I went to super market after you left my home.(你离开我家以后,我去了超市）以上一句为例,after在这一句中做连词,语境是一般过去时,after后面的动词也用一般过去时；当然after也可以做介词,所以上面一句话也可以...如果是after I study呢？如果是after I study, 就可以写为下面这种句子：
I went to play guitar after I studied English; (我学完英语以后去弹吉他了）
也可以是：
I went to play guitar after my studing English.
谢谢