English verb conjugation COULD CURB

Regular verb: curb - curbed - curbed

Affirmation

Simple form

I could curb
you could curb
he could curb
we could curb
you could curb
they could curb

V-ing form

I could be curbing
you could be curbing
he could be curbing
we could be curbing
you could be curbing
they could be curbing

Perfect

I could have curbed
you could have curbed
he could have curbed
we could have curbed
you could have curbed
they could have curbed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I curb?
could you curb?
could he curb?
could we curb?
could you curb?
could they curb?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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