Conjugaison du verbe anglais
MUST UNDERPIN

Verbe régulier : underpin - underpinned - underpinned
Traduction française : soutenir - étayer

Affirmation

Forme simple	Forme en V-ing
I must underpin you must underpin she must underpin we must underpin you must underpin they must underpin	I must be underpinning you must be underpinning she must be underpinning we must be underpinning you must be underpinning they must be underpinning
Perfect	Perfect en V-ing
I must have underpinned you must have underpinned she must have underpinned we must have underpinned you must have underpinned they must have underpinned	I must have been underpinning you must have been underpinning she must have been underpinning we must have been underpinning you must have been underpinning they must have been underpinning

Négation

Forme simple	Forme en V-ing
I must not underpin you must not underpin she must not underpin we must not underpin you must not underpin they must not underpin	I must not be underpinning you must not be underpinning she must not be underpinning we must not be underpinning you must not be underpinning they must not be underpinning
Perfect	Perfect en V-ing
I must not have underpinned you must not have underpinned she must not have underpinned we must not have underpinned you must not have underpinned they must not have underpinned	I must not have been underpinning you must not have been underpinning she must not have been underpinning we must not have been underpinning you must not have been underpinning they must not have been underpinning

Forme interrogative

Forme simple	Forme en V-ing
must I underpin? must you underpin? must she underpin? must we underpin? must you underpin? must they underpin?	must I be underpinning? must you be underpinning? must she be underpinning? must we be underpinning? must you be underpinning? must they be underpinning?
Perfect	Perfect en V-ing
must I have underpinned? must you have underpinned? must she have underpinned? must we have underpinned? must you have underpinned? must they have underpinned?	must I have been underpinning? must you have been underpinning? must she have been underpinning? must we have been underpinning? must you have been underpinning? must they have been underpinning?

Forme interro-négative

Forme simple	Forme en V-ing
must I not underpin? must you not underpin? must she not underpin? must we not underpin? must you not underpin? must they not underpin?	must I not be underpinning? must you not be underpinning? must she not be underpinning? must we not be underpinning? must you not be underpinning? must they not be underpinning?
Perfect	Perfect en V-ing
must I not have underpinned? must you not have underpinned? must she not have underpinned? must we not have underpinned? must you not have underpinned? must they not have underpinned?	must I not have been underpinning? must you not have been underpinning? must she not have been underpinning? must we not have been underpinning? must you not have been underpinning? must they not have been underpinning?