What about =How about,意思是一樣的,可以互換的.
常用來引起一個問句,表示建議,征求意見或詢問消息,意為"……好不好 ? ","……怎樣 ? ".
后面可以接名詞,代詞和動名詞
例如：
I'd like some rice . What about / How about you ?
What about going to see a film ?
How/What about a drink?" (喝杯酒怎么樣?；喝杯酒好嗎?).
再舉一例："Where should we go on vacation?" "How about Hawaii?" "What about Japan?" ..