I must skate you must skate he must skate we must skate you must skate they must skate
Forma com V-ing
I must be skating you must be skating he must be skating we must be skating you must be skating they must be skating
Perfeito
I must have skated you must have skated he must have skated we must have skated you must have skated they must have skated
Perfeito com V-ing
I must have been skating you must have been skating he must have been skating we must have been skating you must have been skating they must have been skating
Negação
Forma simple
I mustn't skate you mustn't skate he mustn't skate we mustn't skate you mustn't skate they mustn't skate
Forma com V-ing
I mustn't be skating you mustn't be skating he mustn't be skating we mustn't be skating you mustn't be skating they mustn't be skating
Perfeito
I mustn't have skated you mustn't have skated he mustn't have skated we mustn't have skated you mustn't have skated they mustn't have skated
Perfeito com V-ing
I mustn't have been skating you mustn't have been skating he mustn't have been skating we mustn't have been skating you mustn't have been skating they mustn't have been skating
Forma interrogativa
Forma simple
must I skate? must you skate? must he skate? must we skate? must you skate? must they skate?
Forma com V-ing
must I be skating? must you be skating? must he be skating? must we be skating? must you be skating? must they be skating?
Perfeito
must I have skated? must you have skated? must he have skated? must we have skated? must you have skated? must they have skated?
Perfeito com V-ing
must I have been skating? must you have been skating? must he have been skating? must we have been skating? must you have been skating? must they have been skating?
Forma interro-Negação
Forma simple
mustn't I skate? mustn't you skate? mustn't he skate? mustn't we skate? mustn't you skate? mustn't they skate?
Forma com V-ing
mustn't I be skating? mustn't you be skating? mustn't he be skating? mustn't we be skating? mustn't you be skating? mustn't they be skating?
Perfeito
mustn't I have skated? mustn't you have skated? mustn't he have skated? mustn't we have skated? mustn't you have skated? mustn't they have skated?
Perfeito com V-ing
mustn't I have been skating? mustn't you have been skating? mustn't he have been skating? mustn't we have been skating? mustn't you have been skating? mustn't they have been skating?