(that)you don't like him is none of my business为什么不是whether what who

(that)you don't like him is none of my business为什么不是whether what who
(that)you don't like him is none of my business为什么不是whether what who

(that)you don't like him is none of my business为什么不是whether what who
(that)you don't like him is none of my business 你不喜欢他不关我的事
这个句子中,可以这样理解,把you don't like him这个插入语拿掉,
?is none of my business.缺主语,用what是缺宾语,这句子不缺宾语,who是谁,完全行不通,whether是引导条件状语从句里用的,用这三个词都不能使之成为一个独立完整的句子,只有用that

That is none of my business.而you don't like him是来补充说明that的