U4Grammar.ppt

A The passive voice with model verbs water(浇水) 选择最佳答案填空。 ( )1. Your homework should ____ at once. A. do B. to do C. be done D. to be done ( )2. This coat ____ with water. You must dry-clean it. A. can not wash B. not can wash C. can be not washed D. can not be washed ( )3. These fruits must ____ in cool places, or they will get bad easily. A. keep B. be kept C. to be kept D. to keep ( )4. In the past few years, lots of buildings ____ in this city. A. have been built B. are building C. have built D. will build ( )5. So far, the Moon ____ by man a few times. A. is visited B. will be visited C. has been visited D. has visited ( )6. The flowers must ____ often. A. water B. be watered C. are watered D. be watering ( )7. These books ____ in the library for a long time. A. have kept B. are keeping C. are kept D. have been kept ( )8. — Can it ____ to make paper? — No, it ____. A. use, can’t B. be used, can’t C. is used, isn’t D. be used, isn’t ( )9. The panda may ____ to the zoo tomorrow morning. A. send B. sent C. be sent D. will be sent ( )10. Trees ____ in winter because it is too cold. A. not can be planted B. can be not planted C. can not be planted D. can not plant C B C 一：英语的谓语动词有两种语态 We speak English. 主语 谓语 宾语 English is spoken by us. 主语 谓语 宾语 宾变主,主变宾,前加by 主动语态 ?1. Tom broke the window.?? ?? The window was broken by Tom. ? 2. He broke the windows.? ??? The windows were broken by him. 被动语态的大体构成： Be + PP（过去分词） 1. They make shoes in that factory. 主语+及物动词+宾语 Shoes are made (by them) in that factory. 一般现在时被动结构： am /is /are +过去分词 He rides the motorbike to his factory every day. The motorbike is ridden to his factory every day. Exercise We call the snowman Mr Strong. The snowman is called Mr Strong. 2. They bought ten compu