Ill write it down,before,I forget it.,9,在忘记之前,我要把它写下来。We didnt leave,在时间状语从句里,当主句是一般将来时,,从句用一般现在时。,I,ll,ring you up,as soon as,I,get,to New York.,I,will,tell him everything,when,he,comes,back.,He,wont,believe it,until,he,sees,it with his own,eyes,.,10,在时间状语从句里,当主句是一般将来时,10,考查,when,while,as,引导,,表示,“,当,时候,”,。,11,考查when,while,as引导,11,(1)when,意为,“,当,时,”,,,“,在,.,之后,”,,引导的时间状语从句表示主句的动作和从句的动作同时或先后发生。如:,I feel very happy when you come to see me.,你,(,们,),来看我时,我感到很高兴。(先后),When you are crossing the street,you must be careful.,你,(,们,),过街道时,一定要小心。(同时),1.when,的用法,12,(1)when 意为“当时”,“在.之后”,,(2)when,引导的时间状语从句中,可以用延续性动词,也可以用短暂性动词。如:,Someone knocked at the door when I was,sleeping,.,当我正在睡觉时,有人敲门。,(,延续性动词,),I will visit my good friend when I,arrive,.,当我到达时,我将去看望我的好友。,(,短暂性动词,),例:,_you smile at others,,,they will smile back.,A Before B When C Until D Though,B,13,(2)when 引导的时间状语从句中,可以用延续性动词,也可,注意:,when,也可以,作并列连词,表示一个动作正在进行的时候,突然间发生了另外一件事。如:,I was fishing by the river,when someone called for help.,我正在河边钓鱼,就在那时有人求救。,We were working in the chemistry lab,when the lights,went out.,我们正在化学实验室工作,突然灯都熄灭了。,14,注意:when 也可以作并列连词,表示一个动作正在进行的时候,while,意为,“,当,时,”“,在,期间,”,,引导的时间状语从句表示主从句的动作在同一时期发生,常用延续性动词或表示状态的词。如:,They rushed in while we were discussing problems.,当我们正在讨论问题时,他们冲了进来。,Father was cleaning the car while I was playing computer,games.,(,while,表示两个动作同时发生),当我正在玩电脑游戏时,爸爸正在清洗汽车。,2.while,的用法,15,while 意为“当时”“在期间”,引导的时间状语从,例:我吃饭时你可以去游泳。,You can go swimming while Im having lunch.,16,例:我吃饭时你可以去游泳。You can go swimmi,注意:,while,也可以作并列连词,表转折的关系,,相当于,but,,译为“然而”。如:,I like listening to music,while my brother likes doing sports.,我喜欢听音乐,而我的兄弟爱好运动。,17,I like listening to music,whi,as,引导时间状语从句时,,意为,“,正当,,一边,.,一边,,随着,”,等意思,(1),表示某事一发生,另一事情随即发生,As the sun rose the fog disappeared.,太阳一出来雾都消散了,(2),表示某事发生的过程中另一事发生,.,As he was speaking there was a loud explosion.,正当他在说话的时候,出现了一声巨响,.,(,从句用进行时态,),I heard the murmur of their voices as I crossed the hall.,我走过大厅的时候听到他们在嘀咕什么,.,(,两个动作都是一般时态,),3.as,的用法,18,as 引导时间状语从句时,意为“正当,一边.一边,随着,(3),表示两个动作同时发生,.,He smiled as he passed.,他路过的时候笑了一下,.,(两个动作都是短暂的),Helen heard the story as she washed.,海伦一边洗衣服一边听故事,.,(两个都是延续性动作),He saw that she was smiling as he read.,他看到她一边看书一边笑,.,(两个都是延续性动作),We get wiser as we get older.,我们随着年龄的增长而变得聪明起来,.,(随着时间的变化而变化),19,(3)表示两个动作同时发生.19,答案,A,解析,答语中,when,引导了一个时间状语从句,主句用了一般将来时态,所以从句用一般现在时态,可见正确答案在,A,与,B,之中。既然答语用了时间状语来回答,可见问句询问的也一定是时间,从而确定正确答案为,A,。,【考例】,Mum,_ shall we have lunch?,We will have it when your dad_.,连云港,A,when,;,returns B,where returns,C,where,;,will return D,when,;,will return,20,答案A解析 答语中when引导了一个时间状语从句,,4.,before,的用法,before,引导的时间状语从句通常表示主句的动作发生在从句的动作之前,反之则用,after.,可意为“在,之前”,根据具体语境还可理解:,“,还没,来得及,/,还没有,就,”,,,“,趁着还没,就,”,,,“,不知不觉就,,,才,”,等。,21,4.before 的用法21,We cleaned the classroom before we left school yesterday.,昨天离开学校之前,我们打扫了教室。,He had been a cook before he went to college.,他上大学前曾当过厨师。,例:,You must make sure your tea is not too _,you drink it.,A before B after C since D while,C,22,We cleaned the classroom befor,答案,B,。,解析,这四个词,(,组,),都可以引导时间状语从句,,as soon as,一就,before,在之前;,after,在之后;,until,直到才。分析句子可以看出句意为“在你走之前把你的电子邮件地址给我好吗,?,”,【考例】,Could you please give me your e-mail address _you go?,昆明,A.as soon as B.before C.after D.until,23,答案B。解析这四个词(组)都可以引导时间状语从句,a,5.,until,和,till,的用法:,(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,.,till,和,until,都表示,“,直到,”,,常可换用,但,till,不用于句首,也不可用于强调句,.,Ill stay here until you come back.,我会待在这里,直到你回来。,(,stay,表示的动作可以持续),24,5.until 和till 的用法:Ill stay,(2),主句谓语动词是,非延续性动词,时,用,否定形式,表示主句的谓语所表示的动作直到,until,所表示的时间才发生,.,构成句式,not.until.,,有时不用,not,,而用其他如,never,、,nothing,等表示否定的词,.,He didnt go to bed until/before he finished his homework,.,他直到做完作业才睡觉。,(,go to bed,表示的动作不能持续,),25,(2)主句谓语动词是非延续性动词时,用否定形式表示主句的谓,【考例,1,】一,Hurry up.The bus is coming,Oh,no.We mustnt cross the street _the traffic lights are green,福州,A