Does he have a soocer ball.改为肯定陈述和否定陈述.

He has s soocer ball.
He doesn't have a soocer ball.
or:He hasn't a soocer ball.Does he have a soocer ball.第三人称单数不是应该用has的么？为什么用have？还有肯定陈述为什么是has？否定陈述又变成have了？谢谢！He has s soocer ball. 主语He是单数第三人称，谓语动词用have的第三人称形式：has。就如同其它行为动词加s一样。如：We see with our eyes.He sees with his eyes.第三人称时，see后加s。He doesn't have a soocer ball.一个简单句子中，谓语动词部分如果有几个动词组成，第三人称只要将第一个动词改成第三人称就可以了。如：We go to school every day. We don't go to school every day.He goes to school every day.He doesn't go to school every day.doesn't表示第三人称的否定。or: He hasn't a soocer ball.　have是个特殊的动词，当它表示“有”时，"它的否定和疑问句有两种。即：don't have或haven't；doesn't have或hasn't(第三人称时)　Do they have.....或Have they.....；Does he have....或Has he ....。