Have的否定式疑问

问题描述:

Have的否定式疑问
我现在have的否定就3种表达形式,do(does)not have \ have no \ have not,请问这3种表达形式有啥说法不?

do(does)not have have作为实义动词时的用法,如:I don't have lunch.have no 后接名词,如 We have no classes today.have not 现在完成时态中作助动词,如:I haven't finished my homework yet....