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

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I may underpin
you may underpin
he may underpin
we may underpin
you may underpin
they may underpin 	I may be underpinning
you may be underpinning
he may be underpinning
we may be underpinning
you may be underpinning
they may be underpinning	I may have underpinned
you may have underpinned
he may have underpinned
we may have underpinned
you may have underpinned
they may have underpinned	I may have been underpinning
you may have been underpinning
he may have been underpinning
we may have been underpinning
you may have been underpinning
they may have been underpinning	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I may not underpin
you may not underpin
he may not underpin
we may not underpin
you may not underpin
they may not underpin 	I may not be underpinning
you may not be underpinning
he may not be underpinning
we may not be underpinning
you may not be underpinning
they may not be underpinning	I may not have underpinned
you may not have underpinned
he may not have underpinned
we may not have underpinned
you may not have underpinned
they may not have underpinned	I may not have been underpinning
you may not have been underpinning
he may not have been underpinning
we may not have been underpinning
you may not have been underpinning
they may not have been underpinning	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
may I underpin?
may you underpin?
may he underpin?
may we underpin?
may you underpin?
may they underpin? 	may I be underpinning?
may you be underpinning?
may he be underpinning?
may we be underpinning?
may you be underpinning?
may they be underpinning? 	may I have underpinned?
may you have underpinned?
may he have underpinned?
may we have underpinned?
may you have underpinned?
may they have underpinned? 	may I have been underpinning?
may you have been underpinning?
may he have been underpinning?
may we have been underpinning?
may you have been underpinning?
may they have been underpinning? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
may I not underpin?
may you not underpin?
may he not underpin?
may we not underpin?
may you not underpin?
may they not underpin? 	may I not be underpinning?
may you not be underpinning?
may he not be underpinning?
may we not be underpinning?
may you not be underpinning?
may they not be underpinning? 	may I not have underpinned?
may you not have underpinned?
may he not have underpinned?
may we not have underpinned?
may you not have underpinned?
may they not have underpinned? 	may I not have been underpinning?
may you not have been underpinning?
may he not have been underpinning?
may we not have been underpinning?
may you not have been underpinning?
may they not have been underpinning?