It is necessary to make preparetions for an interview.__Having__ the answers ready will be of

问题描述:

It is necessary to make preparetions for an interview.__Having__ the answers ready will be of
great help.为什么填having?

因为这里是动名词做主语的用法.Having__ the answers 中having是have的动名词形式,在这里Having__ the answers 是主语
所以是动名词做主语
动名词就是非谓语动词的一种