江西省宜市中学高中英语 Unit 3 Computers Grammar（period 5）教学案 新人教版必修2.doc

江西省宜春市中学高中英语 unit 3 computers grammar（period 5）学案 新人教版必修2【要达成的目标】1. students know the present perfect tense.2. students can use the present perfect passive voice.【“教”与“学”过程】本堂课使用的电教手段 a projector task 1 individual work before class.1. preview grammar part: read grammar part in the reference book.2. compare the following sentences and tell the similarity and difference between them.1). we have finished all the exercises.2). all the exercises have been finished.3). tom has returned the book to the library.4). the book has been returned to the library by tom.5). we havent cleaned the classroom yet.6). the classroom hasnt been cleaned yet.conclusionthe similarity:_the difference:_the structure: active voice_ - passive voice _3. turn the following sentences into passive voice.1). the boy has sold out all the newspapers.2). have you found any way to make waste water clean?3). my parents have bought me a computer as a birthday present.task 2 individual work in class.go through the passage on page 18 and find out the structure in it: have been done. how many: _ what are they:【课后反思】（教师写成败得失和改进措施，学生写学习体会和存在的问题） task 3 finish ex 2 on page 21.task 4 finish ex 1 on page 57.task 5 finish ex 2 on page 57.check the answers in groups and make any correction if necessary.homeworkread the grammar part in the reference book again and correct the following sentences.1. the car has been lent me.2. the dictionary has been bought him by his brother.3. the old man has been looked well in the hospital.4. a solution has been thought to solve the problem.5. tom has been noticed smoke in the working hours.6. the workers have been made work at weekends.7. we knew each other since we were children.8. alex wrote six papers so far.9. my brother has bought the bike for two years.10. i have borrowed the book for one week.11. do you know how long i have become a teacher?12. they have got mar