can trace
Verbo regular: trace - traced- traced

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can trace
you can trace
he can trace
we can trace
you can trace
they can trace 	I can be tracing
you can be tracing
he can be tracing
we can be tracing
you can be tracing
they can be tracing	I can have traced
you can have traced
he can have traced
we can have traced
you can have traced
they can have traced	I can have been tracing
you can have been tracing
he can have been tracing
we can have been tracing
you can have been tracing
they can have been tracing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot trace
you cannot trace
he cannot trace
we cannot trace
you cannot trace
they cannot trace 	I cannot be tracing
you cannot be tracing
he cannot be tracing
we cannot be tracing
you cannot be tracing
they cannot be tracing	I cannot have traced
you cannot have traced
he cannot have traced
we cannot have traced
you cannot have traced
they cannot have traced	I cannot have been tracing
you cannot have been tracing
he cannot have been tracing
we cannot have been tracing
you cannot have been tracing
they cannot have been tracing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I trace?
can you trace?
can he trace?
can we trace?
can you trace?
can they trace? 	can I be tracing?
can you be tracing?
can he be tracing?
can we be tracing?
can you be tracing?
can they be tracing? 	can I have traced?
can you have traced?
can he have traced?
can we have traced?
can you have traced?
can they have traced? 	can I have been tracing?
can you have been tracing?
can he have been tracing?
can we have been tracing?
can you have been tracing?
can they have been tracing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not trace?
can you not trace?
can he not trace?
can we not trace?
can you not trace?
can they not trace? 	can I not be tracing?
can you not be tracing?
can he not be tracing?
can we not be tracing?
can you not be tracing?
can they not be tracing? 	can I not have traced?
can you not have traced?
can he not have traced?
can we not have traced?
can you not have traced?
can they not have traced? 	can I not have been tracing?
can you not have been tracing?
can he not have been tracing?
can we not have been tracing?
can you not have been tracing?
can they not have been tracing?