新概念英语2-Lesson-21-Mad-or-not

1、精品exercise for lesson 21mad or not?a.用被动语态改写下列句子。e.g.the students keep their belongings in the cupboard under their beds.the student s belongings are kept in the cupboard under their beds.exercise1. the president of the university welcomed the new students and their parents in a short opening speech

2、.2. the department holds meetings every tuesday afternoon.3. the mechanic （技工） has replaced（替换）the flat tyre（轮胎）.4. they will give her a driving licence after a month s training.5. they had checked all the windows in the house.6. the shop keeper closed the door after i went into it.7. they may ask y

3、ou a lot of personal questions.8. the boss will probably give you some difficult jobs on your first day.9. they will most likely to require you to do a written test.10. someone has stolen the luggage i bought last week.b.根据括号内提供的信息，用被动语态回答下列问题。e.g.does the department hold meetings regularly? (every

4、tuesday afternoon)yes, department meetings are held every tuesday afternoon.exercise1. does the noise drive many people away? (yes)2. do people ask him why he enjoy fishing? (yes)3. who served helen in the restaurant? ( a young man with dark hair)4. where did you keep your jewellery? ( in the safe)5

5、. has anyone opened the front door? ( my brother)6. how many times does someone empty the mail box in a day? ( three times a day)7. will we have to collect letters from the post office ourselves?8. what are they repairing at the moment? ( the piano)9. should passengers throw away their tickets after

6、 checking in? ( no, inspectors may check them during the journey)10. where might i find the umbrella i left on the bus? ( in the lost and found office)c.将下列通知改为被动语态。e.g.passengers should wear seat belt during the journey.seat belts should be worn during the journey.orpassengers are requested to wear

7、 the seat belt during the journey.exercise1. workers mustn t drink alcohol in working hours.2. you must keep dogs on a lead(狗绳)in the gardens.3. english major students should speak english in class.4. workers mustn t smoke in the workshop.-可编辑-精品5. staff workers should make private telephone calls from the office.6. remind students to wash their own dishes after dinner.7. residents are not to park their cars in front of the main entrance.8. they are not to stay up l