状语从句(含练习与答案)第十二讲状语从句(含练习与答案)担任状语的从句叫状语从句,可以用来表示时间、地点、原因、目的、结果、条件、方式、比较、让步等
一、时间状语从句:引导词有after,before,as,once,since,till,until,when,whenever,while,assoonas,themoment/minute…(一…就),thetime,theday,everytime,nexttime,eachtime,bythetime,nosooner…than(一…就),hardly(scarcely)…when(一…就)immediately/directly等.Each/Everytimehecomeshere,hewilldropinonme
HewasilllasttimeIsawhim
上次我见到他时他病了.HardlyhadIgottotheofficewhenmywifephonedmetogobackhomeatonce
=NosoonerhadIgottotheofficethanmywifephonedmetogohomeatonce
IrecognizedhimimmediatelyIsawhim
※when,while与as当主句动作时瞬时的,从句动作是延续的,三者都可以用
when引导的从句动词可以是延续性的或短暂性的,在“be…when…”句式中when表“atthattime(就在这时)”意
while引导的从句中动词必须是延续性的;有时并不表示时间,而表示对比,意“而”、“却”,并列连词,表对照
As强调主、从句动作同时或几乎同时发生,意为“一边…一边…”
WhenIgothomeIfoundthedoorlocked
While/When/aswewereworkinginthefields,itsuddenlybe