例子：

　　1.興趣;關注;愛好

　　I developed an interest in the machine.

　　我對這機器發生了興趣.

　　I have lost my interest in chemistry.

　　我對化學已不感興趣.

　　2. 趣味性(+to)

　　Local color added interest to the novel.

　　地方色彩增加了這部小說的吸引力.

　　3. 感興趣的事物或人（這是就可數）

　　His two great interests in life are music and painting.