after后跟什么时态?

after conj.(时间)后,在后,在…之后,后于,迟于：eg.1.I played computer games after I had finished my homework.做完功课后,我玩电玩．(从句的动作发生在主句的动作前,因此,主句用一般过去式,从句用过去完成时．)2...