must engineer
Verbe régulier : engineer - engineered- engineered
Traduction française : concevoir - manigancer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must engineer
you must engineer
she must engineer
we must engineer
you must engineer
they must engineer 	I must be engineering
you must be engineering
she must be engineering
we must be engineering
you must be engineering
they must be engineering	I must have engineered
you must have engineered
she must have engineered
we must have engineered
you must have engineered
they must have engineered	I must have been engineering
you must have been engineering
she must have been engineering
we must have been engineering
you must have been engineering
they must have been engineering	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not engineer
you must not engineer
she must not engineer
we must not engineer
you must not engineer
they must not engineer 	I must not be engineering
you must not be engineering
she must not be engineering
we must not be engineering
you must not be engineering
they must not be engineering	I must not have engineered
you must not have engineered
she must not have engineered
we must not have engineered
you must not have engineered
they must not have engineered	I must not have been engineering
you must not have been engineering
she must not have been engineering
we must not have been engineering
you must not have been engineering
they must not have been engineering	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I engineer?
must you engineer?
must she engineer?
must we engineer?
must you engineer?
must they engineer? 	must I be engineering?
must you be engineering?
must she be engineering?
must we be engineering?
must you be engineering?
must they be engineering? 	must I have engineered?
must you have engineered?
must she have engineered?
must we have engineered?
must you have engineered?
must they have engineered? 	must I have been engineering?
must you have been engineering?
must she have been engineering?
must we have been engineering?
must you have been engineering?
must they have been engineering? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not engineer?
must you not engineer?
must she not engineer?
must we not engineer?
must you not engineer?
must they not engineer? 	must I not be engineering?
must you not be engineering?
must she not be engineering?
must we not be engineering?
must you not be engineering?
must they not be engineering? 	must I not have engineered?
must you not have engineered?
must she not have engineered?
must we not have engineered?
must you not have engineered?
must they not have engineered? 	must I not have been engineering?
must you not have been engineering?
must she not have been engineering?
must we not have been engineering?
must you not have been engineering?
must they not have been engineering?