I can compare you can compare he can compare we can compare you can compare they can compare
Forma com V-ing
I can be comparing you can be comparing he can be comparing we can be comparing you can be comparing they can be comparing
Perfeito
I can have compared you can have compared he can have compared we can have compared you can have compared they can have compared
Perfeito com V-ing
I can have been comparing you can have been comparing he can have been comparing we can have been comparing you can have been comparing they can have been comparing
Negação
Forma simple
I can't compare you can't compare he can't compare we can't compare you can't compare they can't compare
Forma com V-ing
I can't be comparing you can't be comparing he can't be comparing we can't be comparing you can't be comparing they can't be comparing
Perfeito
I can't have compared you can't have compared he can't have compared we can't have compared you can't have compared they can't have compared
Perfeito com V-ing
I can't have been comparing you can't have been comparing he can't have been comparing we can't have been comparing you can't have been comparing they can't have been comparing
Forma interrogativa
Forma simple
can I compare? can you compare? can he compare? can we compare? can you compare? can they compare?
Forma com V-ing
can I be comparing? can you be comparing? can he be comparing? can we be comparing? can you be comparing? can they be comparing?
Perfeito
can I have compared? can you have compared? can he have compared? can we have compared? can you have compared? can they have compared?
Perfeito com V-ing
can I have been comparing? can you have been comparing? can he have been comparing? can we have been comparing? can you have been comparing? can they have been comparing?
Forma interro-Negação
Forma simple
can't I compare? can't you compare? can't he compare? can't we compare? can't you compare? can't they compare?
Forma com V-ing
can't I be comparing? can't you be comparing? can't he be comparing? can't we be comparing? can't you be comparing? can't they be comparing?
Perfeito
can't I have compared? can't you have compared? can't he have compared? can't we have compared? can't you have compared? can't they have compared?
Perfeito com V-ing
can't I have been comparing? can't you have been comparing? can't he have been comparing? can't we have been comparing? can't you have been comparing? can't they have been comparing?