as time went by 也可说成 as time passed by，意思是“随着时间的流逝（推移）”，其中的 time 表示“时间”，为抽象名词，在此表泛指，故其前不用冠词。又如：
As time went by, things improved.
As time went by, their marriage turned sour.
Their marriage got better as time went by.
As time went by, people’s attitudes slowly changed.
As time went by we saw less and less of each other.
As time went by we saw less and less of each other.