Definition
- A2
Used to propose a suggestion or a course of action.
（用於提出建議）為何不…？
Why don't you try asking the manager for a raise?
你為何不試著向經理要求加薪？
Why don't you go for a walk since the weather is so nice?
既然天氣這麼好，你為何不去散個步？
Why don't you go get some groceries first, and we can cook at home?
你為何不先去買些雜貨，我們可以在家做飯？