疑问词在英语中十分重要，可以帮助提出问题和了解信息。主要有四种类型：基本疑问句、特殊疑问句、选择疑问句和反意疑问句。基本疑问句由疑问词+助动词+主语+谓语构成。特殊疑问句提出具体的问题，语序为疑问词+谓语+主语。选择疑问句提供选项供被问者选择。反意疑问句用于询问对方是否同意一个观点。掌握疑问词的使用可以更自如地与他人交流，理解他人的意思。
一、基本疑问句
基本疑问句是英语中最基础的语法结构之一，它由疑问词+助动词+主语+谓语构成。例如：
- What are you doing?
- Where is the station?
- Who is your teacher?
- Why are you late?
二、特殊疑问句
特殊疑问句是指以疑问词开头的疑问句，它所提问的问题是具体的、明确的。特殊疑问句的语序是疑问词+谓语+主语。例如：
- What time is it?
- Where do you live?
- Who are you talking to?
- Why did you choose this university?
三、选择疑问句
选择疑问句是指在提问时，提供了一些选项，让被问者进行选择的疑问句。选择疑问句的语法结构为“或者”(or)或“还是”(or else)。例如：
- Do you want tea or coffee?
- Are you going to the party or not?
- Would you like to go for a walk or stay at home?
四、反意疑问句
反意疑问句是一种表达方式，用于询问对方是否同意或不同意一个观点。反意疑问句的语法结构为“陈述句+反意疑问词”。例如：
- You like pizza, don't you?
- It's a beautiful day, isn't it?
- You aren't feeling well, are you?
