1.在学生“对话”受挫时讲授。随着课程改革的推进,对话教学已成为新课程倡导的课堂教学范式。但是由于学生在思维状态、学识和语言表达方面具有不稳定性,是不成熟的对话者,在对话中处于被动状态,有时还会造成对话的中断,使教师无法组织起有效的对话。为此,我们要求教师发挥主导作用,对学生相机进 1. Lecture when student “conversation ” frustrated. With the advancement of curriculum reform, dialogue teaching has become the classroom teaching paradigm advocated by the new curriculum. However, due to the students’ instability in the state of mind, knowledge and language expression, they are immature interlocutors who are passive in the dialogue and occasionally interrupt the dialogue so that teachers can not organize effective dialogue. To this end, we ask teachers to play a leading role in the student camera