61. who, what

　　who 指姓名或关系;

　　what 指职业或地位，例：What is your dad? He is a teacher.

　　62. what, which

　　what 的选择基础是无限制的;

　　which 在一定范围内进行选择，例：Which do you prefer, bananas or apples?

　　63. other, another

　　other 后接名词复数，例：other students

　　another 后接名词单数，例：another student

　　64. not a little, not a bit

　　not a little 非常;

　　not a bit 一点也不，例：I'm not a bit tired. 我一点儿也不累。

　　65. many, much, a lot of

　　many 和可数名词连用，例：I haven't many books.

　　much 和不可数名词连用;

　　a lot of 可数，不可数均可，但不用于否定句。