近期看到这个句子，Whatever you do, do not dwell on what might have been, or dwell on what you ‘should’ have done!对what might have been的使用方法有疑惑，能直接作为宾语吗，总感觉缺少了个it；但查阅了一些资料发现这个使用方法非常常见，如
1. Youcan’tprovea negativenorrecreatehistorytoshowwhatmighthavebeen.
2. Aluckyfewbegintheyearhugginga piece of shiny hardware,whilemostwakeup with empty handsanda longingforwhatmighthavebeen.
在T.S. EliotBurnt Norton中也有
What might have been is an abstraction
Remaining a perpetual possibility
only in a world of speculation.如此的使用方法，望指教。
what might have been中的be为不及物动词，不是系词。等于exist。即 what might have existed.
