陕西省榆林育才中学高中英语 Unit 3 Under the sea 语法导学案 新人教版选修 7一 学习目标：1 掌握 v-ing 的被动形式，并会熟练运用(重点)2 能正确说出 v-ing 在句中所做的成分。二 学习内容：v-ing 的被动形式V-ing 形式由 “do＋ing” 构成，其否定形式是 “not doing”, V-ing 可以带宾语或状语构成 V-ing 短语，没有人称和数的变化，但有时态和语态的变化。 语态时态主动语态被动语态一般式(not)doing(not)being done完成式(not)having done(not)having been done自主学习现在分词的用法 一、现在分词可在句中作定语、表语、补足语和状语。1. 作定语 现在分词作定语时多置于它所修饰的名词前 : This is a pressing question. 这是一个紧迫的问题。 He asked an embarrassing question. 他提了一个令人难堪的问题。 现在分词亦可置于它所修饰的名词之后 : There were no soldiers drilling. 现在分词短语一般皆置于其修饰的名词之后 : A little child learning to walk often falls. The men working here are all from the rural areas.2. 现在分词用作状语 现在分词及其短语从表意的角度看 , 也可用作状语 , 表示 时间、原因、结果、条件、让步、方式或伴随情况等。其动作可能发生在谓语动词之前或之后 , 也可能与谓语动的动作同时发生。 ( 句子的主语就是分词的逻辑主语 ) (1)表示时间 Climbing to the top of the tower, we saw a magnificent view. Walking along the street, she saw a little girl running up to her.强调与谓语动词的动作同时发生时 , 现在分词之前可用连词 when 或 while: When leaving the airport, they waved again and again to us.While watching TV in the room, I heard someone knocking at the door.(2)表示原因1Being sick, I stayed at home.Knowing that he was tired, I told him to have a rest.(3)表示条件 Adopting this method, we will raise the average yield by 40 percent. Turning to the right, you will find a path leading to his cottage.(4)表示让步Admitting what she has said, I still think that she hasn't tried her best.(5)表示结果It rained heavily, causing seve...
