English verb conjugation COULD FERTILISE

Regular verb: fertilise - fertilised - fertilised

Affirmation

Simple form

I could fertilise
you could fertilise
he could fertilise
we could fertilise
you could fertilise
they could fertilise

V-ing form

I could be fertilising
you could be fertilising
he could be fertilising
we could be fertilising
you could be fertilising
they could be fertilising

Perfect

I could have fertilised
you could have fertilised
he could have fertilised
we could have fertilised
you could have fertilised
they could have fertilised

V-ing perfect

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

Negation

Simple form

I could not fertilise
you could not fertilise
he could not fertilise
we could not fertilise
you could not fertilise
they could not fertilise

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I fertilise?
could you fertilise?
could he fertilise?
could we fertilise?
could you fertilise?
could they fertilise?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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