can dam
Verbo regular: dam - dammed- dammed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can dam
you can dam
she can dam
we can dam
you can dam
they can dam 	I can be damming
you can be damming
she can be damming
we can be damming
you can be damming
they can be damming	I can have dammed
you can have dammed
she can have dammed
we can have dammed
you can have dammed
they can have dammed	I can have been damming
you can have been damming
she can have been damming
we can have been damming
you can have been damming
they can have been damming	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot dam
you cannot dam
she cannot dam
we cannot dam
you cannot dam
they cannot dam 	I cannot be damming
you cannot be damming
she cannot be damming
we cannot be damming
you cannot be damming
they cannot be damming	I cannot have dammed
you cannot have dammed
she cannot have dammed
we cannot have dammed
you cannot have dammed
they cannot have dammed	I cannot have been damming
you cannot have been damming
she cannot have been damming
we cannot have been damming
you cannot have been damming
they cannot have been damming	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I dam?
can you dam?
can she dam?
can we dam?
can you dam?
can they dam? 	can I be damming?
can you be damming?
can she be damming?
can we be damming?
can you be damming?
can they be damming? 	can I have dammed?
can you have dammed?
can she have dammed?
can we have dammed?
can you have dammed?
can they have dammed? 	can I have been damming?
can you have been damming?
can she have been damming?
can we have been damming?
can you have been damming?
can they have been damming? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not dam?
can you not dam?
can she not dam?
can we not dam?
can you not dam?
can they not dam? 	can I not be damming?
can you not be damming?
can she not be damming?
can we not be damming?
can you not be damming?
can they not be damming? 	can I not have dammed?
can you not have dammed?
can she not have dammed?
can we not have dammed?
can you not have dammed?
can they not have dammed? 	can I not have been damming?
can you not have been damming?
can she not have been damming?
can we not have been damming?
can you not have been damming?
can they not have been damming?