English verb conjugation CAN SHARPEN

Regular verb: sharpen - sharpened - sharpened

Affirmation

Simple form

I can sharpen
you can sharpen
he can sharpen
we can sharpen
you can sharpen
they can sharpen

V-ing form

I can be sharpening
you can be sharpening
he can be sharpening
we can be sharpening
you can be sharpening
they can be sharpening

Perfect

I can have sharpened
you can have sharpened
he can have sharpened
we can have sharpened
you can have sharpened
they can have sharpened

V-ing perfect

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

Negation

Simple form

I can't sharpen
you can't sharpen
he can't sharpen
we can't sharpen
you can't sharpen
they can't sharpen

V-ing form

I can't be sharpening
you can't be sharpening
he can't be sharpening
we can't be sharpening
you can't be sharpening
they can't be sharpening

Perfect

I can't have sharpened
you can't have sharpened
he can't have sharpened
we can't have sharpened
you can't have sharpened
they can't have sharpened

V-ing perfect

I can't have been sharpening
you can't have been sharpening
he can't have been sharpening
we can't have been sharpening
you can't have been sharpening
they can't have been sharpening

Interrogative form

Simple form

can I sharpen?
can you sharpen?
can he sharpen?
can we sharpen?
can you sharpen?
can they sharpen?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

can't I sharpen?
can't you sharpen?
can't he sharpen?
can't we sharpen?
can't you sharpen?
can't they sharpen?

V-ing form

can't I be sharpening?
can't you be sharpening?
can't he be sharpening?
can't we be sharpening?
can't you be sharpening?
can't they be sharpening?

Perfect

can't I have sharpened?
can't you have sharpened?
can't he have sharpened?
can't we have sharpened?
can't you have sharpened?
can't they have sharpened?

V-ing perfect

can't I have been sharpening?
can't you have been sharpening?
can't he have been sharpening?
can't we have been sharpening?
can't you have been sharpening?
can't they have been sharpening?

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