表示过去的时间状语有哪些

如下：1、used to+动词原形，表过去经常但现在已不再维持的习惯动作。He used to smoke.他过去抽烟。2、be/become/get used to+动名词doing，表习惯于。He has got used to getting up early.他已经习惯了早起。3、过去进行时，表示过去某个时间点或某段时间内正在发生的动作。The boy was doing his homework when his father came back from work.男孩正在做他的家庭作业当他父亲下班回来。4、主句（had done）, before + 过去时间状语。He had finished his homework by 9 o'clock last night.昨晚9点钟他就做完作业了。