I have a book.You have a book.We have some books.They have books.Mary and Tom have sons.Students have books.have 和 hasHe has a book.She has a book.It has four legs.Mary has a book. 总结:主语是第一人称,第二人称 ,第三人称复数,2个人用have主语是第三人称单数,1个人用has助动词助动词:帮助动词构成一般疑问句,肯否回答和否定句do doeshave 的一般疑问句Do you have a book?Do you have a book?Do you have some book?Do they have books?Do Mary and Tom have sons?Do students have books?I have a book.You have a book.We have some books.They have books.Mary and Tom have sons.Students