English verb conjugation COULD LAST

Regular verb: last - lasted - lasted

Affirmation

Simple form

I could last
you could last
he could last
we could last
you could last
they could last

V-ing form

I could be lasting
you could be lasting
he could be lasting
we could be lasting
you could be lasting
they could be lasting

Perfect

I could have lasted
you could have lasted
he could have lasted
we could have lasted
you could have lasted
they could have lasted

V-ing perfect

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

Negation

Simple form

I could not last
you could not last
he could not last
we could not last
you could not last
they could not last

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I last?
could you last?
could he last?
could we last?
could you last?
could they last?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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