I must burrow you must burrow he must burrow we must burrow you must burrow they must burrow
Forma com V-ing
I must be burrowing you must be burrowing he must be burrowing we must be burrowing you must be burrowing they must be burrowing
Perfeito
I must have burrowed you must have burrowed he must have burrowed we must have burrowed you must have burrowed they must have burrowed
Perfeito com V-ing
I must have been burrowing you must have been burrowing he must have been burrowing we must have been burrowing you must have been burrowing they must have been burrowing
Negação
Forma simple
I mustn't burrow you mustn't burrow he mustn't burrow we mustn't burrow you mustn't burrow they mustn't burrow
Forma com V-ing
I mustn't be burrowing you mustn't be burrowing he mustn't be burrowing we mustn't be burrowing you mustn't be burrowing they mustn't be burrowing
Perfeito
I mustn't have burrowed you mustn't have burrowed he mustn't have burrowed we mustn't have burrowed you mustn't have burrowed they mustn't have burrowed
Perfeito com V-ing
I mustn't have been burrowing you mustn't have been burrowing he mustn't have been burrowing we mustn't have been burrowing you mustn't have been burrowing they mustn't have been burrowing
Forma interrogativa
Forma simple
must I burrow? must you burrow? must he burrow? must we burrow? must you burrow? must they burrow?
Forma com V-ing
must I be burrowing? must you be burrowing? must he be burrowing? must we be burrowing? must you be burrowing? must they be burrowing?
Perfeito
must I have burrowed? must you have burrowed? must he have burrowed? must we have burrowed? must you have burrowed? must they have burrowed?
Perfeito com V-ing
must I have been burrowing? must you have been burrowing? must he have been burrowing? must we have been burrowing? must you have been burrowing? must they have been burrowing?
Forma interro-Negação
Forma simple
mustn't I burrow? mustn't you burrow? mustn't he burrow? mustn't we burrow? mustn't you burrow? mustn't they burrow?
Forma com V-ing
mustn't I be burrowing? mustn't you be burrowing? mustn't he be burrowing? mustn't we be burrowing? mustn't you be burrowing? mustn't they be burrowing?
Perfeito
mustn't I have burrowed? mustn't you have burrowed? mustn't he have burrowed? mustn't we have burrowed? mustn't you have burrowed? mustn't they have burrowed?
Perfeito com V-ing
mustn't I have been burrowing? mustn't you have been burrowing? mustn't he have been burrowing? mustn't we have been burrowing? mustn't you have been burrowing? mustn't they have been burrowing?