判断下列是什么从句,并说明原因

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 bou...原因。。。。I （主语）asked （谓语）why he wasso late （宾语）.
What you said（主语） is （系动词）right（表语）?
Tell（谓语） me （间接宾语）what you are good at（直接宾语）.
The man （主语）who I saw（定语） is called Mr. Smith.
Where is the book（主语） which I bought this morning（定语）?
He fighted me （主语部分）because（连接词） I was new（从句部分）.
It（形式主语）'s（系动词） true（表语） that（主语从句连接词） he has returned home（真正主语）.