2. Henry got injured in the accident which was happened yesterday.　　　　 　　　　　　　　　 　　　　

1. English is not easy to be learnt.　　　　　　　　　　　　　　　　　 　　　　　　　　　　　　　 　　

20. join the league→has been a league member or for two years→two years ago

　动词语态2

17. has begin→has been on　　　 18. may→might　19. to come→to have come　　　　　　　　　

9. refuses→refused 10. am→have been　 11. speaks→speak　 12. will come→comes 13. do→does　　　　　　　　　　　　　　　 　　　 14. has died→has been dead　15. (the Yangtze River) was→is　 16. finishes→finished　

20. He joined the league for two years.　　　　　　　　　　 　 　　　　 　　　　　

　Keys:1. sent→send　　 2. have seen→saw　3. never visited→have never visited　 4. struck→has strusk　5. is hearing→hears 6. knows→knew　7. left→had left　　 8. would have asked→had asked

19. You ought to come yesterday.　　　　　　　　　　　　 　 　　　　　　

18. The girl worked hard so that she may not fail in the exam.　 　　　　　　

17. The film has begun for 5 minutes.　 　　　　　　　　　　　　　　　　 　　　　　　

16. She made up her mind to be a nurse after she finishes school.