can thread
Verbo regular: thread - threaded- threaded

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can thread
you can thread
he can thread
we can thread
you can thread
they can thread 	I can be threading
you can be threading
he can be threading
we can be threading
you can be threading
they can be threading	I can have threaded
you can have threaded
he can have threaded
we can have threaded
you can have threaded
they can have threaded	I can have been threading
you can have been threading
he can have been threading
we can have been threading
you can have been threading
they can have been threading	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can't thread
you can't thread
he can't thread
we can't thread
you can't thread
they can't thread 	I can't be threading
you can't be threading
he can't be threading
we can't be threading
you can't be threading
they can't be threading	I can't have threaded
you can't have threaded
he can't have threaded
we can't have threaded
you can't have threaded
they can't have threaded	I can't have been threading
you can't have been threading
he can't have been threading
we can't have been threading
you can't have been threading
they can't have been threading	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I thread?
can you thread?
can he thread?
can we thread?
can you thread?
can they thread? 	can I be threading?
can you be threading?
can he be threading?
can we be threading?
can you be threading?
can they be threading? 	can I have threaded?
can you have threaded?
can he have threaded?
can we have threaded?
can you have threaded?
can they have threaded? 	can I have been threading?
can you have been threading?
can he have been threading?
can we have been threading?
can you have been threading?
can they have been threading? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can't I thread?
can't you thread?
can't he thread?
can't we thread?
can't you thread?
can't they thread? 	can't I be threading?
can't you be threading?
can't he be threading?
can't we be threading?
can't you be threading?
can't they be threading? 	can't I have threaded?
can't you have threaded?
can't he have threaded?
can't we have threaded?
can't you have threaded?
can't they have threaded? 	can't I have been threading?
can't you have been threading?
can't he have been threading?
can't we have been threading?
can't you have been threading?
can't they have been threading?