English verb conjugation
TO STRENGTHEN

Regular verb: strengthen - strengthened - strengthened

Indicative

Present	Present continuous	Preterite	Preterite continuous
don't I strengthen? don't you strengthen? doesn't he strengthen? don't we strengthen? don't you strengthen? don't they strengthen?	am I not strengthening? aren't you strengthening? isn't he strengthening? aren't we strengthening? aren't you strengthening? aren't they strengthening?	didn't I strengthen? didn't you strengthen? didn't he strengthen? didn't we strengthen? didn't you strengthen? didn't they strengthen?	wasn't I strengthening? weren't you strengthening? wasn't he strengthening? weren't we strengthening? weren't you strengthening? weren't they strengthening?
Present perfect	Present perfect continuous	Pluperfect	Pluperfect continuous
haven't I strengthened? haven't you strengthened? hasn't he strengthened? haven't we strengthened? haven't you strengthened? haven't they strengthened?	haven't I been strengthening? haven't you been strengthening? hasn't he been strengthening? haven't we been strengthening? haven't you been strengthening? haven't they been strengthening?	hadn't I strengthened? hadn't you strengthened? hadn't he strengthened? hadn't we strengthened? hadn't you strengthened? hadn't they strengthened?	hadn't I been strengthening? hadn't you been strengthening? hadn't he been strengthening? hadn't we been strengthening? hadn't you been strengthening? hadn't they been strengthening?
Future	Future continuous	Future perfect	Future perfect continuous
won't I strengthen? won't you strengthen? won't he 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 he 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 he 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 he have been strengthening? won't we have been strengthening? won't you have been strengthening? won't they have been strengthening?

Conditional

Present	Present continuous	Past	Past continuous
wouldn't I strengthen? wouldn't you strengthen? wouldn't he strengthen? wouldn't we strengthen? wouldn't you strengthen? wouldn't they strengthen?	wouldn't I be strengthening? wouldn't you be strengthening? wouldn't he be strengthening? wouldn't we be strengthening? wouldn't you be strengthening? wouldn't they be strengthening?	wouldn't I have strengthened? wouldn't you have strengthened? wouldn't he have strengthened? wouldn't we have strengthened? wouldn't you have strengthened? wouldn't they have strengthened?	wouldn't I have been strengthening? wouldn't you have been strengthening? wouldn't he have been strengthening? wouldn't we have been strengthening? wouldn't you have been strengthening? wouldn't they have been strengthening?

Infinitive

Imperative

Infinitive		Imperative
to strengthen		- - -

Participle

Present	Past
strengthening	strengthened