关系词引导哪些从句各做什么成分That/Which/What/When/Where/Whateve...答:3. 引导英语状语从句的关联词有if, unless, whether, when, where, how, before, after, until, once,till,as if, as though, so that,in order that, whenever, wherever, however, as, since, though,although,no matter+疑问词, because, as long as, as soon as,now that,in ...