English verb conjugation CAN YAWN

Regular verb: yawn - yawned - yawned

Affirmation

Simple form

I can yawn
you can yawn
he can yawn
we can yawn
you can yawn
they can yawn

V-ing form

I can be yawning
you can be yawning
he can be yawning
we can be yawning
you can be yawning
they can be yawning

Perfect

I can have yawned
you can have yawned
he can have yawned
we can have yawned
you can have yawned
they can have yawned

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

can I yawn?
can you yawn?
can he yawn?
can we yawn?
can you yawn?
can they yawn?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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