English verb conjugation COULD BEHAVE

Regular verb: behave - behaved - behaved

Affirmation

Simple form

I could behave
you could behave
he could behave
we could behave
you could behave
they could behave

V-ing form

I could be behaving
you could be behaving
he could be behaving
we could be behaving
you could be behaving
they could be behaving

Perfect

I could have behaved
you could have behaved
he could have behaved
we could have behaved
you could have behaved
they could have behaved

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I behave?
could you behave?
could he behave?
could we behave?
could you behave?
could they behave?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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