Michael, of course, knew of my arrival．

参考译文(1)：迈克，当然，听说过我已到达/抵达。

参考译文(2)：迈克，当然，略有耳闻我已到达/抵达。

老师，of my arrival 是介词短语吗？of=about吗？

解答如下：

know of 听说过；略有耳闻 (英文解释：If you say that you know of something, you mean that you have heard about it but you do not necessarily have a lot of information about it.)

We know of the incident but have no further details.

我们听说过这件事，但对详情不是很清楚。

The president admitted that he did not know of any rebels having surrendered so far.

总统承认据他所知迄今为止还没有反叛者投降。