I must falter you must falter he must falter we must falter you must falter they must falter
Forma com V-ing
I must be faltering you must be faltering he must be faltering we must be faltering you must be faltering they must be faltering
Perfeito
I must have faltered you must have faltered he must have faltered we must have faltered you must have faltered they must have faltered
Perfeito com V-ing
I must have been faltering you must have been faltering he must have been faltering we must have been faltering you must have been faltering they must have been faltering
Negação
Forma simple
I mustn't falter you mustn't falter he mustn't falter we mustn't falter you mustn't falter they mustn't falter
Forma com V-ing
I mustn't be faltering you mustn't be faltering he mustn't be faltering we mustn't be faltering you mustn't be faltering they mustn't be faltering
Perfeito
I mustn't have faltered you mustn't have faltered he mustn't have faltered we mustn't have faltered you mustn't have faltered they mustn't have faltered
Perfeito com V-ing
I mustn't have been faltering you mustn't have been faltering he mustn't have been faltering we mustn't have been faltering you mustn't have been faltering they mustn't have been faltering
Forma interrogativa
Forma simple
must I falter? must you falter? must he falter? must we falter? must you falter? must they falter?
Forma com V-ing
must I be faltering? must you be faltering? must he be faltering? must we be faltering? must you be faltering? must they be faltering?
Perfeito
must I have faltered? must you have faltered? must he have faltered? must we have faltered? must you have faltered? must they have faltered?
Perfeito com V-ing
must I have been faltering? must you have been faltering? must he have been faltering? must we have been faltering? must you have been faltering? must they have been faltering?
Forma interro-Negação
Forma simple
mustn't I falter? mustn't you falter? mustn't he falter? mustn't we falter? mustn't you falter? mustn't they falter?
Forma com V-ing
mustn't I be faltering? mustn't you be faltering? mustn't he be faltering? mustn't we be faltering? mustn't you be faltering? mustn't they be faltering?
Perfeito
mustn't I have faltered? mustn't you have faltered? mustn't he have faltered? mustn't we have faltered? mustn't you have faltered? mustn't they have faltered?
Perfeito com V-ing
mustn't I have been faltering? mustn't you have been faltering? mustn't he have been faltering? mustn't we have been faltering? mustn't you have been faltering? mustn't they have been faltering?