说明
祈使句之后的附加疑问句
核心问题
（1）Don't smoke in the meeting-room, ____?
A. do you B. will you C. can you D. could you(全国高考,91-16)
(2) Be sure to write to us, ____?
A. will you B. aren't you C. can you D. mustn't you(全国高考,93-35)
以上两题的答案均为 will you。请问能否用 can you 呢？
词典解答
上面的试题不恰当。上两题中用 can you 也是完全正确的。见 tag questions ，… will you?/won't you?/can you?