表示时间的连接词主要有:

at first 起初

next 接下来

then 然后

after that 那以后

later 后来

soon 不久

soon/shortly after ……之后不久

finally 最后

in the end 最后

eventually 最终

at last 终于

lately 近来

recently 最近

since then 自从那时起

after that 那以后

in no time 不一会儿

after a while 一会儿

afterward 后来

to begin/start with=in the first place 首先、第一点

immediately 立即、马上

meanwhile=in the meantime=at the same time 在此期间、同时

earlier, until now 直到现在

suddenly=all of a sudden 突然

as a young man 当…… 是个年轻人的时候

at the age of… 在……岁的时候

as early as 早……的时候

as soon as 一……就……

before, the other day 几天前

early in the morning 大清早

after/before dark 天黑后/前

one day 有一天

one afternoon 一天下午

one morning 一天早晨

注意:since then表从过去某一点时间延续至说话时,强调到目前为止一直进行的动作或者保持的状态。所以句中谓语动词一般用现在完成时或者现在完成进行时。例如:
1.After that he never passed any test.1.从那以后他任何考试都从未及格过。
2.After that they took more attention to the action.2.从那以后他们对我的行动更加关注了。
3.I have been working hard since then.3.从那以来我一直努力工作。
4.Since then he has been drawing a pension.4.从那时起他一直领退休金。
5.She 's been studying hard since then.5.打那儿起,她就用心念书了。
6.It had been intolerable to be with him since then.6.从此跟他在一起就如坐针毡。

as soon as 一般指未发生的动作,主句一般将来时,从句用一般现在时代替一般将来时。例如:
1.I will tell him the news as soon as he comes back.他一回来我就告诉他这个消息。
注:有时,为了特意表达刚刚完成某事就如何如何,需要用现在完成时.例如:
2.I will go with you as soon as I have washed my face.我洗完脸就和你一起去。
当as soon as指紧接着发生的两个短动作,主从句都用一般过去时。例如:
1.He took out his English books as soon as he sat down.他一坐下就拿出了英语书。
不过,我也见过从句和主句都用一般现在时的情况.例如:
2.As soon as he finishes his classwork,he runs out of the class.他一做完课堂作业,就跑出了教室.