English verb conjugation COULD EXTEND

Regular verb: extend - extended - extended

Affirmation

Simple form

I could extend
you could extend
she could extend
we could extend
you could extend
they could extend

V-ing form

I could be extending
you could be extending
she could be extending
we could be extending
you could be extending
they could be extending

Perfect

I could have extended
you could have extended
she could have extended
we could have extended
you could have extended
they could have extended

V-ing perfect

I could have been extending
you could have been extending
she could have been extending
we could have been extending
you could have been extending
they could have been extending

Negation

Simple form

I couldn't extend
you couldn't extend
she couldn't extend
we couldn't extend
you couldn't extend
they couldn't extend

V-ing form

I couldn't be extending
you couldn't be extending
she couldn't be extending
we couldn't be extending
you couldn't be extending
they couldn't be extending

Perfect

I couldn't have extended
you couldn't have extended
she couldn't have extended
we couldn't have extended
you couldn't have extended
they couldn't have extended

V-ing perfect

I couldn't have been extending
you couldn't have been extending
she couldn't have been extending
we couldn't have been extending
you couldn't have been extending
they couldn't have been extending

Interrogative form

Simple form

could I extend?
could you extend?
could she extend?
could we extend?
could you extend?
could they extend?

V-ing form

could I be extending?
could you be extending?
could she be extending?
could we be extending?
could you be extending?
could they be extending?

Perfect

could I have extended?
could you have extended?
could she have extended?
could we have extended?
could you have extended?
could they have extended?

V-ing perfect

could I have been extending?
could you have been extending?
could she have been extending?
could we have been extending?
could you have been extending?
could they have been extending?

Interro-negative form

Simple form

couldn't I extend?
couldn't you extend?
couldn't she extend?
couldn't we extend?
couldn't you extend?
couldn't they extend?

V-ing form

couldn't I be extending?
couldn't you be extending?
couldn't she be extending?
couldn't we be extending?
couldn't you be extending?
couldn't they be extending?

Perfect

couldn't I have extended?
couldn't you have extended?
couldn't she have extended?
couldn't we have extended?
couldn't you have extended?
couldn't they have extended?

V-ing perfect

couldn't I have been extending?
couldn't you have been extending?
couldn't she have been extending?
couldn't we have been extending?
couldn't you have been extending?
couldn't they have been extending?

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