Duì yǐhūn fùnǚ shénme chēnɡhu?
False: 对已婚妇女什么称呼?
Duì yǐhūn fùnǚ zěnme chēnɡhu?
True: 对已婚妇女怎么称呼?
“什么”是指代人或事物的,不能放在动词(“称呼”)之前作状语。这里是询问称呼方式,应当改用“怎么”。
什么 refers to persons or things. It can not premodify verbs(such as 称呼) as an adverbial adjunct. Here is a question of how to address people. Thus the proper word is 怎么.