内容正文:
Book2 Unit5 On the Road
Period 3 Grammar——动词ing作定语
学习目标:
1. 识别并掌握动词-ing在句子中作定语
2. 熟练运用动词-ing于填空和写作
学习重点:
动词-ing在语境中的具体运用
易混易错知识:动词-ing作定语和定语从句
情境感悟:
①They talked in low voice in order not to wake up the sleeping girl.
②The student making the experiment in the lab is our monitor.
③ She found herself in an embarrassing position.
④They built a highway leading into the mountains.
句①③为动词的ing形式单独作_________,放在_____________。
句②④为动词的ing形式短语作_____________, 放在______________。
语法精讲:
一、作用
1. v. -ing作定语起名词的作用, 表明被修饰名词的作用、用途等。表示“供……之用”, 相当于used for doing。
*building materials = _______________建筑材料
*a walking stick =_________________ 手杖
2.作定语的及物动词的现在分词形式为doing和being done。
当被修饰的名词与分词之间为主动关系时,用doing;
当被修饰的名词与分词之间为被动关系且表示动作正在进行时,用being done;并且可换成相应的定语从句。
作定语的不及物动词的现在分词形式只有doing。
* the laughing audience欢笑的观众
→_____________________________________________________________.
* a sleeping boy正在睡觉的男孩
→_____________________________________________________________.
The meeting being held now is very important.现在正在举行的会议很重要。
→_____________________________________________________________.
3.1).单个的词作定语,放在被修饰名词的前面。
* They set up an operating table.他们搭起一个手术台。
* A rolling stone gathers no moss.滚石不生苔。
* That must be a terrifying experience.那肯定是一次可怕的经历。
* The experiment was an amazing success.
那个实验是一次惊人的成功。
2) .动词-ing短语作定语时,放在所修饰的名词之后
*They lived in a room facing the street.
*The man standing there is Peter's father.
4.有些-ing 形式已经转化成形容词,常做定语用来修饰物,表示“令人.....”。常用的此类词有:exciting,amusing,amazing,astonishing,shocking,puzzling,confusing,disappointing,discouraging,pleasing,striking,boring,tiring,touching,moving,
interesting,satisfying,terrifying,frightening 等。如:
*That must have been a terrifying experience.那准时一段可怕的经历。
*The experiment was an amazing success.那项试验是一个惊人的成功。
*There is a page missing from this book.这本书缺了一页。
【易错精点】
(1)表示正在进行的动作(变为从句时要用进行时态)。
*Tell the children playing there not to make so much noise.
→_____________________________________________________________..
告诉在那儿玩的孩子不要发出这么大的噪音
*Di