I have not heard from him since writing last.

自上次写信以后，我没有接到过他的信。

《新英汉大辞典》

A: I have not heard of that.

答：我们没有听说这一事件。

youdao

I have not heard about the Oil Minister's visit.

我没有听说沙特石油矿产资源大臣访华的消息。

youdao

So, I have not heard whether or not anyone stayed or what's the status there.

NPR: Hurricanes Wreak Havoc In Haiti And Cuba

As I said to Kevin, I have not heard discussions about that in here today.

WHITEHOUSE: Press Briefing

Israel and Lebanon, who've signed off on it, and Hezbollah, and I have not heard from them.

NPR: U.N. Resolution Points to Peace in Lebanon