是in、生on、在u初nd步er是小学阶段应该掌握的基本介词,也小学接触英语时所遇到的基本知识点。很多教师认为这三个介词较为简单,因此只是简单地告诉了学生它们各自的意思和他们之间的区别。然而,这样的做法却无法有效地激发学生的学习兴趣,也无法帮助学生真正理解并掌握目标的知识点。本文将以译林版小学英语教材中in、on、under这三个介词的教inonunder Is in, born on, in the beginning of u u step er is the primary stage should master the basic prepositions, primary schools also encounter basic knowledge of English points. Many teachers think these three prepositions are relatively simple, so they simply tell students what they mean and what they differ from each other. However, such an approach can not effectively stimulate students’ interest in learning and can not help students to truly understand and grasp the knowledge of the target. This article will be in the primary version of the English version of the textbook, in, on, under the premise of teaching inonunder