Would you please explain why, sir?
你能解释一下为什么吗,先生?
能解释一下吗?
If it is not correct, would you please explain why?
如果不正确,请解释原因吗?
If you have no such qualifications, please explain why not.
如果您没有任何资格证书,请解释原因。
Could you please explain why you didn't come to the meeting yesterday?
你能解释一下为什么昨天没来开会吗?
Please explain why this is impossible.
请解释一下这为什么不可能。
Please explain why this is impossible.
请解释一下这为什么不可能。
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