English verb conjugation COULD LAUGH

Regular verb: laugh - laughed - laughed

Affirmation

Simple form

I could laugh
you could laugh
he could laugh
we could laugh
you could laugh
they could laugh

V-ing form

I could be laughing
you could be laughing
he could be laughing
we could be laughing
you could be laughing
they could be laughing

Perfect

I could have laughed
you could have laughed
he could have laughed
we could have laughed
you could have laughed
they could have laughed

V-ing perfect

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

Negation

Simple form

I could not laugh
you could not laugh
he could not laugh
we could not laugh
you could not laugh
they could not laugh

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I laugh?
could you laugh?
could he laugh?
could we laugh?
could you laugh?
could they laugh?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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