They are ( )(interest)( )reading books..翻译并填空

空里应该填：interested in
所以原句是：They are interested in reading books。
翻译：他们对读书感兴趣。
这里考察的是一个短语be interested in。
要注意用法上的区别：be interested in:对.(某物)有兴趣，而be interested at:中意于(某人)
① interested是指“对…产生兴趣的，对…感兴趣的”，一般用人做主语，后常用介词in.

He was interested in biology before.他以前对生物感兴趣。
I’m not interested in art.我对艺术不感兴趣。
Women are always interested in fashions.女人总对时装感兴趣。

②interesting的意思是“有趣的”，指能够给人带来兴趣的某人或某事物。

He is an interesting old man.他是个有趣的老头。
The interesting story attracted me. 这个有趣的故事吸引了我。
It was interesting that he ran away! 有趣的是他跑了！

They are interested in reading books.
翻译：他们对读书感兴趣。
be interested in 对...感兴趣

They are ( )(interest)( )reading books
填的是interested in

be interested in
英[bi: ˈɪntrɪstɪd in]
美[bi ˈɪntrɪstɪd ɪn]
对…感兴趣;关心