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 haven't seen each other for five years; he might not be interested in her any more.
他们已经5年没有见面了。他或许对她不再感兴趣了。
He just did his job in a matter-of-fact way and was not to be interested in gaining merit, but only in avoiding making mistakes.
他在工作上进取心不大，常常是不求有功，但求无过。