预习指导不仅适合单式班的教学,也适合复式班的教学,因为预习指导适合复式教学的特点。①从课堂结构看,一个教师不能同时向两个年级的学生授课,其中一个班级必须预习,为新授作准备。②从授课时间看,双级复式教学每个年级授课时间只有单式教学的一半,而要完成相同的教学任务, Preview guide is not only suitable for single-class teaching, but also for double-class teaching, because the preview guide for double teaching characteristics. ① From the classroom structure, a teacher can not teach to two grades at the same time. One of the classes must prepare for the new one. ② from the teaching time to see, double-level teaching each class teaching time is only half of single-year teaching, and to complete the same teaching tasks,