有的教师在讲课时,没有充分的备课,或者说是备课不全面,没有科学设计问题,所以时常会有这样的事发生,讲几句禁不住的话:“是不是”、“对不对”、“是什么呢”等这样的口头禅,问题没少问,但却没收到什么效果;有的教师课堂上很热闹,课堂气氛十分活跃,但问题却很肤浅。那么,如何有效构建具有生命力的课堂呢? Some teachers do not have enough lessons in lecturing, or they do not have comprehensive lesson preparation and no scientific design issues, so there are often such things that can not be said when they say something like “Is not it?”, “Right?” “, ” What is it? "Such mantra, the question no less asked, but did not receive any effect; some teachers in the classroom is very lively, classroom atmosphere is very active, but the problem is very superficial. So, how to effectively build a viable classroom?