I must fishtail you must fishtail he must fishtail we must fishtail you must fishtail they must fishtail
Forma con V-ing
I must be fishtailing you must be fishtailing he must be fishtailing we must be fishtailing you must be fishtailing they must be fishtailing
Perfecto
I must have fishtailed you must have fishtailed he must have fishtailed we must have fishtailed you must have fishtailed they must have fishtailed
Perfecto con V-ing
I must have been fishtailing you must have been fishtailing he must have been fishtailing we must have been fishtailing you must have been fishtailing they must have been fishtailing
Negación
Forma simple
I must not fishtail you must not fishtail he must not fishtail we must not fishtail you must not fishtail they must not fishtail
Forma con V-ing
I must not be fishtailing you must not be fishtailing he must not be fishtailing we must not be fishtailing you must not be fishtailing they must not be fishtailing
Perfecto
I must not have fishtailed you must not have fishtailed he must not have fishtailed we must not have fishtailed you must not have fishtailed they must not have fishtailed
Perfecto con V-ing
I must not have been fishtailing you must not have been fishtailing he must not have been fishtailing we must not have been fishtailing you must not have been fishtailing they must not have been fishtailing
Forma interrogativa
Forma simple
must I fishtail? must you fishtail? must he fishtail? must we fishtail? must you fishtail? must they fishtail?
Forma con V-ing
must I be fishtailing? must you be fishtailing? must he be fishtailing? must we be fishtailing? must you be fishtailing? must they be fishtailing?
Perfecto
must I have fishtailed? must you have fishtailed? must he have fishtailed? must we have fishtailed? must you have fishtailed? must they have fishtailed?
Perfecto con V-ing
must I have been fishtailing? must you have been fishtailing? must he have been fishtailing? must we have been fishtailing? must you have been fishtailing? must they have been fishtailing?
Forma interro-negativa
Forma simple
must I not fishtail? must you not fishtail? must he not fishtail? must we not fishtail? must you not fishtail? must they not fishtail?
Forma con V-ing
must I not be fishtailing? must you not be fishtailing? must he not be fishtailing? must we not be fishtailing? must you not be fishtailing? must they not be fishtailing?
Perfecto
must I not have fishtailed? must you not have fishtailed? must he not have fishtailed? must we not have fishtailed? must you not have fishtailed? must they not have fishtailed?
Perfecto con V-ing
must I not have been fishtailing? must you not have been fishtailing? must he not have been fishtailing? must we not have been fishtailing? must you not have been fishtailing? must they not have been fishtailing?