含义和用法
**What**
What是一个疑问代词，用来探究事物的性质、特征、数量或价值。它可以指代事物，但不能指代具有代理能力的人或动物。
**Who**
Who也是一个疑问代词，用来探究人的身份或性质。它只能指代拥有代理能力的人或动物。
对象
**What** 可以指代：
* 事物：What is that?
* 特征：What color is it?
* 数量：What is the time?
* 价值：What is the price?
**Who** 可以指代：
* 人：Who is he?
* 动物：Who is this dog?
* 具有代理能力的实体：Who is the leader?
区别
**1. 语法功能**
* What用于询问事物的信息，而who用于询问人的信息。
**2. 指代范围**
* What指代事物，而who指代人或具有代理能力的实体。
**3. 形式**
* What有不同的形式，包括what, what's, whatsoever，而who通常只有who。
**4. 用法**
**What** 用法：
* 作为疑问句的主语：What is this?
* 作为宾语：Tell me what you want.
* 作为定语：I don't know what to say.
**Who** 用法：
* 作为疑问句的主语：Who is he?
* 作为宾语：I want to know who did it.
* 作为定语：I don't know who you are.
示例
**What**
* What is the capital of France?
* What is the difference between a cat and a dog?
* What time is it?
**Who**
* Who is the president of the United States?
* Who wrote this book?
* Who do you think will win the game?
有趣
