Definition: used to ask in a polite way whether something is possible or true Level: C2
你该不会是西班牙人吧？
You're not Spanish ___by ___any ___chance, are you?
你碰巧看到我的日记了吗？
Have you ___by ___any ___chance seen my diary?
请问您是否恰好有一份研究报告的副本？
Would you ___by ___any ___chance have a copy of the research report?
