樂于的用法和樣例：
例句
-
她總是樂于助人。
She is always ready to help others. -
他們都很樂于聽到這個令人高興的消息。
They all rejoiced to hear the happy news. -
學生應該樂于做艱苦的工作。
Students should be generous in doing hard jobs. -
你如果星期五兩點鐘有空的話，我非常樂于帶你去游覽那個地方。
If you're free at two o'clock on Friday, I shall he delighted to show yon around the place. -
這小家伙最樂于做的莫過于翻他媽媽的手提袋了。
Nothing delighted the small child more than turn out her mother's handbag.
