I must windsurf you must windsurf he must windsurf we must windsurf you must windsurf they must windsurf
Forma com V-ing
I must be windsurfing you must be windsurfing he must be windsurfing we must be windsurfing you must be windsurfing they must be windsurfing
Perfeito
I must have windsurfed you must have windsurfed he must have windsurfed we must have windsurfed you must have windsurfed they must have windsurfed
Perfeito com V-ing
I must have been windsurfing you must have been windsurfing he must have been windsurfing we must have been windsurfing you must have been windsurfing they must have been windsurfing
Negação
Forma simple
I mustn't windsurf you mustn't windsurf he mustn't windsurf we mustn't windsurf you mustn't windsurf they mustn't windsurf
Forma com V-ing
I mustn't be windsurfing you mustn't be windsurfing he mustn't be windsurfing we mustn't be windsurfing you mustn't be windsurfing they mustn't be windsurfing
Perfeito
I mustn't have windsurfed you mustn't have windsurfed he mustn't have windsurfed we mustn't have windsurfed you mustn't have windsurfed they mustn't have windsurfed
Perfeito com V-ing
I mustn't have been windsurfing you mustn't have been windsurfing he mustn't have been windsurfing we mustn't have been windsurfing you mustn't have been windsurfing they mustn't have been windsurfing
Forma interrogativa
Forma simple
must I windsurf? must you windsurf? must he windsurf? must we windsurf? must you windsurf? must they windsurf?
Forma com V-ing
must I be windsurfing? must you be windsurfing? must he be windsurfing? must we be windsurfing? must you be windsurfing? must they be windsurfing?
Perfeito
must I have windsurfed? must you have windsurfed? must he have windsurfed? must we have windsurfed? must you have windsurfed? must they have windsurfed?
Perfeito com V-ing
must I have been windsurfing? must you have been windsurfing? must he have been windsurfing? must we have been windsurfing? must you have been windsurfing? must they have been windsurfing?
Forma interro-Negação
Forma simple
mustn't I windsurf? mustn't you windsurf? mustn't he windsurf? mustn't we windsurf? mustn't you windsurf? mustn't they windsurf?
Forma com V-ing
mustn't I be windsurfing? mustn't you be windsurfing? mustn't he be windsurfing? mustn't we be windsurfing? mustn't you be windsurfing? mustn't they be windsurfing?
Perfeito
mustn't I have windsurfed? mustn't you have windsurfed? mustn't he have windsurfed? mustn't we have windsurfed? mustn't you have windsurfed? mustn't they have windsurfed?
Perfeito com V-ing
mustn't I have been windsurfing? mustn't you have been windsurfing? mustn't he have been windsurfing? mustn't we have been windsurfing? mustn't you have been windsurfing? mustn't they have been windsurfing?