study作書房可數嗎

　　That evening we sat together in his study.

　　那天晚上我們一起坐在他的書房里。

　　Quite a lot of South Americans study here.

　　相當多的南美洲人在這里學習。

　　Children are hard at work in the study hall.

　　孩子們在自習室里刻苦學習。