What what 是“什么” Where where 是“哪里” How how 是“怎样”， Who who 是“谁” When when 是“什么时候” 要做什么 是 What do you do? 做了什么 是 What did you do? 去了哪里 是 Where did you go? 怎么样去 是 How did they go? 他们是谁 是 Who are they? 什么时候去 是 When did you go?