English verb conjugation COULD CHALK

Regular verb: chalk - chalked - chalked

Affirmation

Simple form

I could chalk
you could chalk
he could chalk
we could chalk
you could chalk
they could chalk

V-ing form

I could be chalking
you could be chalking
he could be chalking
we could be chalking
you could be chalking
they could be chalking

Perfect

I could have chalked
you could have chalked
he could have chalked
we could have chalked
you could have chalked
they could have chalked

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I chalk?
could you chalk?
could he chalk?
could we chalk?
could you chalk?
could they chalk?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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