English verb conjugation COULD UNDERLINE

Regular verb: underline - underlined - underlined

Affirmation

Simple form

I could underline
you could underline
he could underline
we could underline
you could underline
they could underline

V-ing form

I could be underlining
you could be underlining
he could be underlining
we could be underlining
you could be underlining
they could be underlining

Perfect

I could have underlined
you could have underlined
he could have underlined
we could have underlined
you could have underlined
they could have underlined

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I underline?
could you underline?
could he underline?
could we underline?
could you underline?
could they underline?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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