他还没来，莫非生病了不成？
tā hái méi lái ， mòfēi shēngbìng le bùchéng ？
He's still not here; could he be ill?
莫非你不认识我了不成？
mòfēi nǐ bù rènshi wǒ le bùchéng ？
Could it be that you don't recognise me any more?
门开着，莫非有人来过不成？
mén kāi zhe ， mòfēi yǒu rén lái guo bùchéng ？
The door's open; could someone have been here?