can shark
Verbo regular: shark - sharked- sharked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can shark
you can shark
he can shark
we can shark
you can shark
they can shark 	I can be sharking
you can be sharking
he can be sharking
we can be sharking
you can be sharking
they can be sharking	I can have sharked
you can have sharked
he can have sharked
we can have sharked
you can have sharked
they can have sharked	I can have been sharking
you can have been sharking
he can have been sharking
we can have been sharking
you can have been sharking
they can have been sharking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot shark
you cannot shark
he cannot shark
we cannot shark
you cannot shark
they cannot shark 	I cannot be sharking
you cannot be sharking
he cannot be sharking
we cannot be sharking
you cannot be sharking
they cannot be sharking	I cannot have sharked
you cannot have sharked
he cannot have sharked
we cannot have sharked
you cannot have sharked
they cannot have sharked	I cannot have been sharking
you cannot have been sharking
he cannot have been sharking
we cannot have been sharking
you cannot have been sharking
they cannot have been sharking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I shark?
can you shark?
can he shark?
can we shark?
can you shark?
can they shark? 	can I be sharking?
can you be sharking?
can he be sharking?
can we be sharking?
can you be sharking?
can they be sharking? 	can I have sharked?
can you have sharked?
can he have sharked?
can we have sharked?
can you have sharked?
can they have sharked? 	can I have been sharking?
can you have been sharking?
can he have been sharking?
can we have been sharking?
can you have been sharking?
can they have been sharking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not shark?
can you not shark?
can he not shark?
can we not shark?
can you not shark?
can they not shark? 	can I not be sharking?
can you not be sharking?
can he not be sharking?
can we not be sharking?
can you not be sharking?
can they not be sharking? 	can I not have sharked?
can you not have sharked?
can he not have sharked?
can we not have sharked?
can you not have sharked?
can they not have sharked? 	can I not have been sharking?
can you not have been sharking?
can he not have been sharking?
can we not have been sharking?
can you not have been sharking?
can they not have been sharking?