一、案例背景《燕子专列》描述了一个真实而感人的故事:1990年春天,北飞的燕子路过瑞士时,瑞士境内气温骤降,成千上万的燕子濒临死亡。瑞士政府开设专列把燕子送到温暖的地方,瑞士人也纷纷投入到救助燕子的行动中。课文题目很抢眼,“专列”作为一个专用词语,三年级的孩子对它的 First, the background of the case “Swallow Trains” describes a real and touching story: the spring of 1990, North Flying swallows passing through Switzerland, the temperature in Switzerland plummeted, tens of thousands of swallows on the verge of death. The Swiss government set up a special train to send swallows to warm places, the Swiss have also been involved in the rescue swallows. Text is very eye-catching topic, “train” as a special term, third-grade children to it