be interested 后加什么？
加名词be interested in sth表示对某事感兴趣 ; 对某物感兴趣 ; 对……感兴趣；
加动名词be interested in doing sth 有兴趣做某事
例句
She pretends to be interested in opera, but it\'s only for show.
她做出一副对歌剧感兴趣的样子，但这不过是装门面而已。
I thought she might be interested in Paula\'s proposal
我觉得她对葆拉的提议可能会感兴趣。
They need to be interested in what you\'re doing too.
他们也会有兴趣关注你的研究。
I thought you guys would be happy I was interested in doing this.
原以为你们会很高兴看到我对这个感兴趣。