初中英语状语从句课件.ppt

关于初中英语状语从句现在学习的是第1页，共25页1.What is it?用来修饰主句或主句的谓语2.what are the sorts?时间状语从句 条件状语从句 地点状语从句 原因状语从句 让步状语从句 目的状语从句 结果状语从句 比较状语从句现在学习的是第2页，共25页1.1.时间状语从句时间状语从句时间时间状语从句状语从句关联词关联词as/when/while;after;before;since;till/until;whenever;no sooner than/hardly when 副词副词immediately;名词名词短语短语the moment;the minute;the second;each(every)time;the day(year);next time;the first(second/last)time;by the time 现在学习的是第3页，共25页Examples:When/As/While he was eating his breakfast,he heard the door bell.It has been two years since I came to Beijing.Whenever we met with difficulties,they came to help us.I got in touch with him immediately I received his letter.My sister came the moment she got my message.Every time I catch a cold,I have pain in my back.现在学习的是第4页，共25页 从句动词为非延续性动词:The boy cried when he saw his mother.从句动词为延续性动词:while强调“在的同时”as强调“伴随”的状态，“一边一边”Tom fell asleep while Jerry was giving a lecture.He sang as he went along辨析：辨析：when/while/aswhenwhile,as,when均可现在学习的是第5页，共25页时间状语从句的破题方法时间状语从句的破题方法判断主句和从句动作的延续性非延续性：when延续性：when,while,as同时 while伴随 as现在学习的是第6页，共25页1.He transplanted the little tree to the garden _ it was the best time for it.（2007上海）A.where B.when C.that D.until2.Are you ready for Spain?Yes.I want the girls to experience that _ they are young.(2008上海)A.while B.until C.if D.before真题演练真题演练现在学习的是第7页，共25页（1）until/till延续性动词+肯定语气：到为止e.g.Walk you come to a white house.非延续性动词+否定语气：到才开始 notuntile.g.We begin our discussion he came back.其他引导词：其他引导词：till didntuntil现在学习的是第8页，共25页真题演练真题演练1.A good storyteller must be able to hold his listeners curiosity _ he reaches the end of the story.（2003上海）A.whenB.unless C.after D.until2.My uncle _ until he was forty-five.（2000上海）A.married B.didnt get married C.was not marrying D.would marry现在学习的是第9页，共25页(2)once,the moment,as soon as表示“一就”e.g.he goes,we can clean up.Once (3)before,after表示时间的先后e.g.I found his pen he had left.after 现在学习的是第10页，共25页真题演练真题演练1.Adozenideaswereconsidered_thearchitectdecidedonthedesignof thebuilding.（2006上海）A.because B.before C.whether D.unless 现在学习的是第11页，共25页两种两种since的句型的句型since：.主句用现在完成时（或现在完成进行时）时，从句中用一般过去时e.g.Ive lived here I came to Beijing.It is(has been).+since+一般过去时 five years I began to learn English.“自以 来”sinceIt is since现在学习的是第12页，共25页扩展练习扩展练习1.That was really a splendid evening.Its been years _ I enjoyed myself so much.A.when B.that C.before D.since2.They _ friends since they met in Shanghai.A.have made B.have become C.have been D.have turned现在学习的是第13页，共25页2.2.条件状语从句条件状语从句逻辑关系：引导词：e.g.You will pass the exam you work hard.=You will not pass the exam you dont work hard.假设 if,unless(if not)not unless if 现在学习的是第14页，共25页 在条件下：as long ase.g.I get my fathers permission,Ill go!As long as 现在学习的是第15页，共25页条件状语从句题的破题方法条件状语从句题的破题方法1.读题，确认从句和主句2.分析从句和主句之间的逻辑关系（正面条件/反面条件）3.根据逻辑关系选择合适的引导词正面条件：if,as long as反面条件：if not,unless现在学习的是第16页，共25页正面条正面条件件真题演练真题演练1.Small sailboats can easily turn over in the water _ they are not managed carefully.（2007上海）A.though B.before C.until D.if现在学习的是第17页，共25页2._ there is a snowstorm or some other bad weather,the mail always comes on time.（2007上海春季）A.Because B.If C.When D.Unless反面条件反面条件现在学习的是第18页，共25页3.3.地点状语从句地点状语从句常用引导词:_特殊引导词:_ _ Air will be heavily polluted there are factories.you go,you should work hard.Do you know I can buy a second-hand computer?He follows me I go.wherewhereveranywhereeverywherewhereWhereveranywhere everywhere 现在学习的是第19页，共25页Where there is a will,there is a way._ 无论你去哪里,我都去。_Wherever you go,I go too有志者事竟成。真题演练真题演练现在学习的是第20页，共25页4.原因状语从句原因状语从句(1)引导原因状语从句的连词有 _ _ _ _(2)because,since,as,for 用法比较：because:e.g.-Why are you late?-Because there is a traffic jam.becausesinceasnow that语气最强，回答why时用because，所表示的是直接理由，因果关系不能同so连用。现在学习的是第21页，共25页since/now that:e.g.Since you have got enough money with you now,you can come and buy it next time.as:e.g.As he had been ready for the worst,he was not disappointed at the result.“既然.”表对方已知的事实或理由，常放在句首。“由于.”语气较弱，较口语化，表明显的原因或已知的事实，常放在句首。现在学习的是第22页，共25页for:e.g.It must have rained last night,for the ground is wet.语气最弱，不能放在句首。现在学习的是第23页，共25页_ everybody knows about it,I dont want to talk any more.（2009上海）A.For B.Even C.Since D.However 真题演练真题演练现在学习的是第24页，共25页感谢大家观看2022/9/26现在学习的是第25页，共25页