As I just mentioned, he is forgetful, he always forgets some important things.
正如我刚才提到过的，他很健忘，经常忘记一些重要的事情。
As I just mentioned, housing price is a major concern of our country.
正如我刚才提到的，房价问题是我国一个主要关注的问题。
As I just mentioned, we should work more and talk less.
正如我刚才提到过的，我们应该少说多做。