41. in a word, in words 

in a word 总之,一句话,例:In a word, you are right.
in words 口头上。

42. in place of, in the place of 

in place of 代替;
in the place of 在…地方,例: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,例: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,例: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。