can improve
Verbo regular: improve - improved- improved

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can improve
you can improve
he can improve
we can improve
you can improve
they can improve 	I can be improving
you can be improving
he can be improving
we can be improving
you can be improving
they can be improving	I can have improved
you can have improved
he can have improved
we can have improved
you can have improved
they can have improved	I can have been improving
you can have been improving
he can have been improving
we can have been improving
you can have been improving
they can have been improving	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can't improve
you can't improve
he can't improve
we can't improve
you can't improve
they can't improve 	I can't be improving
you can't be improving
he can't be improving
we can't be improving
you can't be improving
they can't be improving	I can't have improved
you can't have improved
he can't have improved
we can't have improved
you can't have improved
they can't have improved	I can't have been improving
you can't have been improving
he can't have been improving
we can't have been improving
you can't have been improving
they can't have been improving	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I improve?
can you improve?
can he improve?
can we improve?
can you improve?
can they improve? 	can I be improving?
can you be improving?
can he be improving?
can we be improving?
can you be improving?
can they be improving? 	can I have improved?
can you have improved?
can he have improved?
can we have improved?
can you have improved?
can they have improved? 	can I have been improving?
can you have been improving?
can he have been improving?
can we have been improving?
can you have been improving?
can they have been improving? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can't I improve?
can't you improve?
can't he improve?
can't we improve?
can't you improve?
can't they improve? 	can't I be improving?
can't you be improving?
can't he be improving?
can't we be improving?
can't you be improving?
can't they be improving? 	can't I have improved?
can't you have improved?
can't he have improved?
can't we have improved?
can't you have improved?
can't they have improved? 	can't I have been improving?
can't you have been improving?
can't he have been improving?
can't we have been improving?
can't you have been improving?
can't they have been improving?