must have use know in sentence
Know Verb Forms
| Base form (v1) |
Know |
| Past form (v2) |
Knew |
Past Participle (v3)
-ed form |
Known |
Present Participle (v4)
‘ing’ form |
Knowing |
Present simple (v5)
s / es/ ies |
Knows |
MUST HAVE use -know verb forms
POSITIVE STATEMENT:
I must have known
situation
We must have known
situation
You must have known
situation
They must have known
situation
He must have known
situation
She must have known
situation
It must have known
situation
Name must have known
situation
QUESTION:
must I have known
situation
?
must We have known
situation
?
must You have known
situation
?
must They have known
situation
?
must He have known
situation
?
must She have known
situation
?
must It have known
situation
?
must Name have known
situation
?
