【人教版】高中英语必修四 Unit 3 A taste of English humour grammar.pptx

;Revision;4. I suggest bringing the meeting to an end. ;;1. 单个动词的-ing形式作定语位于被修饰名词的前面，既可以表示被修饰者的作用或功能，也可以表示被修饰者的动作或状态。 building materials = materials for building 建筑材料 a swimming pool =a pool for swimming 游泳池 ;drinking water = water for drinking 饮用水 a walking stick = a stick for walking 手杖 a reading room = a room for reading 阅览室 a writing desk = a desk for writing 写字台; tiring music = music that is tiring 烦人的音乐 a surprising result = a result that is surprising 一个惊人的结果 the speaking man =the man who is speaking 正在说话的男人 the sleeping student =the student who is sleeping 正在睡觉的学生;2. -ing形式短语作定语时, 放在所修饰的名词之后, 并且在意思上相当于一个定语从句。; 3. -ing形式短语也可以用作非限制定语，相当于一个非限制性定语从句，这时，它与句子其他部分用逗号分开。 His brother, working as a teacher, lives in Beijing. = His brother, who is working as a teacher, lives in Beijing. 他那个当教师的哥哥住在北京。;-ing形式作表语时放在系动词之后，用来泛指某种动作或行为，以说明主语的身份、性质或情况。在这种情况下,主语和表语通常是对等的关系,可互换位置。 Her hobby is painting. 她的业余爱好是画画。 My job is looking after the children. 我的工作就是照顾这些孩子。;The police’s job is keeping public order. 警察的工作就是维护公共秩序。 Keeping the money you pick up is stealing. 留下你捡到的钱就是偷。 ;(2)动词-ing形式做表语是用来表示主语所具有的特征,有的已变成了形容词,主语和表语位置不能互换。 My son is always disappointing, for he never lives up to my hopes. 我儿子总是令人失望,他总是辜负我对他的希望。 The politician is good at lectures and he is very inspiring. 那个政治家很擅长演讲,他很有感召力。;1. 1) 动词-ing形式作宾语补足语常放在宾语后面，表示一个正在进行的主动性的动作，强调一个过程或一种状态。如： When we returned to the school, we found a stranger standing at the entrance. 当我们回到学校时, 发现一个陌生人站在大门口。; We found the snake eating the eggs. 我们发现蛇正在吃鸡蛋。 I found a bag lying on the ground. 我发现地板上放着一个包。 The boss kept the workers working the whole night. 那老板让工人整夜地工作。; 2）当主句转换为被动结构时, 原来作宾语补足语的动词-ing形式便转换为主语补足语。如： They found the result very satisfying. = The result is found very satisfying. 这个结果很令人满意。; They heard him singing in the next room. = He was heard singing in the next