主語(yǔ)是第一第二人稱(I,you)或者復(fù)數(shù)(we,they)時(shí),用have
主語(yǔ)是第三人稱(he,she,it)時(shí),用has
He has a pen.
一般疑問(wèn)句: Does he have a pen?
對(duì)劃線提問(wèn)（劃的應(yīng)該是a pen）: What does he have?
否定句： He does not have a pen.
注意主語(yǔ)是我(I)時(shí)的變化：
I have a pen
一般疑問(wèn)句: Do you have a pen?
對(duì)劃線提問(wèn)（劃的應(yīng)該是a pen）: What do you have?
否定句：I don't have a pen.
要把原句中的I換成you