will strengthen
Regular verb: strengthen - strengthened- strengthened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'll strengthen
you'll strengthen
she'll strengthen
we'll strengthen
you'll strengthen
they'll strengthen 	I'll be strengthening
you'll be strengthening
she'll be strengthening
we'll be strengthening
you'll be strengthening
they'll be strengthening	I'll have strengthened
you'll have strengthened
she'll have strengthened
we'll have strengthened
you'll have strengthened
they'll have strengthened	I'll have been strengthening
you'll have been strengthening
she'll have been strengthening
we'll have been strengthening
you'll have been strengthening
they'll have been strengthening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I won't strengthen
you won't strengthen
she won't strengthen
we won't strengthen
you won't strengthen
they won't strengthen 	I won't be strengthening
you won't be strengthening
she won't be strengthening
we won't be strengthening
you won't be strengthening
they won't be strengthening	I won't have strengthened
you won't have strengthened
she won't have strengthened
we won't have strengthened
you won't have strengthened
they won't have strengthened	I won't have been strengthening
you won't have been strengthening
she won't have been strengthening
we won't have been strengthening
you won't have been strengthening
they won't have been strengthening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
will I strengthen?
will you strengthen?
will she strengthen?
will we strengthen?
will you strengthen?
will they strengthen? 	will I be strengthening?
will you be strengthening?
will she be strengthening?
will we be strengthening?
will you be strengthening?
will they be strengthening? 	will I have strengthened?
will you have strengthened?
will she 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 she have been strengthening?
will we have been strengthening?
will you have been strengthening?
will they have been strengthening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
won't I strengthen?
won't you strengthen?
won't she strengthen?
won't we strengthen?
won't you strengthen?
won't they strengthen? 	won't I be strengthening?
won't you be strengthening?
won't she be strengthening?
won't we be strengthening?
won't you be strengthening?
won't they be strengthening? 	won't I have strengthened?
won't you have strengthened?
won't she have strengthened?
won't we have strengthened?
won't you have strengthened?
won't they have strengthened? 	won't I have been strengthening?
won't you have been strengthening?
won't she have been strengthening?
won't we have been strengthening?
won't you have been strengthening?
won't they have been strengthening?