English verb conjugation COULD UNDERLINE

Regular verb: underline - underlined - underlined

Affirmation

Simple form

I could underline
you could underline
she could underline
we could underline
you could underline
they could underline

V-ing form

I could be underlining
you could be underlining
she could be underlining
we could be underlining
you could be underlining
they could be underlining

Perfect

I could have underlined
you could have underlined
she 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
she 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
she 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
she 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
she 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
she 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 she underline?
could we underline?
could you underline?
could they underline?

V-ing form

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

Perfect

could I have underlined?
could you have underlined?
could she 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 she 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 she 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 she 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 she 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 she 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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