English verb conjugation COULD TREMBLE

Regular verb: tremble - trembled - trembled

Affirmation

Simple form

I could tremble
you could tremble
he could tremble
we could tremble
you could tremble
they could tremble

V-ing form

I could be trembling
you could be trembling
he could be trembling
we could be trembling
you could be trembling
they could be trembling

Perfect

I could have trembled
you could have trembled
he could have trembled
we could have trembled
you could have trembled
they could have trembled

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I tremble?
could you tremble?
could he tremble?
could we tremble?
could you tremble?
could they tremble?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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