I must sneak you must sneak she must sneak we must sneak you must sneak they must sneak
Forma com V-ing
I must be sneaking you must be sneaking she must be sneaking we must be sneaking you must be sneaking they must be sneaking
Perfeito
I must have snuck you must have snuck she must have snuck we must have snuck you must have snuck they must have snuck
Perfeito com V-ing
I must have been sneaking you must have been sneaking she must have been sneaking we must have been sneaking you must have been sneaking they must have been sneaking
Negação
Forma simple
I mustn't sneak you mustn't sneak she mustn't sneak we mustn't sneak you mustn't sneak they mustn't sneak
Forma com V-ing
I mustn't be sneaking you mustn't be sneaking she mustn't be sneaking we mustn't be sneaking you mustn't be sneaking they mustn't be sneaking
Perfeito
I mustn't have snuck you mustn't have snuck she mustn't have snuck we mustn't have snuck you mustn't have snuck they mustn't have snuck
Perfeito com V-ing
I mustn't have been sneaking you mustn't have been sneaking she mustn't have been sneaking we mustn't have been sneaking you mustn't have been sneaking they mustn't have been sneaking
Forma interrogativa
Forma simple
must I sneak? must you sneak? must she sneak? must we sneak? must you sneak? must they sneak?
Forma com V-ing
must I be sneaking? must you be sneaking? must she be sneaking? must we be sneaking? must you be sneaking? must they be sneaking?
Perfeito
must I have snuck? must you have snuck? must she have snuck? must we have snuck? must you have snuck? must they have snuck?
Perfeito com V-ing
must I have been sneaking? must you have been sneaking? must she have been sneaking? must we have been sneaking? must you have been sneaking? must they have been sneaking?
Forma interro-Negação
Forma simple
mustn't I sneak? mustn't you sneak? mustn't she sneak? mustn't we sneak? mustn't you sneak? mustn't they sneak?
Forma com V-ing
mustn't I be sneaking? mustn't you be sneaking? mustn't she be sneaking? mustn't we be sneaking? mustn't you be sneaking? mustn't they be sneaking?
Perfeito
mustn't I have snuck? mustn't you have snuck? mustn't she have snuck? mustn't we have snuck? mustn't you have snuck? mustn't they have snuck?
Perfeito com V-ing
mustn't I have been sneaking? mustn't you have been sneaking? mustn't she have been sneaking? mustn't we have been sneaking? mustn't you have been sneaking? mustn't they have been sneaking?