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.

46. go to sea, by sea, by the sea

45. take a chair, take the chair

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

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?

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.

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.

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.

40. take air, take the air

　take air 传播，走漏，take the air 到户外去，散步 We take the air every day.

39. take advice, take the(one's) advice

　take advice 征求意见，take the advice 接受忠告 He refused to take the advice and failed again.

38. more than a year, more than one year

　more than a year 一年多，more than one year 超过一年(两年或三年等)