I must refund you must refund he must refund we must refund you must refund they must refund
Forma com V-ing
I must be refunding you must be refunding he must be refunding we must be refunding you must be refunding they must be refunding
Perfeito
I must have refunded you must have refunded he must have refunded we must have refunded you must have refunded they must have refunded
Perfeito com V-ing
I must have been refunding you must have been refunding he must have been refunding we must have been refunding you must have been refunding they must have been refunding
Negação
Forma simple
I must not refund you must not refund he must not refund we must not refund you must not refund they must not refund
Forma com V-ing
I must not be refunding you must not be refunding he must not be refunding we must not be refunding you must not be refunding they must not be refunding
Perfeito
I must not have refunded you must not have refunded he must not have refunded we must not have refunded you must not have refunded they must not have refunded
Perfeito com V-ing
I must not have been refunding you must not have been refunding he must not have been refunding we must not have been refunding you must not have been refunding they must not have been refunding
Forma interrogativa
Forma simple
must I refund? must you refund? must he refund? must we refund? must you refund? must they refund?
Forma com V-ing
must I be refunding? must you be refunding? must he be refunding? must we be refunding? must you be refunding? must they be refunding?
Perfeito
must I have refunded? must you have refunded? must he have refunded? must we have refunded? must you have refunded? must they have refunded?
Perfeito com V-ing
must I have been refunding? must you have been refunding? must he have been refunding? must we have been refunding? must you have been refunding? must they have been refunding?
Forma interro-Negação
Forma simple
must I not refund? must you not refund? must he not refund? must we not refund? must you not refund? must they not refund?
Forma com V-ing
must I not be refunding? must you not be refunding? must he not be refunding? must we not be refunding? must you not be refunding? must they not be refunding?
Perfeito
must I not have refunded? must you not have refunded? must he not have refunded? must we not have refunded? must you not have refunded? must they not have refunded?
Perfeito com V-ing
must I not have been refunding? must you not have been refunding? must he not have been refunding? must we not have been refunding? must you not have been refunding? must they not have been refunding?