English verb conjugation CAN FASTEN

Regular verb: fasten - fastened - fastened


Affirmation

Simple form

I can fasten
you can fasten
he can fasten
we can fasten
you can fasten
they can fasten

V-ing form

I can be fastening
you can be fastening
he can be fastening
we can be fastening
you can be fastening
they can be fastening

Perfect

I can have fastened
you can have fastened
he can have fastened
we can have fastened
you can have fastened
they can have fastened

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

can I fasten?
can you fasten?
can he fasten?
can we fasten?
can you fasten?
can they fasten?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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