不可數名詞

你可以將名詞前放 "this" or "that", 看看意思是否通

e.g. rice 實物名詞
This rice is cook for my sister and me. 這句正確定這句 : The rice is cook for my sister and me. 正確
講d飯, 很明顯 "The rice" 是正確

e.g. happiness 抽象名詞
Money does not always bring that happiness. 這句正確定這句 : Money does not always bring happiness. 正確
"that happiness" 如果之前講得清楚是那種快樂, 例如親情的快樂 "that kind of happiness"會好過 "that happiness", 但後者都有人用。

老師講的可能是課程某些內容, 我不是教師, 並不理解教學課程, 但你要明白, 如果要應付考試, 你就要跟老師講啦, 因佢俾分你的, 不是其他人。

Hope it may help.
Happy Dragon Boat Festival.