时间状语从句 He was about to leave,When the phone rang.
地点状语从句 Where there is a will,there is a way.
原因 Since no on is against it,we will pass it.
条件 If it doesn't rain tomorrow,we will go there.
目的结果 He always study so hard that he may make great progress.
让步 Although he was tired,he went on working.
比较 This film is more interesting than that one.