时间状语从句连接词：when,while,as,before,after,as soon as,till,until,not…until,the first/second…/last time,the moment,the minute,the instant,immediately,directly,instantly,hardly…when,scarcely…when,no sooner…than
条件状语从句连接词：if,unless,now (that),as(so) long as,in case,on condition that,suppose/supposing,provided/providing