1. Unit Four Key to Study & Practice Unit Four Key to Study & Practice

2. 1. g 2. f 3. h 4. i Vocabulary IV. Vocabulary IV. 5. a 6. b 7. c 8. e 9. j 10. d

3. Ⅴ.Ⅴ. Ⅴ.Ⅴ. 1. free 4. different 2. accept 3. at least 5. failure

4. 6. sunset 9. unnecessary 7. quiet 8. in the past 10. turn off

5. Ⅵ.Ⅵ. Ⅵ.Ⅵ. 1. involves 4. freed from 2. get to 3. Nevertheless 5. actually

6. 6. disturbed 9. worthwhile 7. typical 8. come up with 10. come to

7. 11. current 14. program 12. communicate 13. gap

8. Ⅶ.Ⅶ. Ⅶ.Ⅶ. 1. come up with some good ideas / suggestions 2. are prohibited from

9. 3. to communicate with one another 4. to bring together people

10. 5. in its birth rate 6. Partly because of

11. 1. honestly, dishonest, honesty, honest, Word Buiding Ⅷ. Word Buiding Ⅷ. honest

12. 2. childish, childishly, child, Childhood, childhood

13. 3. activities, act, active, act, actively, Actions, activity

14. 4. emotional, unemotional, emotion, Emotionally, emotional

15. 5. acceptable, acceptably, accept, acceptance, accept

16. 6. distraction, distracted, distracts, distracting, distractions

17. 1. take a ride 2. pay a visit to 3. had / took a rest Structure Ⅸ. Structure Ⅸ.

18. 4. had a talk 5. had a discussion on / about 6. took a last look

19. 1. with your support 2. Even with air and water Ⅹ. Model 1 Model 2

20. 3. without hard work / Without working hard 4. without their assistance

21. 1. It has been (is) about four and a half years since the Wangs settled down in this country. Model 3

22. 2. It has been (is) less than three months since she joined the Youth league.

23. It has been (is) 20 years since I got to know her in Beijing. 3. It has been (is) 20 years since I got to know her in Beijing.

24. It has been (is) over a century since the railway was completed 4. It has been (is) over a century since the railway was completed

25. He proposed that we put on a short play at the English evening. 1. He proposed that we put on a short play at the English evening. Ⅺ.Ⅺ.Ⅺ.Ⅺ. Ⅺ.Ⅺ.Ⅺ.Ⅺ.

26. I (would like to) suggest that he visit the Great Wall, the Summer Palace, etc. 2. I (would like to) suggest that he visit the Great Wall, the Summer Palace, etc.

27. He proposed that the novel be made into a film. 3. He proposed that the novel be made into a film.

28. My proposal is that the dispute be settled by peaceful means. 4. My proposal is that the dispute be settled by peaceful means.

29. proposed (1) proposed prohibited (2) prohibited social (3) social Cloze Ⅻ. (A) Cloze communicate (4) communicate

30. actually (5) actually mental (6) mental rate (7) rate bringing (8) bringing

31. together (9) together proposal (10) proposal worthwhile (11) worthwhile involve (12) involve

32. fun (1) fun turn (2) turn in (3) in (B) (B) 1 different / interesting (4) different / interesting

33. make (5) make will (6) will By / From (7) By / From latest (8) latest

34. and (9) and in (10) in watch (11) watch or (12) or

35. in (13) in to (14) to There (15) There for (16) for

36. may (17) may home (18) home reasons (19) reasons

37. but (1) but used (2) used little / bit (3) little / bit 2 2 few (4) few

38. little (5) little number (6) number some (7) some while (8) while

39. any (5) any deal (6) deal no (7) no Now (8) Now

40. To take this job would involve working on weekends frequently, but John didn’t mind. 1. To take this job would involve working on weekends frequently, but John didn’t mind. Translation ⅩⅢ. Translation

41. It is well known that lung cancer is caused at least in part by smoking too much. 2. It is well known that lung cancer is caused at least in part by smoking too much.

42. My grandparents said that the man who invented television had once lived in their neighborhood. 3. My grandparents said that the man who invented television had once lived in their neighborhood.

43. I propose that we go to find Prof. Smith in his office right after the meeting and invite him to our English evening. 4. I propose that we go to find Prof. Smith in his office right after the meeting and invite him to our English evening.

44. Having been operated on twice for the disease, she was so weakened that she could barely stand up. 5. Having been operated on twice for the disease, she was so weakened that she could barely stand up.

45. Educators think that the generation growing up with television spend so much of their time in front of the TV that they do not have enough time to study. 6. Educators think that the generation growing up with television spend so much of their time in front of the TV that they do not have enough time to study.

46. I do hope that you can come up with a better solution than this one. 7. I do hope that you can come up with a better solution than this one.

47. At fist glance the picture didn’t look very good, but after examining it carefully, we found that it was indeed a masterpiece. 8. At fist glance the picture didn’t look very good, but after examining it carefully, we found that it was indeed a masterpiece.