一、基本概念关系副词的意思相当于“介词+which结构”,在定语从句中做状语的成分。拆分法分析几个句子,如下:1.Hewillalwaysrememberthedaywhen/onwhichhisfatherreturnedfromAmerica.他将永远记得父亲从美国返回的那一天拆分后:Hewillalwaysremembertheday.HisfatherreturnedfromAmericaontheday..2.Thiswasthetimewhen/atwhichsheleftforBeijing.这就是她动身去北京的时间。拆分后Thiswasthetime.Sheleftforbeijingatthetime.3.Idon'tknowthereasonwhy/forwhichhedidn'tcometothemeetingyesterdaymorning.我不知道他为什么没有参加昨天上午的会议。Idon'tknowthereason.Hedidn'tcometothemeetingyesterdaymorningforthereason.重要提示:在when、where、why关系副词引导的英语定语从句中,只会出现when、where、why或onwhich、atwhich、forwhich等等,绝对不会出现onwhen、atwhere、forwhy这种情况,因为关系副词引导的定语从句只能起状语作用,既不能做动词的宾语,也不能做介词的宾语。二、练习题选出正确的定语从句1、A.Themanissaidtocomefromatownwherenobodyknew.B.Themanissaidtocomefromatownwhichnobodyknew.2、A.Thatistheageinwhenpeopleliveinpeaceandhappiness.B.Thatistheageinwhichpeopleliveinpeaceandhappiness.