I can improve you can improve she can improve we can improve you can improve they can improve
Forma com V-ing
I can be improving you can be improving she can be improving we can be improving you can be improving they can be improving
Perfeito
I can have improved you can have improved she can have improved we can have improved you can have improved they can have improved
Perfeito com V-ing
I can have been improving you can have been improving she can have been improving we can have been improving you can have been improving they can have been improving
Negação
Forma simple
I cannot improve you cannot improve she cannot improve we cannot improve you cannot improve they cannot improve
Forma com V-ing
I cannot be improving you cannot be improving she cannot be improving we cannot be improving you cannot be improving they cannot be improving
Perfeito
I cannot have improved you cannot have improved she cannot have improved we cannot have improved you cannot have improved they cannot have improved
Perfeito com V-ing
I cannot have been improving you cannot have been improving she cannot have been improving we cannot have been improving you cannot have been improving they cannot have been improving
Forma interrogativa
Forma simple
can I improve? can you improve? can she improve? can we improve? can you improve? can they improve?
Forma com V-ing
can I be improving? can you be improving? can she be improving? can we be improving? can you be improving? can they be improving?
Perfeito
can I have improved? can you have improved? can she have improved? can we have improved? can you have improved? can they have improved?
Perfeito com V-ing
can I have been improving? can you have been improving? can she have been improving? can we have been improving? can you have been improving? can they have been improving?
Forma interro-Negação
Forma simple
can I not improve? can you not improve? can she not improve? can we not improve? can you not improve? can they not improve?
Forma com V-ing
can I not be improving? can you not be improving? can she not be improving? can we not be improving? can you not be improving? can they not be improving?
Perfeito
can I not have improved? can you not have improved? can she not have improved? can we not have improved? can you not have improved? can they not have improved?
Perfeito com V-ing
can I not have been improving? can you not have been improving? can she not have been improving? can we not have been improving? can you not have been improving? can they not have been improving?