how have you been?正確嗎?

Yes, completely correct.

[How have you been] is similar to [How are you], where the first one is past-participe and the second one is present tense. The major difference is you can always ask anyone [How are you], but you usually just ask [How have you been] if you know that person and had met that person previously. It is like asking about [So, how is everything since last time we met?]

How have you been？　您近況好嗎？


本句是"How are you？ "的完成式，兩者表達意思略有不同。"How have you been？ "強調詢問對方「近來一段期間的狀況」，而"How are you？ "則是強調詢問對方「此刻或目前的狀況」。

Q：Hello, Jane!
（哈囉, 阿珍！）
A：Hi, Tom.　How have you been？　
（嗨，湯姆。您近況好嗎？）
Q：Pretty good.　Actually, I'm quite busy with work.　By the way, say “hello” to your wife.　
（很好。事實上我一直忙於工作。請代我向尊夫人問好。）

2007-03-13 21:47:21 補充：
留意How have you been doing? 是「最近還好嗎？」意思等於How are you? 或How have you been? 但有別於What have you been doing? (本欄轉載自《蘋果日報》的「征服英語」專欄，作者為古德明先生) http://education.atnext.com/index.cfm?fuseaction=Article.View&articleID=5283388&issueID=20051005

I don't know what do you mean....

How are you?
How do you do?
What are you doing now?
Where are you now?

不正確!
係Where have you been?