When he was a little lad, I used to sing him lullabies.在他小时候, 我常常给他唱摇篮曲.All mothers like to sing lullabies to their babies.所有的母亲都喜欢给她们的孩子唱摇篮曲.She is singing lullabies to the children.她在为孩子唱催眠曲....