be interested in后加什么詞性

be interested in后面加名詞，代詞賓格或者加動(dòng)名詞，即動(dòng)詞的ing形式。
例句：
Would you be interested in auditioning?
你有興趣試鏡嗎？
Id certainly be interested in doing that.
我當(dāng)然有興趣這么做。