作为 “有、拥有、所有、具有”的词义时：
He has a nice car.
否定形式有两种：1.He hasn't a nice car.
2.He doesn't have a nice car.
两种形式表达的语义没有任何区别.但这两种形式都被接受的情形只限于 have/has( 拥有、所有）这一个词的这一个词义上.任何其他行为动词都不可以同时有这样两种都被接受的否定形式,而只能是第二种形式.
have/has 是个多词性、多词义的动词.当它表达其他任何词义时,只能和普通的行为动词的否定形式一样：don't/doesn't/ didn't + have sth
e.g.He has classes on weekdays.（上课）
He doesn't have classes on weekdays.(correct)
不可说：He haven't classes on weekdays.
