shall strengthen
Verbo regular: strengthen - strengthened- strengthened

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shall strengthen
you shall strengthen
he shall strengthen
we shall strengthen
you shall strengthen
they shall strengthen 	I shall be strengthening
you shall be strengthening
he shall be strengthening
we shall be strengthening
you shall be strengthening
they shall be strengthening	I shall have strengthened
you shall have strengthened
he shall have strengthened
we shall have strengthened
you shall have strengthened
they shall have strengthened	I shall have been strengthening
you shall have been strengthening
he shall have been strengthening
we shall have been strengthening
you shall have been strengthening
they shall have been strengthening	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shall not strengthen
you shall not strengthen
he shall not strengthen
we shall not strengthen
you shall not strengthen
they shall not strengthen 	I shall not be strengthening
you shall not be strengthening
he shall not be strengthening
we shall not be strengthening
you shall not be strengthening
they shall not be strengthening	I shall not have strengthened
you shall not have strengthened
he shall not have strengthened
we shall not have strengthened
you shall not have strengthened
they shall not have strengthened	I shall not have been strengthening
you shall not have been strengthening
he shall not have been strengthening
we shall not have been strengthening
you shall not have been strengthening
they shall not have been strengthening	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shall I strengthen?
shall you strengthen?
shall he strengthen?
shall we strengthen?
shall you strengthen?
shall they strengthen? 	shall I be strengthening?
shall you be strengthening?
shall he be strengthening?
shall we be strengthening?
shall you be strengthening?
shall they be strengthening? 	shall I have strengthened?
shall you have strengthened?
shall he have strengthened?
shall we have strengthened?
shall you have strengthened?
shall they have strengthened? 	shall I have been strengthening?
shall you have been strengthening?
shall he have been strengthening?
shall we have been strengthening?
shall you have been strengthening?
shall they have been strengthening? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shall I not strengthen?
shall you not strengthen?
shall he not strengthen?
shall we not strengthen?
shall you not strengthen?
shall they not strengthen? 	shall I not be strengthening?
shall you not be strengthening?
shall he not be strengthening?
shall we not be strengthening?
shall you not be strengthening?
shall they not be strengthening? 	shall I not have strengthened?
shall you not have strengthened?
shall he not have strengthened?
shall we not have strengthened?
shall you not have strengthened?
shall they not have strengthened? 	shall I not have been strengthening?
shall you not have been strengthening?
shall he not have been strengthening?
shall we not have been strengthening?
shall you not have been strengthening?
shall they not have been strengthening?