Her husband is the kind of man who is always happy and has n
Her husband is the kind of man who is always happy and has never to have any trouble分析语法
重点翻译who is always happy and has never to have any trouble的语法结构
是不是 to have any trouble 做 has never 的宾语
has to是不是不可以 理解为 不得不 的意思