I asked why he was so late .------宾语从句
What you said is right?-----主语从句
Tell me what you are good at.-----宾语从句
The man who I saw is called Mr.Smith.------定语从句
Where is the book which I bought this morning?-------定语从句
He fighted me because I was new.------原因状语从句
It's true that he has returned home.-------主语从句