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1、第22讲状语从句一、状语从句的本质英语中的状语从句有九大类，分别可表示：时间、地点、原因、结果、目的、条件、让步、比较、方式。从本质上来讲，状语从句就是用不同的连接词将几个分句连接起来，以表达分句之间特定的逻辑关系。状语从句的引导词主要有：状语从句种类常用连接词特殊连接词时间状语从句when,while,as,before,after,since,till,until,assoonas一些时间名词：themoment,theinstant,theminute,theday,nexttime,everytime；一些副词：instantly,immediat
2、ely,directly固定搭配的连词：nosooner...than,hardly...when,scarcely...when地点状语从句whereWherever,anywhere,everywhere原因状语从句because,as,for,sinceSeeingthat,consideringthat,nowthat,giventhat,inthat,inasmuchas,insomuchas目的状语从句sothat,inorderthat,thatLest,forfearthat,incase,inthehopethat,onpurposeth
3、at,forthepurposethat,totheendthat结果状语从句so...that,sothat,such...thatSuchthat,tothedegreethat,totheextentthat,tosuchadegreethat,tosuchanextentthat条件状语从句if,unlessSuppose,supposing,providing,provided,（特别关注：supposed,provide不用作条件状语从句的连词）,onconditionthat,solongas,aslongas让步状语从句although,t
4、hough,eventhough,evenifWhile（一般用在句首）,as（用于倒装结构）,whatever,whoever,whichever,however,whenever,wherever,whether...or...,as+adj.+as+主谓结构用在句首比较状语从句as,than其他比较句型：themore...,themore...;justas...,so...;AistoBwhat/asCistoD;nomore...than;notAsomuchasB/notsomuchAasB方式状语从句as,theway二、时间状语从句1、w
5、hen+短暂动词(1)相当于：atthattime，从句谓语动词通常是短暂动词，表示某一时刻的动作。a.I'llspeaktohimwhenhearrives.b.I'lltellhimaboutitwhenhecomesback.c.WhenIarrived,hewastalkingonthephone.d.WhenIgotthere,hehadalreadyleft.从句也可接延续动词，这时从句往往用过去进行时态，表示某一时问段内发生的动作。e.ThedoorbellrangwhenIwastelephoning.(2)注意主句和从句的时态搭配，以及不
6、同时态表达的主句动作和从句动作的时间先后关系。例句主从句时态I'llspeaktohimwhenhearrives.I'lltellhimaboutitwhenhecomesback.主句将来时+从句现在时I'llgiveyouacallwhenIhavefinishedthework.I'llgowhenIhavehadmydinner.主句将来时+从句现在完成时Istartedmydinnerwhenheleft/hadleft.HeleftwhenIgot/hadgotthere.主句过去时+从句过去时或过去完成时Ihadstartedmydinne
7、rwhenheleft.HehadalreadyleftwhenIgotthere.主句过去完成时+从句过去时(3)也可用whenever“无论何时”引导时间状语从句。 a.Wheneveryousay"Iloveyou",meanit.Wheneveryousay"I'msorry",lookthepersonrightintheeyes. b.Wheneversomeoneasksyousomethingyoudon'twanttoanswer,smileandask"whydoyouwanttoknow?" c.Smilewheneveryoupic
8、kupthephone,forthecallerwillbeabl
