北京市大兴县黄村镇第一中心小学从1991年起在四年级开设英语课，但是通过几年的教学实践，他们发现，学生对教材内容接受起来很吃力，而且学了就忘，造成了英语又难学又难教的局面。于是他们从1997年起开始引进马承主编的科普版《小学英语》教材，实验他的“三位一体”教学法 Primary School of Huangcun Town No.1 Center, Daxing County, Beijing started English classes in the fourth grade since 1991, but after several years of teaching practice, they found that the students were having difficulty in accepting the contents of the teaching materials and forgotten to learn English. Hard to learn and difficult to teach the situation. So they started from 1997 to introduce the popular version of “primary school English” teaching materials, experimenting with his “Trinity” teaching method