Unit 2 Be sporty,be healthy 语法一览 核心语法：现在进行时和现在完成时的被动语态 现在进行时的被动语态表示某动作正在被执行。如： A new library is being built in our city. Some of the buildings are being repaired. 现在进行时的被动语态结构为is/am/are being done,可用by引出动作的发出者。如： Living conditions are being improved. An experiment is being done by the students in the lab. 现在完成时的被动语态表示动作已经被完成。如： All possible answers have been considered. What can be done has been done. 4.现在完成时的被动语态结构为has/have been done,可用by引出动作的发出者。如： My hometown has been completed. The rooms have been cleaned by the children. 语法专练： 一、用所给动词的正确时态和语态填空。 1 -Is there anyone in the next room -Yes, a new applicant _____(interview) there. 2 -What preparations have you made for the party -Invitation cards_____(send) to our friends and a big cake _____ (order). 3 -Why so slow -The road ahead_____(widen) and only one lane is available. 4 -Can I use your bike -Sorry,I had a fat tyre five minutes ago and it_____ (repair) now. 5 -Are you still working on your project -No. Actually, it _____ (complete). 6 -Having a haircut is really boring. -I usually read a magazine while my hair _____ (cut). 7. Look! The road _____ (repair) by the workers. It will be open next week. 8. A new hospital _____ (build) in our hometown now, so we have to take a detour (绕行). 9. My car _____ (clean) at the moment. I can pick you up in ten minutes. 10. So far, many new buildings _____ (set up) in our school to provide better living conditions for students. 11. The problem _____ (discuss) heatedly in the meeting room right now. Please wait for a moment. 12. Lots of tests _____ (carry out) by the scientists to find a cure for the disease recently. 13. The environment _____ (damage) seriously by industrial waste in the past few years. 14. Be quiet! The baby _____ (rock) by his mother in the next room. 二、句型转换。按要求改写句子，保持原意不变。 1. People are planting trees along the river. Passive (Present Continuous): Trees _____ _____ _____ along the river. 2. The company has produced a new type of electric car. Passive (Present Perfect): A new type of electric car _____ _____ _____ by the company. 3. They are not using the computer room today. Passive (Present Continuous Negative): The computer room _____ _____ _____ today. 4. Teachers have given students a lot of homework. Passive (Present Perfect): Students _____ _____ _____ a lot of homework by teachers. 三、单项选择 1. — Hi, Toby. Your shoes are so dirty. — Sorry, mom. They _____ because I was playing basketball in the mud. A. are being cleaned B. have been cleaned C. are being mud D. have mud 2. The construction of the new bridge _____ successfully, and it is expected to open to traffic next month. A. has been completed B. is being completed C. is completed D. has been completing 3. Don't bother Dr. Lee now. He _____ an important experiment in the lab. A. conducts B. is being conduc ... ...
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