case,situation,condition,stage,point,position等作先行词引导的定语从句He’sgothimselfintoadangeroussituation______heislikelytolosecontrolovertheplane.A.whereB.whichC.whileD.whyA分析:定语从句引导词where在句子中作状语,表示“在此情况下”,还可以用inwhich替代。句子意思是:他使自己身临险境,——(在这种情况下)他很可能失去对飞机的控制。situation在句中是“情境、情况”的意思,译为:inthissituation。此处where=inwhich当situation(情境、情况),condition(s)(条件、状况),case(情形、案例),stage(阶段),point(点、程度),position(位置),places(地方)等作先行词时,后面的定语从句引导词有如下两种情况:1.作主语或宾语;2.作状语(1).引导词在从句中作主语或宾语时,引导词用which/that,作宾语时,引导词可以省略。Worryingneverhelpsinasituation(that/which)youcan’tchange.对于你无法改变的的状况,发愁于事无补。(引导词在句子中作宾语)(2)引导词在从句中作状语时,引导词可用where或介词+whiche.g.Icanthinkofmanycases_____studentsobviouslyknewalotofEnglishwordsandexpressionsbutcouldn’twriteagoodessay.A.whyB.whichC.asD.whereD分析:我能想起很多这样的情形:(在这些情形中)学生们显然认识很多英语单词和短语,却写不出一篇优美的短文。此题中定语从句引导词在句中作状语。1.Theydevelopedtheirfriendshiptoastage____________theyoftensharedsorrowandhappiness.他们的友谊已经发展到同甘共苦的地步。2.Thepolicearelookingintoacase____________thesuspectisacat.警察正在调查一个案子,案中的嫌疑犯是一只猫.where/atwhichwhere/inwhich1.Inanhour,wecantraveltoplaces_____wouldhavetakenourancestorsdaystoreach.(2006上海)A.whereB.whenC.whichD.what当堂练习C2.----Doyouhaveanythingtosayforyourself?(2006江西)--Yes,thereisonepoint____wemustinsiston.A.whyB.whereC.howD./3.Hehastofacethecondition______thepressurewasheavy.A.whichB.whereC.howD.whyDB常见的介词搭配atthisstage,atthispoint,inthissituation,in…position,in/under…condition(s),inthiscase,