41. in a word，in words in a word总之，一句话，in words口头上In a word，you are right.

42. in place of，in the place of in place of代替，in the place of在…地方A new building is built in the place of the old one.

43. in secret，in the secret in secret秘密地，暗自地，偷偷地，一般用作状语；in the secret知道内情，知道秘密，一般用作表语My mother was in the secret from the beginning.

44. a girl，one girl a girl可泛指所有女孩，one girl一个女孩Can one girl carry such a big box？

45. take a chair，take the chair take a chair相当于sit down坐下，take the chair开始开会

46. go to sea，by sea，by the sea go to sea当海员，出航，by sea乘船，由海路，by the sea在海边go by sea

47. the doctor and teacher，the doctor and the teacher the doctor and teacher指一个人，既是医生又是老师，the doctor and the teacher两个人，一个医生和一个老师the doctor and teacher is

48. in office，in the office in office在职的，in the office在办公室里He is in office，not out of office.

49. in bed，on the bed in bed卧在床上，on the bed在床上The book is on the bed. He is ill in bed.

50. in charge of，in the charge of in charge of管理，负责照料，in the charge of由……照料He is in charge of the matter. The matter is in the charge of her.

51. in class，in the class in class在课上，in the class在班级里He is the best student in the class.

52. on fire，on the fire on fire着火，on the fire在火上Put the food on the fire. The house is on fire.

53. out of question，out of the question out of question毫无疑问的，out of the question不可能的

54. a second，the second a second又一，再一，the second第……He won the second prize.

55. by day，by the day by day白天，by the day按天计算The workers are paid by the day.

56. the people，a people the people指人，a people指民族The Chinese is a peace-loving people.

57. it，one it同一物体，one同类不同一I lost my pen. I have to buy a new one.

58. that，this that指代上文所提到的，this导出下文所要说的I was ill. That's why...

59. none，nothing，no one none强调有多少，nothing，no one强调有没有，nothing 指物，no one指人——How many…/How much…？None.

60. anyone，any one anyone指人，不能接of，any one指人物均可，可接of any one of you