目标 1. knowledge aims: learn and grasp the rules of the infinitive 2.ability aims: to master the usage of the infinitive 重点 1. to master the rules of the infinitive 2 .learn and master some special pattern followed the infinitive 我的问题难点 the use of the infinitive 自主学习 快速在课文中画出含有不定式的句子，并观察其用法 。
