2014年秋人教版九年级英语unit5section a-1 课件.ppt

被动语态基本用法 当句子的主语是动作的执行者时，谓语的形式是主动语态。当句子的主语是动作的承受者时，谓语要用被动语态。被动语态由助动词be+过去分词构成，时态通过be表现出来。 be + Vp.p(动词的过去分词） 1)be 动词可以随时态人称的变化而变化 am/ is / are + V(过去分词） was/ were+ V(过去分词） will be + V(过去分词） 情态动词+ be + V (过去分词） He plants trees in spring. 主 谓 宾(受动者) Trees are planted by him 改为被动语态 in spring. 1.They make shoes in that factory. 主语+及物动词+宾语 Shoes are made (by them) in that factory. 一般现在时： S(主语）+am/is /are +过去分词 His brother washes bowls every day. 主 谓 宾(受动者) Bowls are washed by his brother every day. 1. Usually computers _______ (use) to get information on the Internet. 2. I ________ (ask) to clean my bedroom every day by my mother. 3. Trees __________ (plant) in spring. 4. The brown desk _______ (make) of wood. are used am asked are planted 用所给动词的正确形式填空。 is made 1. I wash dishes every day. (改为被动语态)。 _______ ______ ______ by me every day. 2. Most of the farm work is done by machine in the USA. ( 改为一般疑问句) 3. French and English are spoken in Canada. (对划线部分提问)。 ______ _______ ______ ______ in Canada? Dishes 句式转换。 are washed Is most of the farm work done by machine in the USA? What language is spoken 1.People use knives for cutting things. Knives ______ ______ for cutting things. 2.The students clean the windows of their classroom twice a month. The windows of their classroom______ _______ twice a month. are used are cleaned (变被动语态） * * * * Unit 5 What are the shirts made of? Section A What are these things? Say the names in English. stamp window What are these things? Say the names in English. fork coin shirt cotton What are these things? Say the names in English. blouse ring ring silver blouse silk fork steel stamp paper coins gold window glass chopsticks wood What are these things usually made of? It is made of … / They are made of … What’s the window made of? It’s made of glass. What’s the coin made of? It’s made of gold. What’s the stamp made of? It’s made of paper. What’s the fo