The Conjugator
Conjugação do verbo inglês
CAN HAPPEN

Verbo regular: happen - happened - happened

Afirmação

Forma simple

Forma com V-ing

-
-
it can happen
-
-
-		-
-
it can be happening
-
-
-

Perfeito

Perfeito com V-ing

-
-
it can have happened
-
-
-		-
-
it can have been happening
-
-
-

Negação

Forma simple

Forma com V-ing

-
-
it cannot happen
-
-
-		-
-
it cannot be happening
-
-
-

Perfeito

Perfeito com V-ing

-
-
it cannot have happened
-
-
-		-
-
it cannot have been happening
-
-
-

Forma interrogativa

Forma simple

Forma com V-ing

-
-
can it happen?
-
-
-		-
-
can it be happening?
-
-
-

Perfeito

Perfeito com V-ing

-
-
can it have happened?
-
-
-		-
-
can it have been happening?
-
-
-

Forma interro-Negação

Forma simple

Forma com V-ing

-
-
can it not happen?
-
-
-		-
-
can it not be happening?
-
-
-

Perfeito

Perfeito com V-ing

-
-
can it not have happened?
-
-
-		-
-
can it not have been happening?
-
-
-