引导时间状语从句的特殊形式时间状语从句通常由after,before,when,while,as,once,till,since,assoonas等从属连词引导。此外还有一些特殊的形式引导时间状语从句。一、immediately,directly,instantly用于assoonas的意义时也可引导时间状语从句。例：Irecognizedherimmediately/instantlyIsawher.刚一见面，我就认出了她。IwenthomedirectlyIhadfinishedwork.我一干完活就回家了。Themachinewillstartinstantlythebuttonispressed.一按电钮，机器就立即开动起来。二、名词themoment,theminute,theinstant用于assoonas的意义时也可引导时间状语从句。例：Iwanttoseehertheminutethatshearrives.她一到，我就要见她。Wehadn’tmetfor20years,butIrecognizedhimthemoment(that)Isawhim.我们已经二十年没见了，可是我一见到他就认出他来。Irecognizedhimtheinstant(that)Isawhim.我一见到他就认出他来。三、名词theday,theyear,everytime,eachtime,nexttime,lasttime等也可用作连词，引导时间状语从句。例：HeleftEuropetheyearWorldWarbrokeout.Ⅱ第二次世界大战爆发那一年他离开了欧洲。Theday(onwhich)hewasinducted,hewasnotfeelingwell.被征入伍那天，他身体不大舒服。EverytimehephonesIalwaysseemtobeinthebath.每次他来电话时似乎我都在洗澡。Eachtimehecametotownhewouldvisitourschool.他每次进城都要到我们学校看看。Helookedmuchworried(the)lasttimeIsawhim.我上次见到他时他满脸愁容。TheverynexttimeIsawhershewasworkinginLondon.我再看到她的时候她正在伦敦工作。四、关联从属连词nosooner...than,hardly/scarcely/barely...when等也能引导时间状语从句。如果nosooner,hardly/scarcely/barely位于句首，就要用倒装语序。例：Hehadnosooner/Nosoonerhadhearrivedthanhewasaskedtoleaveagain.他刚到达就又让他离开。Wehadhardlybegun/Hardlyhadwebegunourwalkwhenitbegantorain.我们刚刚开始散步就下起雨来了。Shehadscarcelyentered/Scarcelyhadsheenteredtheroomwhenthephonerang.她刚进屋，电话就响了。Hehadbarely/Barelyhadhearrivedwhenhehadtoleaveagain.他刚刚到就又得走了。
