#왜~하니? Why~?
Why do/did + you / they +Why does/did + he / she +work / buy the book / like English / hate vegetable / need money / cry / leave + ?너 왜 일하니?
Why do you work?너 왜 일했니?
Why did you work?그녀는 왜 일했니?
Why did she work?너 왜 우니?
Why do you cry?그녀는 왜 울었나요?
Why did she cry?너 왜 떠났니?
Why did you leave?그들은 왜 떠나나요?
Why did they leave?당신은 왜 돈이 필요했나요?
Why did you need money?그들은 왜 돈이 필요하나요?
Why do they.....
원문링크 : 왜~하니(Why)