English verb conjugation COULD INVIGILATE

Regular verb: invigilate - invigilated - invigilated

Affirmation

Simple form

I could invigilate
you could invigilate
he could invigilate
we could invigilate
you could invigilate
they could invigilate

V-ing form

I could be invigilating
you could be invigilating
he could be invigilating
we could be invigilating
you could be invigilating
they could be invigilating

Perfect

I could have invigilated
you could have invigilated
he could have invigilated
we could have invigilated
you could have invigilated
they could have invigilated

V-ing perfect

I could have been invigilating
you could have been invigilating
he could have been invigilating
we could have been invigilating
you could have been invigilating
they could have been invigilating

Negation

Simple form

I could not invigilate
you could not invigilate
he could not invigilate
we could not invigilate
you could not invigilate
they could not invigilate

V-ing form

I could not be invigilating
you could not be invigilating
he could not be invigilating
we could not be invigilating
you could not be invigilating
they could not be invigilating

Perfect

I could not have invigilated
you could not have invigilated
he could not have invigilated
we could not have invigilated
you could not have invigilated
they could not have invigilated

V-ing perfect

I could not have been invigilating
you could not have been invigilating
he could not have been invigilating
we could not have been invigilating
you could not have been invigilating
they could not have been invigilating

Interrogative form

Simple form

could I invigilate?
could you invigilate?
could he invigilate?
could we invigilate?
could you invigilate?
could they invigilate?

V-ing form

could I be invigilating?
could you be invigilating?
could he be invigilating?
could we be invigilating?
could you be invigilating?
could they be invigilating?

Perfect

could I have invigilated?
could you have invigilated?
could he have invigilated?
could we have invigilated?
could you have invigilated?
could they have invigilated?

V-ing perfect

could I have been invigilating?
could you have been invigilating?
could he have been invigilating?
could we have been invigilating?
could you have been invigilating?
could they have been invigilating?

Interro-negative form

Simple form

could I not invigilate?
could you not invigilate?
could he not invigilate?
could we not invigilate?
could you not invigilate?
could they not invigilate?

V-ing form

could I not be invigilating?
could you not be invigilating?
could he not be invigilating?
could we not be invigilating?
could you not be invigilating?
could they not be invigilating?

Perfect

could I not have invigilated?
could you not have invigilated?
could he not have invigilated?
could we not have invigilated?
could you not have invigilated?
could they not have invigilated?

V-ing perfect

could I not have been invigilating?
could you not have been invigilating?
could he not have been invigilating?
could we not have been invigilating?
could you not have been invigilating?
could they not have been invigilating?

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