●對道歉的回答
    ◎沒事兒。/別放在心里! That's all right. *有時連寫成That's alright.
    I'm sorry. (對不起。)
    That's all right. (沒事兒。/別放在心里!)
    = Don't worry about it.
    = Don't worry.
    = It's no big deal. (不是什么大不了的事。)
    = Never mind.
    I forgot to bring your book. (我忘了把你的書帶來了。)
    Never mind. (不必在意。)
    ◎下次要多加小心。 Please be more careful next time.