She pretends to be interested in opera, but it's only for show.

　　她做出一副對歌劇感興趣的.樣子，但這不過是裝門面而已。

　　I thought she might be interested in Paula's proposal

　　我覺得她對葆拉的提議可能會感興趣。

　　They haven't seen each other for five years; he might not be interested in her any more.

　　他們已經5年沒有見面了。他或許對她不再感興趣了。

　　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.

　　他在工作上進取心不大，常常是不求有功，但求無過。