English verb conjugation TO HAPPEN

Regular verb: happen - happened - happened

Indicative

Present

-
-
it happens
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-
-

Present continuous

-
-
it's happening
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-
-

Preterite

-
-
it happened
-
-
-

Preterite continuous

-
-
it was happening
-
-
-

Present perfect

-
-
it's happened
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-
-

Present perfect continuous

-
-
it's been happening
-
-
-

Pluperfect

-
-
it'd happened
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-
-

Pluperfect continuous

-
-
it'd been happening
-
-
-

Future

-
-
it'll happen
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-
-

Future continuous

-
-
it'll be happening
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-
-

Future perfect

-
-
it'll have happened
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-
-

Future perfect continuous

-
-
it'll have been happening
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-
-

Conditional

Present

-
-
it'd happen
-
-
-

Present continuous

-
-
it'd be happening
-
-
-

Past

-
-
it'd have happened
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-
-

Past continuous

-
-
it'd have been happening
-
-
-

Imperative

Imperative

-
Let's happen
-

 
 
 

Infinitive

Infinitive

to happen

 
 
 

Participle

Present

happening

Past

happened