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 couldn't photosynthesise
you couldn't photosynthesise
he couldn't photosynthesise
we couldn't photosynthesise
you couldn't photosynthesise
they couldn't photosynthesise

V-ing form

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

Perfect

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

V-ing perfect

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

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

V-ing form

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

Perfect

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

V-ing perfect

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

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