English verb conjugation CAN ROOF

Regular verb: roof - roofed - roofed

Affirmation

Simple form

I can roof
you can roof
he can roof
we can roof
you can roof
they can roof

V-ing form

I can be roofing
you can be roofing
he can be roofing
we can be roofing
you can be roofing
they can be roofing

Perfect

I can have roofed
you can have roofed
he can have roofed
we can have roofed
you can have roofed
they can have roofed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

can I roof?
can you roof?
can he roof?
can we roof?
can you roof?
can they roof?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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