2015届中考英语语法被动语态专题复习.ppt

2013年中考专项复习 Passive voice 中考说明： ★掌握一般现在时、一般过去时 、一般将来时和带有can，may，must等情态动词的被动语态的构成和基本用法。 学习目标 一.掌握被动语态的用法 二.掌握如何将主动语态变成 被动语态 三.变被动语态时须注意哪些问题 一.英语的两大语态：主动语态和被动语态 A.主动语态中主语是谓语动词的发出者。宾语是谓语动词的对象。 B.被动语态中主语是谓语动词的承受者(动作的对象)。 被动语态的谓语核心构成:　助动词be＋动词过去分词 什么时候要用被动语态呢？ 在下列三种情况之一要用被动语态： ①不知道动作的执行者是谁，用被动语态。 ②没有必要指出谁是动作的执行者，用被动语态。 ③需要强调动作的承受者时，用被动语态 观察下列句子并总结. 1.Many trees are cut down. 2.Waste is thrown away. 3.The air is polluted. 4.Waste water is poured into rivers. 5.Wild animals are killed…… Sum up the similarity(共同点): 一般现在时的被动语态: am/is/are+过去分词 Exercise: The bottle _________ (fill) with hot water.瓶子里装满了热水。 2. Cameras ________ (use) for taking photos.相机是用来照相的. 3.The classroom is very clean and it __________ (clean) by us every day. 4.The toys in the supermarket ________ (make) in China. 5.Beijing is a beautiful city and it _________ (visit) by many people every year. ANSWERS: 1._____________2. _____________ 3. _____________4. _____________ 5. _____________ 观察下列句子并总结. 1.The vegetables were cut by Ted. 2.The food was cooked by Lily. 3.The dishes were washed by Lily. 4.The table was wiped by Ted. 5.The kitchen was cleaned by them two. Sum up the similarity: 一般过去时的被动语态: was/were+过去分词 Exercise: 1.A new machine _______________ (invent) last month. 2.They ___________ (ask) a question by the teacher yesterday. 3.The book _____________ (write) by Guo Jinming last year. 4.Our school has a long history. And it ___________ (build) in 1958. 5.Many students ___________ (send) to America to study by our school last year. ANSWERS: 1._____________2. _____________ 3. _____________4. _____________ 5. _____________ 观察下列句子并总结. 1. Some new buildings will be built soon. 2. More important meetings will be held here. 3. It will be visited by many people. 4. It will be loved by more and more people. 5. We bel