to strengthen
Regular verb: strengthen - strengthened- strengthened

Indicative 	
Present 	Present continuous 	Preterite 	Preterite continuous 	
 do I strengthen?
do you strengthen?
doesshe strengthen?
do we strengthen?
do you strengthen?
do they strengthen? 	amI strengthening?
areyou strengthening?
isshe strengthening?
arewe strengthening?
areyou strengthening?
arethey strengthening? 	did I strengthen?
did you strengthen?
did she strengthen?
did we strengthen?
did you strengthen?
did they strengthen? 	wasI strengthening?
wereyou strengthening?
wasshe strengthening?
werewe strengthening?
wereyou strengthening?
werethey strengthening? 	
Present perfect 	Present perfect continuous 	Pluperfect 	Pluperfect continuous 	
 have I strengthened?
have you strengthened?
hasshe strengthened?
have we strengthened?
have you strengthened?
have they strengthened? 	 have I been strengthening?
have you been strengthening?
hasshe been strengthening?
have we been strengthening?
have you been strengthening?
have they been strengthening? 	had I strengthened?
had you strengthened?
had she strengthened?
had we strengthened?
had you strengthened?
had they strengthened? 	had I been strengthening?
had you been strengthening?
had she been strengthening?
had we been strengthening?
had you been strengthening?
had they been strengthening? 	
Future 	Future continuous 	Future perfect 	Future perfect continuous 	
 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? 	

Conditional 	
Present 	Present continuous 	Past 	Past continuous 	
 would I strengthen?
 would you strengthen?
 would she strengthen?
 would we strengthen?
 would you strengthen?
 would they strengthen? 	 would I be strengthening?
 would you be strengthening?
 would she be strengthening?
 would we be strengthening?
 would you be strengthening?
 would they be strengthening? 	 would I have strengthened?
 would you have strengthened?
 would she have strengthened?
 would we have strengthened?
 would you have strengthened?
 would they have strengthened? 	 would I have been strengthening?
 would you have been strengthening?
 would she have been strengthening?
 would we have been strengthening?
 would you have been strengthening?
 would they have been strengthening? 	

Infinitive 	
Imperative 	
Infinitive 	 	Imperative 	 	
to strengthen 	 	-
-
- 	 	

Participle 	
Present 	Past 	 	 	
strengthening	strengthened