English verb conjugation TO HAPPEN
Regular verb: happen - happened - happened
Indicative
Present
-
-
do
esn't it happen?
-
-
-
Present continuous
-
-
isn't it happen
ing?
-
-
-
Preterite
-
-
didn't it happen?
-
-
-
Preterite continuous
-
-
wasn't it happen
ing?
-
-
-
Present perfect
-
-
hasn't it happen
ed?
-
-
-
Present perfect continuous
-
-
hasn't it
been happen
ing?
-
-
-
Pluperfect
-
-
hadn't it happen
ed?
-
-
-
Pluperfect continuous
-
-
hadn't it been happen
ing?
-
-
-
Future
-
-
won't it happen?
-
-
-
Future continuous
-
-
won't it
be happen
ing?
-
-
-
Future perfect
-
-
won't it
have happen
ed?
-
-
-
Future perfect continuous
-
-
won't it
have been happen
ing?
-
-
-
Conditional
Present
-
-
wouldn't it happen?
-
-
-
Present continuous
-
-
wouldn't it
be happen
ing?
-
-
-
Past
-
-
wouldn't it
have happen
ed?
-
-
-
Past continuous
-
-
wouldn't it
have been happen
ing?
-
-
-
Imperative
Infinitive
Participle