4.He has a brother and a sister.(变为否定句) 可以写成 He has not a brother and a sister.
问题描述：
4.He has a brother and a sister.(变为否定句) 可以写成 He has not a brother and a sister.
答
He hasn't either a brother or a sister. 更好些。
答
He doesn't have a brother or a sister.
He has neither a brother nor a sister.
答
He has no brother or sister / He doesn't have brother or sister .
一定要记住在否定句中and要变成or.
答
不能
答
不可以,这里因为has是实义动词,所以变成否定句,得在前面用助动词does+not构成否定,即：He doesn't have a brother or a sister.
答
He doesn`t have a brother or a sister.