没有know to sb的用法!
有to make somebody or something known to sb的用法!
I will speak against anything I know to be wrong.
我会对所有我认为不对的事情直言不讳.
I don't know to what this relates.
我不知道这与什么有关.
What other ways do you know to add variety?
你知道其他增加变化的方法吗?
Make oneself known to sb.
向某人作自我介绍
Make sth. known to sb.
把某事（向某人）公布