英语常见的时间状语是什么?

for+时间段 ,since+时间点 ,by+将来的时间 ,lately；recently,just,up to now,till now,so far,these days,in the past few years／months／weeks／days ,yesterday；last week；in 1945,at that time；once；during the war；before；a few days ago；when,used to+动词原形,be／become／get used to+动名词doing,before,after,by,up till ,will do.will be doing,have been doing

when, while,

1、时间状语
eg. When the film ended, the people went back.
2、地点状语
eg. You are free to go wherever you like.
3、原因状语
eg. As it is raining, we shall not go to the park.
4、目的状语
eg. I'll speak slowly so that you can understand me.