will strengthen
Verbo regular: strengthen - strengthened- strengthened

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

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

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

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