1.how often 多久一次　　

26. Mr. Smith collected stamps 8 years ago.(用现在完成进行时改写)

　 Mr. Smith ________ _________ _________ stamps since 8 years ago.

25. Have you ever been to an amusement park?

　 _________, __________ _________.(作否定回答)

24. He’s never seen the film before, _______ _______?

23. Open the door please, __________ ________?

22. You aren’t a worker,________ __________?

21. It’s going to rain, _________ __________?

20. He should come to school on time.

　 __________ ____________ he _______?

E.完成反意疑问句

19. He’ll be back in a week.

　 ________ ________ will he be back?

18. I have been learning Chinese for 10 years.

　 _________ __________ _________ you been learning Chinese?