English verb conjugation COULD PHOTOSYNTHESIZE

Regular verb: photosynthesize - photosynthesized - photosynthesized

Affirmation

Simple form

I could photosynthesize
you could photosynthesize
he could photosynthesize
we could photosynthesize
you could photosynthesize
they could photosynthesize

V-ing form

I could be photosynthesizing
you could be photosynthesizing
he could be photosynthesizing
we could be photosynthesizing
you could be photosynthesizing
they could be photosynthesizing

Perfect

I could have photosynthesized
you could have photosynthesized
he could have photosynthesized
we could have photosynthesized
you could have photosynthesized
they could have photosynthesized

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I photosynthesize?
could you photosynthesize?
could he photosynthesize?
could we photosynthesize?
could you photosynthesize?
could they photosynthesize?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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