介词不能引导状语从句,但介词加宾语从句可以充当状语,如何理解这两句话?

Considering what you have said, Iknow　who　is　right．(这个就是介词加宾语从句充当状语）而引导状语从句要用连词如when, where, how, When I was young, I always made my mom annoyed。