English verb conjugation COULD PHOTOSYNTHESISE

Regular verb: photosynthesise - photosynthesised - photosynthesised

Affirmation

Simple form

I could photosynthesise
you could photosynthesise
he could photosynthesise
we could photosynthesise
you could photosynthesise
they could photosynthesise

V-ing form

I could be photosynthesising
you could be photosynthesising
he could be photosynthesising
we could be photosynthesising
you could be photosynthesising
they could be photosynthesising

Perfect

I could have photosynthesised
you could have photosynthesised
he could have photosynthesised
we could have photosynthesised
you could have photosynthesised
they could have photosynthesised

V-ing perfect

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

Negation

Simple form

I could not photosynthesise
you could not photosynthesise
he could not photosynthesise
we could not photosynthesise
you could not photosynthesise
they could not photosynthesise

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I photosynthesise?
could you photosynthesise?
could he photosynthesise?
could we photosynthesise?
could you photosynthesise?
could they photosynthesise?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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