A: We're going to have to postpone the meeting.
甲：我們必須將會議延后舉行。
B: Why?
乙：為什么呢？
A: Mr. Chen can't make it today.
甲：陳先生今天趕不來。
類似用語
How come?為什么？
百寶箱
注意“Why?"與“How come?"均表示“為什么？”，但在完整的問句中卻有所差異。Why之后必須接倒裝句型；而How come之后則接不倒裝句型，即“How come+主語+動詞？”。
Why is Mary crying?
= How come Mary is crying?
= Why is it that Mary is crying?
= How is it that Mary is crying?
（瑪麗為什么在哭呢？）