English verb conjugation TO HAPPEN

Regular verb: happen - happened - happened

Indicative

Present

-
-
does it happen?
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-
-

Present continuous

-
-
is it happening?
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-
-

Preterite

-
-
did it happen?
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-
-

Preterite continuous

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-
was it happening?
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-
-

Present perfect

-
-
has it happened?
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-
-

Present perfect continuous

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-
has it been happening?
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-
-

Pluperfect

-
-
had it happened?
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-
-

Pluperfect continuous

-
-
had it been happening?
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-
-

Future

-
-
will it happen?
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-
-

Future continuous

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-
will it be happening?
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-
-

Future perfect

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-
will it have happened?
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-
-

Future perfect continuous

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-
will it have been happening?
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-
-

Conditional

Present

-
-
would it happen?
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-
-

Present continuous

-
-
would it be happening?
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-
-

Past

-
-
would it have happened?
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-
-

Past continuous

-
-
would it have been happening?
-
-
-

Imperative

Imperative

-
-
-

 
 
 

Infinitive

Infinitive

to happen

 
 
 

Participle

Present

happening

Past

happened