现在分词讲解以及练习课件(共30张PPT)

Grammar 现在分词 一:现在分词形式由 “do＋ing” 构成, 其否定形式是 “not doing”, 它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。 Grammar 现在分词形式 (1) (not) doing (not) being done (not) having done (not) having been done (2) 　语态 时态 主动语态 被动语态 一般式 完成式 现在分词一般式 (doing) : 表示与谓语动作同时 发生,或发生在谓语动作之后. 现在分词完成式 (having done ): 表示动作发生在 谓语动作之前,强调时间的先后关系. He went out , shutting the door behind him. Walking around the city, we were impressed by it’s new look. Having finished the letter, he went to post it. (3) 现在分词被动式: 一般式的被动式 (being done) : 如果现在分词的动作是被动的，且是正在进行或与谓语动词的动作同时发生，就用being done 完成式的被动式 (having been done ): 表示发生在谓语动作之前的被动动作. The building being built will be a store. Having been given such a good chance, how could he let it slip ? (4) 现在分词否定式: (not doing) Not knowing his address, we couldn’t get in touch with him. Not having received any letters from his son. the old couple felt worried. Not having been informed of the news, they didn’t attend the meeting. (5) 现在分词的基本用法： 现在分词形式在句中可以作: 定语,