top前面用什么介词

！top前面用介词on，on top 中文意思是，在上面领先成功

The ceiling suddenly caved in on top of them.天花板突然塌落在他们身上。

She remained on top for the rest of the match在比赛的余下部分她一直领先。

Books were piled on top of one another.

书籍一本一本地摞在一起。

前面用介词on，例如：

1、How will I ever get on top of all this work?我究竟怎样才处理得了这么多的工作

2、All this extra work is getting on top of him.这么多的额外工作快使他吃不消了。

3、She piled the boxes one on top of the other.她把盒子一个个地摞起来。