English verb conjugation COULD ROOF

Regular verb: roof - roofed - roofed

Affirmation

Simple form

I could roof
you could roof
he could roof
we could roof
you could roof
they could roof

V-ing form

I could be roofing
you could be roofing
he could be roofing
we could be roofing
you could be roofing
they could be roofing

Perfect

I could have roofed
you could have roofed
he could have roofed
we could have roofed
you could have roofed
they could have roofed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I roof?
could you roof?
could he roof?
could we roof?
could you roof?
could they roof?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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