must uphold
Verbe irrégulier : uphold - upheld- upheld
Traduction française : défendre - maintenir 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must uphold
you must uphold
she must uphold
we must uphold
you must uphold
they must uphold 	I must be upholding
you must be upholding
she must be upholding
we must be upholding
you must be upholding
they must be upholding	I must have upheld
you must have upheld
she must have upheld
we must have upheld
you must have upheld
they must have upheld	I must have been upholding
you must have been upholding
she must have been upholding
we must have been upholding
you must have been upholding
they must have been upholding	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not uphold
you must not uphold
she must not uphold
we must not uphold
you must not uphold
they must not uphold 	I must not be upholding
you must not be upholding
she must not be upholding
we must not be upholding
you must not be upholding
they must not be upholding	I must not have upheld
you must not have upheld
she must not have upheld
we must not have upheld
you must not have upheld
they must not have upheld	I must not have been upholding
you must not have been upholding
she must not have been upholding
we must not have been upholding
you must not have been upholding
they must not have been upholding	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I uphold?
must you uphold?
must she uphold?
must we uphold?
must you uphold?
must they uphold? 	must I be upholding?
must you be upholding?
must she be upholding?
must we be upholding?
must you be upholding?
must they be upholding? 	must I have upheld?
must you have upheld?
must she have upheld?
must we have upheld?
must you have upheld?
must they have upheld? 	must I have been upholding?
must you have been upholding?
must she have been upholding?
must we have been upholding?
must you have been upholding?
must they have been upholding? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not uphold?
must you not uphold?
must she not uphold?
must we not uphold?
must you not uphold?
must they not uphold? 	must I not be upholding?
must you not be upholding?
must she not be upholding?
must we not be upholding?
must you not be upholding?
must they not be upholding? 	must I not have upheld?
must you not have upheld?
must she not have upheld?
must we not have upheld?
must you not have upheld?
must they not have upheld? 	must I not have been upholding?
must you not have been upholding?
must she not have been upholding?
must we not have been upholding?
must you not have been upholding?
must they not have been upholding?