must have use happen in sentence
Happen Verb Forms
| Base form (v1) |
Happen |
| Past form (v2) |
Happened |
Past Participle (v3)
-ed form |
Happened |
Present Participle (v4)
‘ing’ form |
Happening |
Present simple (v5)
s / es/ ies |
Happens |
MUST HAVE use -happen verb forms
POSITIVE STATEMENT:
I must have happened
situation
We must have happened
situation
You must have happened
situation
They must have happened
situation
He must have happened
situation
She must have happened
situation
It must have happened
situation
Name must have happened
situation
QUESTION:
must I have happened
situation
?
must We have happened
situation
?
must You have happened
situation
?
must They have happened
situation
?
must He have happened
situation
?
must She have happened
situation
?
must It have happened
situation
?
must Name have happened
situation
?
