shall concenter
Verbo regular: concenter - concentered- concentered

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I shall concenter
you shall concenter
he shall concenter
we shall concenter
you shall concenter
they shall concenter 	I shall be concentering
you shall be concentering
he shall be concentering
we shall be concentering
you shall be concentering
they shall be concentering	I shall have concentered
you shall have concentered
he shall have concentered
we shall have concentered
you shall have concentered
they shall have concentered	I shall have been concentering
you shall have been concentering
he shall have been concentering
we shall have been concentering
you shall have been concentering
they shall have been concentering	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I shall not concenter
you shall not concenter
he shall not concenter
we shall not concenter
you shall not concenter
they shall not concenter 	I shall not be concentering
you shall not be concentering
he shall not be concentering
we shall not be concentering
you shall not be concentering
they shall not be concentering	I shall not have concentered
you shall not have concentered
he shall not have concentered
we shall not have concentered
you shall not have concentered
they shall not have concentered	I shall not have been concentering
you shall not have been concentering
he shall not have been concentering
we shall not have been concentering
you shall not have been concentering
they shall not have been concentering	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
shall I concenter?
shall you concenter?
shall he concenter?
shall we concenter?
shall you concenter?
shall they concenter? 	shall I be concentering?
shall you be concentering?
shall he be concentering?
shall we be concentering?
shall you be concentering?
shall they be concentering? 	shall I have concentered?
shall you have concentered?
shall he have concentered?
shall we have concentered?
shall you have concentered?
shall they have concentered? 	shall I have been concentering?
shall you have been concentering?
shall he have been concentering?
shall we have been concentering?
shall you have been concentering?
shall they have been concentering? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
shall I not concenter?
shall you not concenter?
shall he not concenter?
shall we not concenter?
shall you not concenter?
shall they not concenter? 	shall I not be concentering?
shall you not be concentering?
shall he not be concentering?
shall we not be concentering?
shall you not be concentering?
shall they not be concentering? 	shall I not have concentered?
shall you not have concentered?
shall he not have concentered?
shall we not have concentered?
shall you not have concentered?
shall they not have concentered? 	shall I not have been concentering?
shall you not have been concentering?
shall he not have been concentering?
shall we not have been concentering?
shall you not have been concentering?
shall they not have been concentering?