can worsen
Verbo regular: worsen - worsened- worsened

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can worsen
you can worsen
she can worsen
we can worsen
you can worsen
they can worsen 	I can be worsening
you can be worsening
she can be worsening
we can be worsening
you can be worsening
they can be worsening	I can have worsened
you can have worsened
she can have worsened
we can have worsened
you can have worsened
they can have worsened	I can have been worsening
you can have been worsening
she can have been worsening
we can have been worsening
you can have been worsening
they can have been worsening	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can't worsen
you can't worsen
she can't worsen
we can't worsen
you can't worsen
they can't worsen 	I can't be worsening
you can't be worsening
she can't be worsening
we can't be worsening
you can't be worsening
they can't be worsening	I can't have worsened
you can't have worsened
she can't have worsened
we can't have worsened
you can't have worsened
they can't have worsened	I can't have been worsening
you can't have been worsening
she can't have been worsening
we can't have been worsening
you can't have been worsening
they can't have been worsening	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I worsen?
can you worsen?
can she worsen?
can we worsen?
can you worsen?
can they worsen? 	can I be worsening?
can you be worsening?
can she be worsening?
can we be worsening?
can you be worsening?
can they be worsening? 	can I have worsened?
can you have worsened?
can she have worsened?
can we have worsened?
can you have worsened?
can they have worsened? 	can I have been worsening?
can you have been worsening?
can she have been worsening?
can we have been worsening?
can you have been worsening?
can they have been worsening? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can't I worsen?
can't you worsen?
can't she worsen?
can't we worsen?
can't you worsen?
can't they worsen? 	can't I be worsening?
can't you be worsening?
can't she be worsening?
can't we be worsening?
can't you be worsening?
can't they be worsening? 	can't I have worsened?
can't you have worsened?
can't she have worsened?
can't we have worsened?
can't you have worsened?
can't they have worsened? 	can't I have been worsening?
can't you have been worsening?
can't she have been worsening?
can't we have been worsening?
can't you have been worsening?
can't they have been worsening?