61. who, what　

who 指姓名或關系；
what 指職業(yè)或地位，例：What is your dad? He is a teacher.

62. what, which　

what 的選擇基礎是無限制的；
which 在一定范圍內進行選擇，例：Which do you prefer, bananas or apples?

63. other, another　

other 后接名詞復數，例：other students
another 后接名詞單數，例：another student

64. not a little, not a bit　

not a little 非常；
not a bit 一點也不，例：I'm not a bit tired. 我一點兒也不累。

65. many, much, a lot of　

many 和可數名詞連用，例：I haven't many books.
much 和不可數名詞連用；
a lot of 可數，不可數均可，但不用于否定句。