has 是have的三单形式.所谓三单,就是第三人称【他她它】的单数形式.如果是我【第一人称】和你【第二人称】就用have比如.I have a pen.【我有一支笔】You have a pen .【你有一支笔】He has a pen.【他有一支笔.】如... has 是have的三单形式.所谓三单,就是第三人称【他她它】的单数形式.如果是我【第一人称】和你【第二人称】就用have比如.I have a pen.【我有一支笔】You have a pen .【你有一支笔】He has a pen.【他有一支笔.】如...