新编英语语法教程 第20讲 练习参考答案 Ex. 20A 1. / 2. / 3. / 4. / 5. / 6. / 7. to 8. / ；to 9. to 10. to 11. / 12. / 13. / 14. to 15. to 16. / 17. (to) 18. / 19. / 20. (to) 21. / 22. (to) 23. / 24. / ；to 25. to 26. / 27. to 28. to 29. / ；/ 30. / 31. (to) 32. / 33. to 34. / 35. / 36. / 37. / 38. / ；/ 39. / 40. / ；/ Ex. 20B 1. begging 2. coming 3. running 4. (doing) 5. playing 6. marrying 7. buying 8. improving 9. meeting 10. eating 11. having seen 12. lending 13. speaking 14. staying 15. smoking 16. increasing 17. having made 18. travelling 19. following 20. restraining Ex. 20C 1. write, beginning 2. doing, doing 3. leaving, going 4. having, told 5. being separated 6. building 7. speak, being 8. getting, closing 9. going 10. belling, say 11. trying, answer 12. increasing 13. becoming 14. trying, make 15. having heard 16. dislike, living 17. try, discuss, speaking 18. teaching 19. increasing 20. travelling 本文来源：https://www.wddqw.com/doc/7881c6b62a160b4e767f5acfa1c7aa00b42a9d8b.html