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Other forms without ? | remove negation | contraction
Modal : no | may | might | can | could | shall | should | will | would | must | ought to

English verb conjugation TO HAPPEN

Regular verb: happen - happened - happened

Indicative

Present
-
-
does it not happen?
-
-
-
Present continuous
-
-
is it not happening?
-
-
-
Preterite
-
-
did it not happen?
-
-
-
Preterite continuous
-
-
was it not happening?
-
-
-
Present perfect
-
-
has it not happened?
-
-
-
Present perfect continuous
-
-
has it not been happening?
-
-
-
Pluperfect
-
-
had it not happened?
-
-
-
Pluperfect continuous
-
-
had it not been happening?
-
-
-
Future
-
-
will it not happen?
-
-
-
Future continuous
-
-
will it not be happening?
-
-
-
Future perfect
-
-
will it not have happened?
-
-
-
Future perfect continuous
-
-
will it not have been happening?
-
-
-

Conditional

Present
-
-
would it not happen?
-
-
-
Present continuous
-
-
would it not be happening?
-
-
-
Past
-
-
would it not have happened?
-
-
-
Past continuous
-
-
would it not have been happening?
-
-
-

Imperative

Imperative
-
-
-
 
 
 

Infinitive

Infinitive
to happen
 
 
 

Participle

Present
happening
Past
happened