都可以.因为这是一个宾语从句.what在从句中作主语,代表一个名词sth.你在陈述句里既可以说Sth is love,也可以说Love is sth.所以两种说法都是可以的.
特殊的情况是有,比如The doctor asked me what was the matter.
虽然the matter是名词,但这里把the matter看作形容词,等于wrong,
就像说The doctor asked me what was wrong.
所以不能说The doctor asked me what the matter was.