English verb conjugation CAN DOUBT

Regular verb: doubt - doubted - doubted

Affirmation

Simple form

I can doubt
you can doubt
he can doubt
we can doubt
you can doubt
they can doubt

V-ing form

I can be doubting
you can be doubting
he can be doubting
we can be doubting
you can be doubting
they can be doubting

Perfect

I can have doubted
you can have doubted
he can have doubted
we can have doubted
you can have doubted
they can have doubted

V-ing perfect

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

Negation

Simple form

I cannot doubt
you cannot doubt
he cannot doubt
we cannot doubt
you cannot doubt
they cannot doubt

V-ing form

I cannot be doubting
you cannot be doubting
he cannot be doubting
we cannot be doubting
you cannot be doubting
they cannot be doubting

Perfect

I cannot have doubted
you cannot have doubted
he cannot have doubted
we cannot have doubted
you cannot have doubted
they cannot have doubted

V-ing perfect

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

Interrogative form

Simple form

can I doubt?
can you doubt?
can he doubt?
can we doubt?
can you doubt?
can they doubt?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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