【has】have和has在什么情况下用?怎么区分?

网友回答

【答案】 第一人称（我）、 第二人称（你）+have:（陈述句）I have a pen.（疑问句）Do you have a pen?
　　第三人称单数（他她它）+has:（陈述句）He has a pen.（疑问句）Does he have a pen?
　　第三人称复数（他她它们）+have:（陈述句）They have a lot of pens.（疑问句）Do they have a lot of pens?
　　所有的过去式都+had:（陈述句）I had a pen,but i lost it.（疑问句）Did you have a pen?
　　过去完成时第一二人称+have had:（陈述句）I have had a pen.（疑问句）Have you had a pen?
　　过去完成时第三人称单数+has had:（陈述句）He has had a pen.（疑问句）Has he had a pen?
　　过去完成时第三人称复数+have had:（陈述句）They have had a lot of pens.（疑问句）Have they had a lot of pens?