must thwart
Verbe régulier : thwart - thwarted- thwarted
Traduction française : contrecarrer - contrarier les efforts de 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must thwart
you must thwart
she must thwart
we must thwart
you must thwart
they must thwart 	I must be thwarting
you must be thwarting
she must be thwarting
we must be thwarting
you must be thwarting
they must be thwarting	I must have thwarted
you must have thwarted
she must have thwarted
we must have thwarted
you must have thwarted
they must have thwarted	I must have been thwarting
you must have been thwarting
she must have been thwarting
we must have been thwarting
you must have been thwarting
they must have been thwarting	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not thwart
you must not thwart
she must not thwart
we must not thwart
you must not thwart
they must not thwart 	I must not be thwarting
you must not be thwarting
she must not be thwarting
we must not be thwarting
you must not be thwarting
they must not be thwarting	I must not have thwarted
you must not have thwarted
she must not have thwarted
we must not have thwarted
you must not have thwarted
they must not have thwarted	I must not have been thwarting
you must not have been thwarting
she must not have been thwarting
we must not have been thwarting
you must not have been thwarting
they must not have been thwarting	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I thwart?
must you thwart?
must she thwart?
must we thwart?
must you thwart?
must they thwart? 	must I be thwarting?
must you be thwarting?
must she be thwarting?
must we be thwarting?
must you be thwarting?
must they be thwarting? 	must I have thwarted?
must you have thwarted?
must she have thwarted?
must we have thwarted?
must you have thwarted?
must they have thwarted? 	must I have been thwarting?
must you have been thwarting?
must she have been thwarting?
must we have been thwarting?
must you have been thwarting?
must they have been thwarting? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not thwart?
must you not thwart?
must she not thwart?
must we not thwart?
must you not thwart?
must they not thwart? 	must I not be thwarting?
must you not be thwarting?
must she not be thwarting?
must we not be thwarting?
must you not be thwarting?
must they not be thwarting? 	must I not have thwarted?
must you not have thwarted?
must she not have thwarted?
must we not have thwarted?
must you not have thwarted?
must they not have thwarted? 	must I not have been thwarting?
must you not have been thwarting?
must she not have been thwarting?
must we not have been thwarting?
must you not have been thwarting?
must they not have been thwarting?