has 是have的第三人称单数形式
都可以做行为动词,意思是"有",也可根据语境翻译成不同意思,也可做助动词用于现在完成时态中
如
I have a book.我有一本书。
He has a book, too.他也有一本书。
He often has breakfast at home.他经常在家吃早餐。
We have seven lessons every day.
我们每天有七节课。
Look !They are having an English lesson now.
瞧!他们正在上英语课。
They have been to Beijing.
他们去过北京。
Lucy has finished her homework.
露西已经完成了作业。