今天我们要学的词是back-to-school。 Back-to-school, 返回学校，其实就是指假期结束，要开学了。 “Many stores have back-to-school promotions in August,” 很多商店都会在八月份新学期开始前推出商品促销活动。 “Students need to buy school supplies according to the back-to-school list,” 学生们要根据学校老师发的单子，购买学习用具。 “So, have you done your back-to-school shopping yet?” 那么，新学期需要的东西，你都买全了吗？好的，今天我们学习的词是back-to-school…