English verb conjugation COULD ISOLATE

Regular verb: isolate - isolated - isolated

Affirmation

Simple form

I could isolate
you could isolate
he could isolate
we could isolate
you could isolate
they could isolate

V-ing form

I could be isolating
you could be isolating
he could be isolating
we could be isolating
you could be isolating
they could be isolating

Perfect

I could have isolated
you could have isolated
he could have isolated
we could have isolated
you could have isolated
they could have isolated

V-ing perfect

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

Negation

Simple form

I couldn't isolate
you couldn't isolate
he couldn't isolate
we couldn't isolate
you couldn't isolate
they couldn't isolate

V-ing form

I couldn't be isolating
you couldn't be isolating
he couldn't be isolating
we couldn't be isolating
you couldn't be isolating
they couldn't be isolating

Perfect

I couldn't have isolated
you couldn't have isolated
he couldn't have isolated
we couldn't have isolated
you couldn't have isolated
they couldn't have isolated

V-ing perfect

I couldn't have been isolating
you couldn't have been isolating
he couldn't have been isolating
we couldn't have been isolating
you couldn't have been isolating
they couldn't have been isolating

Interrogative form

Simple form

could I isolate?
could you isolate?
could he isolate?
could we isolate?
could you isolate?
could they isolate?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

couldn't I isolate?
couldn't you isolate?
couldn't he isolate?
couldn't we isolate?
couldn't you isolate?
couldn't they isolate?

V-ing form

couldn't I be isolating?
couldn't you be isolating?
couldn't he be isolating?
couldn't we be isolating?
couldn't you be isolating?
couldn't they be isolating?

Perfect

couldn't I have isolated?
couldn't you have isolated?
couldn't he have isolated?
couldn't we have isolated?
couldn't you have isolated?
couldn't they have isolated?

V-ing perfect

couldn't I have been isolating?
couldn't you have been isolating?
couldn't he have been isolating?
couldn't we have been isolating?
couldn't you have been isolating?
couldn't they have been isolating?

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