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