中考英语专题复习-状语从句市赛课公开课一等奖省名师优质课获奖PPT课件.pptx

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,*,*,*,九年级英语下专题复习17 状语从句,第1页,第2页,在时间状语从句中，通常要用动词普通现在时态表示未来时，用普通过去时表示过去未来式。时间状语从句惯用连词有：,when,as,while,whenever,after,before,till(until),since,once,as soon as(或the moment),by the time,no sooner than,hardly(scarcely)when,every time,等引导。,一、时间状语从句,第3页,(1)when 意为,“,当,时,”,，引导时间状语从句表示主句动作和从句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。,When you are crossing the street,you must be careful.,你(们)过街道时，一定要小心。,1.,考查when,while,as引导，表示“当时候”。,一、时间状语从句,第4页,when 引导时间状语从句中，能够用延续性动词，也能够用短暂性动词。如：,Someone knocked at the door when I was,sleeping,.,当我正在睡觉时，有些人敲门。(延续性动词),I will visit my good friend when I,arrive,.,当我抵达时，我将去探望我挚友。(短暂性动词),一、时间状语从句,第5页,注意：,when,也能够,作并列连词，表示一个动作正在进行时候，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，就在那时有些人求救。,We were working in the chemistry lab,when the lights,went out.,我们正在化学试验室工作，突然灯都熄灭了。,一、时间状语从句,第6页,(2)while 意为,“,当,时,”“,在,期间,”,，引导时间状语从句表示主从句动作在同一时期发生，惯用延续性动词或表示状态词。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.,当我正在玩电脑游戏时，父亲正在清洗汽车。,一、时间状语从句,第7页,(3,)as,意为,“,当,时,”“,一边,一边,”,，,主从句动作同时发生。如：,As they walked,they talked happily.,他们一边走，一边高兴地交谈着。,一、时间状语从句,注意：,while,也能够作并列连词，表转折关系，,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，而我弟兄兴趣运动。,第8页,答案,A,解析 答语中when引导了一个时间状语从句，主句用了普通未来时态，所以从句用普通现在时态，可见正确答案在A与B之中。既然答语用了时间状语往返答，可见问句问询也一定是时间，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,Cwhere；will return Dwhen；will return,第9页,2.,before,意为,“,在,之前,”,，,before,本意为“在之前”，依据详细语境还可了解为“还没,来得及,/还没有就，趁着还没就，不知不觉就，才”等。如：,We cleaned the classroom before we left school yesterday.,昨天离开学校之前，我们清扫了教室。,He had been a cook before he went to college.,他上大学前曾当过厨师。,一、时间状语从句,第10页,答案B。解析这四个词(组)都能够引导时间状语从句，as soon as一就before在之前；after在之后；until直到才。分析句子能够看出句意为“在你走之前把你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,第11页,一、时间状语从句,3.,until,和,till,使用方法：与必定式主句连用，主句谓语必须是延续性动词，,till/until,表示,“,直到,”,；是否定式主句连用，且主句谓语是非延缓性动词时，,till/until,表示,“,直到,才,”,。其强调句型为“,not,until,”,，位于句首时要采取倒装形式。如：,第12页,Ill stay here until you come back.,我会待在这里，直到你回来。(,stay,表示动作能够连续）,He didnt go to bed until/before he finished his homework,.,他直到做完作业才睡觉。(,go to bed,表示动作不能连续),第13页,【考例1】一Hurry up.The bus is coming,Oh,no.We mustnt cross the street _the traffic lights are green福州,Aafter B.since C.while Duntil,答案D。解析本题应从句意人手。until惯用于否定句中，组成notuntil结构，意为“直到才”，该句意为“直到交通灯变绿，我们才能穿过马路”。,第14页,【考例2】The kids didnt start to fly kites in the playground _the rain stopped.,A.if B.until C.whenever 成都,答案B 解析 notuntil直到才。“直到雨停孩子们才能够去操场放风筝”。,第15页,【考例3】Look!Here comes our school bus.,No hurry.Dont get on it _it has stopped.安徽,A.until B.after C.since D.when,答案A解析句中有dont，可想notuntil为固定结构，意为“直到才”。,第16页,引导条件状语从句隶属连词有if,unless(=if not假如不，除非)，as/so long as,while(=as long as 只要)，supposing(that),provided/providing(that),in case(假使)，on condition that(在条件下)等。我们主要看一下由 if 引导条件状语从句。,二,、条件状语从句,第17页,if 意为“假如”，引导普通条件状语从句时，主句用未来时，从句用普通现在时。如：,If it doesnt rain tomorrow,we will go there by bike.,假如明天不下雨，我们就骑自行车去那里。,If I get there early,I can see the doctor quickly.假如我早早地到那里，我就能够快点看病。,第18页,【考例1】_you go to bed earlier,you wont feel tired in the mornings沈阳市,A.Unless B.Because C.If D.When,答案C 解析考查if引导条件状语从句。“假如你早一点上床睡觉，那么你在早晨就不会感到累。”,第19页,【考例2】You wont pass your exams _ you work harder.广东,A.when B.if C.unless D.after,答案C解析when，after一引导是时间状语从句，不合题意；if，unless引导是条件状语从句，If不合句意，“除非你愈加努力地学习，不然，你不会经过考试”。故用unless。,第20页,原因状语从句，,惯用引导连词有 because(因为),as(因为)和 since(既然)。三者区分是：在回答下列问题时候，使用because；对于显而易见原因，惯用 as 或 since；as 和 since 从句常放在主句之前，而 because 从句常放在主句之后。如：,三,、原因状语从句,第21页,Why did you go？,你为何去？,I went because Tom told me to go.,那是因为汤姆叫我去。,As it was raining hard,we had to be indoors.,因为雨太大，我们只好待在家里。,Since you feel ill,youd better not go to work.,既然你感觉不舒适，你最好不要去上班了。,第22页,【考例】Mark isnt coming to the concert _ he has got too much work to do.,A,so B,until Calthough Dbecause,答案,D,解析so“所以”；until“直到”；although“即使”；because“因为”。“太多工作要做”是“没有来音乐会”原因。,第23页,结果状语从句，常由,“so.that.”“such.that.”,(,如此以致)引导。如：,He is so short that he cant reach the apple,.,他太矮了，够不到那个苹果。,It is such a heavy box that I cant move it.,这是个很重箱子，我搬不动它。,四,、结果状语从句,第24页,【考例】The camera is,expensive,I cant afford it.(,本溪),so,that B.such,that,C.so,as to D.enough,that,答案 A 解析 依据题意：这摄影机太贵以致我买不起。expensive为形容词,sothat句中要用形容词或副词；suchthat要用形容词修饰名词。其它两项不能引发从句。故选A。,第25页,引导目标状语从句隶属连词有 so that,in order that(为了，方便)；in case(以防，以免)，lest(省得，以防)，for fear that(以免，惟恐)等。从句中普通含有can,could,may,might,will,would等情态动词。如：,五,、目标状语从句,第26页,Please speak more slowly so that we can make full notes.,请讲慢一点，方便我们能作完整笔记。,I sent the letter by air mail in order that it might reach him in time.,这封信我以航空信发出，方便他能及时收到。,第27页,【考例】More and more people in Beijing are learning English _they can better serve the 0lympic Games,Im sure they will宜昌,Abecause of B so that,Ceven though Das if,答案B解析 本题也应从句意人手。越来越多人学习英语，“为是”能更多更加好地为奥运服务。so that引导一个目标状语从句。,第28页,用来引导让步地点状语从句隶属连词有：though，although，even ifthough，while(即使、尽管)，for all(that)(尽管)whetheror(不论不论还是)以及“疑问词+ever（whatever，wherever，whoever，however，）”和“no matter+疑问词”等。Though he was very tired,he didnt stop working.尽 管 他 很累，他没有停顿工作。,五,、让步状语从句,第29页,【考例1】Shall we go on working?,Yes,I prefer to have a rest.,（南昌）,Awhen Bif C.because Dthough,答案 D解析 依据上句：我们继续工作吗？是，尽管我想休息会。,第30页,【,考例2】Edison never gave up,he failed many times.(,四川),AandBthoughCor,答案 B解析 依据题意：即使爱迪生失败屡次，他也决不放弃。though用来引导让步状语从句。故选B。,第31页,比较状语从句惯用,than,或,asas,引导。,than,表示二者比较，,asas,表示程度相同。如：,Im taller than Tom is,.我比,Tom,高。,He runs as fast as I do.,他和我跑得一样快。,七,、比较状语从句,第32页,【考例】The days are_ in our country.,Aas warm asBas warmer as,Cwarm than D.so warm as,答案 A。,第33页,