to strengthen
Regular verb: strengthen - strengthened- strengthened

Indicative 	
Present 	Present continuous 	Preterite 	Preterite continuous 	
 don't I strengthen?
don't you strengthen?
doesn't she strengthen?
don't we strengthen?
don't you strengthen?
don't they strengthen? 	amI not strengthening?
aren't you strengthening?
isn't she strengthening?
aren't we strengthening?
aren't you strengthening?
aren't they strengthening? 	didn't I strengthen?
didn't you strengthen?
didn't she strengthen?
didn't we strengthen?
didn't you strengthen?
didn't they strengthen? 	wasn't I strengthening?
weren't you strengthening?
wasn't she 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 she 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 she 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 she 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 she 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 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? 	

Conditional 	
Present 	Present continuous 	Past 	Past continuous 	
wouldn't I strengthen?
wouldn't you strengthen?
wouldn't she 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 she 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 she 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 she 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