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female gender | Modal : no | may | might | can | could | shall | should | will | would | must | ought to

English verb conjugation COULD BACKDATE

Regular verb: backdate - backdated - backdated


Affirmation

Simple form
I could backdate
you could backdate
he could backdate
we could backdate
you could backdate
they could backdate
V-ing form
I could be backdating
you could be backdating
he could be backdating
we could be backdating
you could be backdating
they could be backdating
Perfect
I could have backdated
you could have backdated
he could have backdated
we could have backdated
you could have backdated
they could have backdated
V-ing perfect
I could have been backdating
you could have been backdating
he could have been backdating
we could have been backdating
you could have been backdating
they could have been backdating

Negation

Simple form
I couldn't backdate
you couldn't backdate
he couldn't backdate
we couldn't backdate
you couldn't backdate
they couldn't backdate
V-ing form
I couldn't be backdating
you couldn't be backdating
he couldn't be backdating
we couldn't be backdating
you couldn't be backdating
they couldn't be backdating
Perfect
I couldn't have backdated
you couldn't have backdated
he couldn't have backdated
we couldn't have backdated
you couldn't have backdated
they couldn't have backdated
V-ing perfect
I couldn't have been backdating
you couldn't have been backdating
he couldn't have been backdating
we couldn't have been backdating
you couldn't have been backdating
they couldn't have been backdating

Interrogative form

Simple form
could I backdate?
could you backdate?
could he backdate?
could we backdate?
could you backdate?
could they backdate?
V-ing form
could I be backdating?
could you be backdating?
could he be backdating?
could we be backdating?
could you be backdating?
could they be backdating?
Perfect
could I have backdated?
could you have backdated?
could he have backdated?
could we have backdated?
could you have backdated?
could they have backdated?
V-ing perfect
could I have been backdating?
could you have been backdating?
could he have been backdating?
could we have been backdating?
could you have been backdating?
could they have been backdating?

Interro-negative form

Simple form
couldn't I backdate?
couldn't you backdate?
couldn't he backdate?
couldn't we backdate?
couldn't you backdate?
couldn't they backdate?
V-ing form
couldn't I be backdating?
couldn't you be backdating?
couldn't he be backdating?
couldn't we be backdating?
couldn't you be backdating?
couldn't they be backdating?
Perfect
couldn't I have backdated?
couldn't you have backdated?
couldn't he have backdated?
couldn't we have backdated?
couldn't you have backdated?
couldn't they have backdated?
V-ing perfect
couldn't I have been backdating?
couldn't you have been backdating?
couldn't he have been backdating?
couldn't we have been backdating?
couldn't you have been backdating?
couldn't they have been backdating?