英语连词用法精选课件.ppt

*关于英语连词用法关于英语连词用法第一页，本课件共有15页连词是一种虚词，连词是一种虚词，它不能独它不能独立担任句子成分。用来连接立担任句子成分。用来连接词词，短语短语，从句与句子从句与句子。连词主要可分为两类：*并列连词*从属连词第二页，本课件共有15页一一.并列连词并列连词表示词，短语，表示词，短语，从句或句子之间具有并列关系。从句或句子之间具有并列关系。可以表示并列关系，转折关系，可以表示并列关系，转折关系，和因果关系。和因果关系。and(and(和和)both and)both and（和（和,两者都）两者都）oror（或者）（或者）neither norneither nor（既不（既不也不也不）not only but also(not only but also(不但不但 而且而且)as well as (as well as (和和,也也,除除外外,而且而且)1.1.表示并列关系的连词：表示并列关系的连词：as well(as well(也也,而且而且,),)用于句末用于句末.第三页，本课件共有15页1.He is a scientist,1.He is a scientist,butbut he is a poet as he is a poet as well.well.2.He is a scientist 2.He is a scientist as well as as well as a poet.a poet.4.4.BothBoth New York New York andand London have London have traffic problems.traffic problems.3.Are they coming 3.Are they coming as wellas well?第四页，本课件共有15页2.2.表示转折关系的连词表示转折关系的连词:but while(but while(而而,虽然虽然)yet ()yet (可是可是)however(however(而而)Somebody borrowed my pen,Somebody borrowed my pen,butbut I dont I dont remember who.remember who.He said he was our friend,He said he was our friend,yetyet he would he would help us.help us.第五页，本课件共有15页4.4.表示因果关系的连词表示因果关系的连词 so for thus(so for thus(因此因此)thereforetherefore（因此）（因此）consequentlyconsequently（因而，所以）（因而，所以）1.The child has a bad cough,1.The child has a bad cough,so so his mother his mother take him to the doctor.take him to the doctor.2.You are supposed to get rid of 2.You are supposed to get rid of carelessness,carelessness,forfor it often leads to serious it often leads to serious errors.errors.注意注意:for:for通常不能用于句首，也不能单独使用。通常不能用于句首，也不能单独使用。第六页，本课件共有15页二二.从属连词从属连词是用来引导连接主句和从句的连词。是用来引导连接主句和从句的连词。分为引导分为引导名词性从句名词性从句的连词和引导的连词和引导状语状语 从句从句的连词。（分为连接代词和连接副词）的连词。（分为连接代词和连接副词）(1).that,whether,if(1).that,whether,if 不充当成分不充当成分.(2).(2).连接代词连接代词 who,whom,which,what who,whom,which,what 充当主充当主,宾宾,定定,表语等表语等.(3).(3).连接副词连接副词 when,where,how,why when,where,how,why 状语状语.第七页，本课件共有15页1.引导名词性从句的连词引导名词性从句的连词（1 1）ThatThat，whetherwhether，ifif不充当句子成分的。不充当句子成分的。其其 中中thatthat不仅没有充当句子成分，而且不仅没有充当句子成分，而且没有词义，在句子中只起连接作用。而没有词义，在句子中只起连接作用。而ifif，whetherwhether虽然不充当句子成分，但有词义，表示虽然不充当句子成分，但有词义，表示“是否是否”。如。如He replied He replied thatthat he was going by train.he was going by train.I wonder I wonder ifif its large enough.its large enough.I worry about I worry about whetherwhether I hurt her I hurt her feelingsfeelings.第八页，本课件共有15页（2 2）连接代词）连接代词whowho，whomwhom，whichwhich，whatwhat充当主，充当主，宾，定，表语等。宾，定，表语等。The boys The boys whowho are playing football are are playing football are from Class One.from Class One.（充当主语）（充当主语）He is not He is not whatwhat he used to be.he used to be.（充当表语）（充当表语）Which Which team has won the game is not known team has won the game is not known yet.yet.（充当定语）（充当定语）He asked He asked whomwhom I borrowed the money from.I borrowed the money from.（充当宾语）（充当宾语）(3).(3).连接副词连接副词 when,where,how,why when,where,how,why 第九页，本课件共有15页2.引导状语从句的连词引导状语从句的连词(1).(1).时间时间:when,while,as when,while,as 当当时时 as+as+瞬间瞬间,延续性动词延续性动词“一边一边一边一边”since,till/until,as soon as(since,till/until,as soon as(一一就就),the moment/instant(),the moment/instant(一一就就),),Dont talk Dont talk whilewhile you are eating.you are eating.Shes been playing tennis Shes been playing tennis since since she was she was eight.eight.The moment The moment I finish Ill give you a call.I finish Ill give you a call.第十页，本课件共有15页(2).(2).原因原因:as because for since as because for since ForFor语气最弱语气最弱,引导的分句放在句末引导的分句放在句末.BecauseBecause 语气最强语气最强,句首句首,句末均可句末均可.AsAs(因为因为)置于句首置于句首.SinceSince(既然既然)通常置于句首通常置于句首.(3).(3).地点地点:where,wherever,anywherewhere,wherever,anywhereIll take you Ill take you anywhereanywhere you like.you like.第十一页，本课件共有15页(4).(4).条件条件:if,unless=if not,so/as long if,unless=if not,so/as long as,suppose(that)as,suppose(that)假使假使 Do you mind Do you mind if if I open the window?I open the window?Dont come Dont come unless unless I telephone.I telephone.注意：在条件状语从句中，通常注意：在条件状语从句中，通常要用一般现在时表要用一般现在时表示将来意义示将来意义，而不能直接使用将来时态。不过，有时，而不能直接使用将来时态。不过，有时条件的条件的ifif后可能用后可能用will,will,但那不是表示将来时态，而是但那不是表示将来时态，而是表示表示意愿或委婉的请求。意愿或委婉的请求。如：如：If you If you willwill sit down for a few moments,sit down for a few moments,Ill tell the manager you are here.Ill tell the manager you are here.第十二页，本课件共有15页(5).(5).让步让步:though/althoughthough/although不与不与butbut连用连用.as(as(尽管尽管),even if/though(),even if/though(即使即使)however(however(无论怎样无论怎样),whatever),whatever no matter how/who/which no matter how/who/whichAlthoughAlthough they are twins,they look they are twins,they look entirely different.entirely different.WhoeverWhoever you are,you cant pass this way.you are,you cant pass this way.WheneverWhenever I see him I speak to him.I see him I speak to him.第十三页，本课件共有15页（6 6）.结果结果:So.that,such.thatSo.that,such.thatI went to the lecture I went to the lecture soso early early that that I I got a good seat.got a good seat.（7 7）.目的目的:so that,in order thatso that,in order thatHe raised his voice He raised his voice so that so that everyone everyone could hear.could hear.（8 8）.方式：方式：asas（按照）（按照）,as if,as though,as if,as thoughWhy didnt you catch the last bus Why didnt you catch the last bus asas I I told you to.told you to.第十四页，本课件共有15页感感谢谢大大家家观观看看第十五页，本课件共有15页