English verb conjugation CAN RESEARCH

Regular verb: research - researched - researched

Affirmation

Simple form

I can research
you can research
he can research
we can research
you can research
they can research

V-ing form

I can be researching
you can be researching
he can be researching
we can be researching
you can be researching
they can be researching

Perfect

I can have researched
you can have researched
he can have researched
we can have researched
you can have researched
they can have researched

V-ing perfect

I can have been researching
you can have been researching
he can have been researching
we can have been researching
you can have been researching
they can have been researching

Negation

Simple form

I cannot research
you cannot research
he cannot research
we cannot research
you cannot research
they cannot research

V-ing form

I cannot be researching
you cannot be researching
he cannot be researching
we cannot be researching
you cannot be researching
they cannot be researching

Perfect

I cannot have researched
you cannot have researched
he cannot have researched
we cannot have researched
you cannot have researched
they cannot have researched

V-ing perfect

I cannot have been researching
you cannot have been researching
he cannot have been researching
we cannot have been researching
you cannot have been researching
they cannot have been researching

Interrogative form

Simple form

can I research?
can you research?
can he research?
can we research?
can you research?
can they research?

V-ing form

can I be researching?
can you be researching?
can he be researching?
can we be researching?
can you be researching?
can they be researching?

Perfect

can I have researched?
can you have researched?
can he have researched?
can we have researched?
can you have researched?
can they have researched?

V-ing perfect

can I have been researching?
can you have been researching?
can he have been researching?
can we have been researching?
can you have been researching?
can they have been researching?

Interro-negative form

Simple form

can I not research?
can you not research?
can he not research?
can we not research?
can you not research?
can they not research?

V-ing form

can I not be researching?
can you not be researching?
can he not be researching?
can we not be researching?
can you not be researching?
can they not be researching?

Perfect

can I not have researched?
can you not have researched?
can he not have researched?
can we not have researched?
can you not have researched?
can they not have researched?

V-ing perfect

can I not have been researching?
can you not have been researching?
can he not have been researching?
can we not have been researching?
can you not have been researching?
can they not have been researching?

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