____ you Peter?这里为什么要用Are?

____ you Peter?这里为什么要用Are? you and i are good friends.这里为什么用are? Are you good at dangcing?这里的为什么要用Are? Are you peter How are you,Peter? Are you peter?回答 how are you getting along with your work?是什么意思 为什么这里要用gettin Hi Peter.Hi Sam._____ are you?I'm fine,thank you.______ ____ Are you peter?怎么应答 英语中you are right 这里为什么用are?用什么语法可以解释?you 后面都跟are吗? that's what you are good at这里为什么要加what?类似的还有you are what you Have you ever been to ____ West Park?这里要the吗?为什么?