著名教育家叶圣陶先生说:“教师之为教,不在全盘授予,而在相机诱导。”所谓相机诱导就是适时适地的有效性的启发思维、有效的课堂提问。新课改带来了新的学习方式,教师的问和学生的答密切相关,形成了师生共同体。教师是师生活动的主导者,学生是师生活动的主体。恰当的提问能激发学生的兴趣,从而很好地提高课堂效率。 Mr. Ye Shengtao, a famous educator, said: “Teachers are taught, not granted in a comprehensive way, and are induced in the camera.” The so-called camera-induced thinking is timely and effective, inspired thinking and effective classroom questions. New curriculum reform has brought new ways of learning, teachers 'questions and students' answers are closely related to form a community of teachers and students. Teachers are the dominant teachers and students in activities, students are the main body of teacher and student activities. Proper questioning can arouse the interest of students, so as to improve classroom efficiency.