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