favourite subject的用法和樣例：
例句
- Father always fetches the conversation round to his favourite subject.
父親總是把談話轉到他最喜愛的話題上來。 - Oh dear, he's off again on his favourite subject. Isn't there any way of stopping him?
天哪，他又在絮絮不休地談他感興趣的問題。有沒有法子使他閉嘴？ - Chemistry was her favourite subject at school.
她上學時最喜歡化學。 - Which is your favourite subject?
你最喜歡哪個科目?
