English verb conjugation CAN CONCENTRATE

Regular verb: concentrate - concentrated - concentrated

Affirmation

Simple form

I can concentrate
you can concentrate
she can concentrate
we can concentrate
you can concentrate
they can concentrate

V-ing form

I can be concentrating
you can be concentrating
she can be concentrating
we can be concentrating
you can be concentrating
they can be concentrating

Perfect

I can have concentrated
you can have concentrated
she can have concentrated
we can have concentrated
you can have concentrated
they can have concentrated

V-ing perfect

I can have been concentrating
you can have been concentrating
she can have been concentrating
we can have been concentrating
you can have been concentrating
they can have been concentrating

Negation

Simple form

I can't concentrate
you can't concentrate
she can't concentrate
we can't concentrate
you can't concentrate
they can't concentrate

V-ing form

I can't be concentrating
you can't be concentrating
she can't be concentrating
we can't be concentrating
you can't be concentrating
they can't be concentrating

Perfect

I can't have concentrated
you can't have concentrated
she can't have concentrated
we can't have concentrated
you can't have concentrated
they can't have concentrated

V-ing perfect

I can't have been concentrating
you can't have been concentrating
she can't have been concentrating
we can't have been concentrating
you can't have been concentrating
they can't have been concentrating

Interrogative form

Simple form

can I concentrate?
can you concentrate?
can she concentrate?
can we concentrate?
can you concentrate?
can they concentrate?

V-ing form

can I be concentrating?
can you be concentrating?
can she be concentrating?
can we be concentrating?
can you be concentrating?
can they be concentrating?

Perfect

can I have concentrated?
can you have concentrated?
can she have concentrated?
can we have concentrated?
can you have concentrated?
can they have concentrated?

V-ing perfect

can I have been concentrating?
can you have been concentrating?
can she have been concentrating?
can we have been concentrating?
can you have been concentrating?
can they have been concentrating?

Interro-negative form

Simple form

can't I concentrate?
can't you concentrate?
can't she concentrate?
can't we concentrate?
can't you concentrate?
can't they concentrate?

V-ing form

can't I be concentrating?
can't you be concentrating?
can't she be concentrating?
can't we be concentrating?
can't you be concentrating?
can't they be concentrating?

Perfect

can't I have concentrated?
can't you have concentrated?
can't she have concentrated?
can't we have concentrated?
can't you have concentrated?
can't they have concentrated?

V-ing perfect

can't I have been concentrating?
can't you have been concentrating?
can't she have been concentrating?
can't we have been concentrating?
can't you have been concentrating?
can't they have been concentrating?

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