Question

my friend has blue eyes改为一般疑问句并作否定回答该怎么改

Answer 1

含有实义动词的句子改为一般疑问句，需要借助助动词
句中主语是第三人称单数形式，所以助动词用does
故答案为：Does your friend have blue eyes?
否定回答模板：No,主语加助动词否定形式
故此句否定回答为：No,he/she doesn't.

Answer 2

行为动词has作谓语变一般疑问句加入助动词does

Does your friend have blue eyes?
No ，he doesn't.