精选优质文档-倾情为你奉上Period IV Grammar(必修4，unit4)Teaching aim: Grasp the usages of -ing form used as the attributive and the adverbialI. Preparation for the grammar by oneself before class.自学探究 （SB P29 Discovering useful structures）II. Students work together to make a thorough inquiry during class.合作学习STEP1.现在分词作定语现在分词及其短语可以在句子中作定语，其作用相当于一个定语从句。其动作和谓语动词同时发生，与其修饰词之间是主动关系，也就是说现在分词的动作就是它修饰的那个词的动作。1现在分词作定语时的位置（1）现在分词作定语时多置于它所修饰的名词之前；分词短语用于它所修饰词的后面。例如：He is an attacking player
