一般现在时的被动语态ppt课件.ppt

一般现在时的被动语态,重点:掌握被动语态的基本结构及主动语态与被动语态之间的转化,孙悟空 打 白骨精 (执行者) (谓语动词的主动形式) (承受者),白骨精 被 孙悟空 打 (承受者) (执行者),examples,Students clean the classroom. 动作执行者 谓语动词主动形式 动作承受者The classroom is cleaned by students. 动作承受者 谓语动词被动形式 动作执行者,被动语态的结构:be + V-ed(动词过去分词),We clean the classroom. v.The classroom is cleaned by us. be+V-ed,同步练习一Tom makes the kite.(主动语态)She waters flowers.(主动语态),主动语态转换被动语态 1. 带双宾语的谓语动词(若将间接宾语转化成主语,则保留直接宾语. 若将直接宾语转化成主语,则在被保留的间接宾语前加介词to 或 for.)如: She gives me a book. A book is given to me by her. I am given a book by her.即刻操练: Her father buys her a new bike. A new bike is bought for her by her father.She is bought a new bike for her father.,为什么用被动语态? 1. 强调动作的承受者. Chinese is spoken by more and more people. 2. 不知道动作的执行者是谁. This watch is made in China. 3. 没有必要指出动作的执行者是谁. More trees are planted every year.,2. 变被动语态后的动词形式的选择主动句中, 动词see, hear , watch , notice和使役动词make , let, have后跟省略to 的不定式, 变为被动句时,应加上不定式符号to.如: He makes the girl stay at home. The girl is made to stay at home by him.练习: We often hear her sing in English. She is often heard to sing in English.,3.主动形式 表被动意义的词:a. 某些感官动词如look, feel, smell, sound, taste如: The coat feels soft.b. 某些及物动词+副词如: The pen writes smoothly.练习:1) The song _ (听起来) beautiful.2) The book _(卖) well.,课后练习,句型转化:More and more foreigners speak Chinese in the world now. Chinese_ _by more and more foreigners in the world now.单选:1. English_ in many countries.A. is speak B. is spoke C. is spokenD. is speaking2. The trees in our school_every Friday afternoon.A. are watered B. are watering C. has watered D. were watered3. These words_ in everyday English.A. are often used B. used often C. often are used D. often use4. History is made_people.A. from B. in C. of D. by5. You may watch TV as soon as your homework .A. finishes B. is finished C. finished D. will be finished,The kite is made by Tom.(被动语态),Flowers are watered by her.(被动语态),