I can shriek you can shriek he can shriek we can shriek you can shriek they can shriek
Forma com V-ing
I can be shrieking you can be shrieking he can be shrieking we can be shrieking you can be shrieking they can be shrieking
Perfeito
I can have shrieked you can have shrieked he can have shrieked we can have shrieked you can have shrieked they can have shrieked
Perfeito com V-ing
I can have been shrieking you can have been shrieking he can have been shrieking we can have been shrieking you can have been shrieking they can have been shrieking
Negação
Forma simple
I can't shriek you can't shriek he can't shriek we can't shriek you can't shriek they can't shriek
Forma com V-ing
I can't be shrieking you can't be shrieking he can't be shrieking we can't be shrieking you can't be shrieking they can't be shrieking
Perfeito
I can't have shrieked you can't have shrieked he can't have shrieked we can't have shrieked you can't have shrieked they can't have shrieked
Perfeito com V-ing
I can't have been shrieking you can't have been shrieking he can't have been shrieking we can't have been shrieking you can't have been shrieking they can't have been shrieking
Forma interrogativa
Forma simple
can I shriek? can you shriek? can he shriek? can we shriek? can you shriek? can they shriek?
Forma com V-ing
can I be shrieking? can you be shrieking? can he be shrieking? can we be shrieking? can you be shrieking? can they be shrieking?
Perfeito
can I have shrieked? can you have shrieked? can he have shrieked? can we have shrieked? can you have shrieked? can they have shrieked?
Perfeito com V-ing
can I have been shrieking? can you have been shrieking? can he have been shrieking? can we have been shrieking? can you have been shrieking? can they have been shrieking?
Forma interro-Negação
Forma simple
can't I shriek? can't you shriek? can't he shriek? can't we shriek? can't you shriek? can't they shriek?
Forma com V-ing
can't I be shrieking? can't you be shrieking? can't he be shrieking? can't we be shrieking? can't you be shrieking? can't they be shrieking?
Perfeito
can't I have shrieked? can't you have shrieked? can't he have shrieked? can't we have shrieked? can't you have shrieked? can't they have shrieked?
Perfeito com V-ing
can't I have been shrieking? can't you have been shrieking? can't he have been shrieking? can't we have been shrieking? can't you have been shrieking? can't they have been shrieking?