I can enter you can enter he can enter we can enter you can enter they can enter
Forma com V-ing
I can be entering you can be entering he can be entering we can be entering you can be entering they can be entering
Perfeito
I can have entered you can have entered he can have entered we can have entered you can have entered they can have entered
Perfeito com V-ing
I can have been entering you can have been entering he can have been entering we can have been entering you can have been entering they can have been entering
Negação
Forma simple
I can't enter you can't enter he can't enter we can't enter you can't enter they can't enter
Forma com V-ing
I can't be entering you can't be entering he can't be entering we can't be entering you can't be entering they can't be entering
Perfeito
I can't have entered you can't have entered he can't have entered we can't have entered you can't have entered they can't have entered
Perfeito com V-ing
I can't have been entering you can't have been entering he can't have been entering we can't have been entering you can't have been entering they can't have been entering
Forma interrogativa
Forma simple
can I enter? can you enter? can he enter? can we enter? can you enter? can they enter?
Forma com V-ing
can I be entering? can you be entering? can he be entering? can we be entering? can you be entering? can they be entering?
Perfeito
can I have entered? can you have entered? can he have entered? can we have entered? can you have entered? can they have entered?
Perfeito com V-ing
can I have been entering? can you have been entering? can he have been entering? can we have been entering? can you have been entering? can they have been entering?
Forma interro-Negação
Forma simple
can't I enter? can't you enter? can't he enter? can't we enter? can't you enter? can't they enter?
Forma com V-ing
can't I be entering? can't you be entering? can't he be entering? can't we be entering? can't you be entering? can't they be entering?
Perfeito
can't I have entered? can't you have entered? can't he have entered? can't we have entered? can't you have entered? can't they have entered?
Perfeito com V-ing
can't I have been entering? can't you have been entering? can't he have been entering? can't we have been entering? can't you have been entering? can't they have been entering?