must screen
Verbe régulier : screen - screened- screened
Traduction française : projeter - protéger 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must screen
you must screen
he must screen
we must screen
you must screen
they must screen 	I must be screening
you must be screening
he must be screening
we must be screening
you must be screening
they must be screening	I must have screened
you must have screened
he must have screened
we must have screened
you must have screened
they must have screened	I must have been screening
you must have been screening
he must have been screening
we must have been screening
you must have been screening
they must have been screening	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not screen
you must not screen
he must not screen
we must not screen
you must not screen
they must not screen 	I must not be screening
you must not be screening
he must not be screening
we must not be screening
you must not be screening
they must not be screening	I must not have screened
you must not have screened
he must not have screened
we must not have screened
you must not have screened
they must not have screened	I must not have been screening
you must not have been screening
he must not have been screening
we must not have been screening
you must not have been screening
they must not have been screening	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I screen?
must you screen?
must he screen?
must we screen?
must you screen?
must they screen? 	must I be screening?
must you be screening?
must he be screening?
must we be screening?
must you be screening?
must they be screening? 	must I have screened?
must you have screened?
must he have screened?
must we have screened?
must you have screened?
must they have screened? 	must I have been screening?
must you have been screening?
must he have been screening?
must we have been screening?
must you have been screening?
must they have been screening? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not screen?
must you not screen?
must he not screen?
must we not screen?
must you not screen?
must they not screen? 	must I not be screening?
must you not be screening?
must he not be screening?
must we not be screening?
must you not be screening?
must they not be screening? 	must I not have screened?
must you not have screened?
must he not have screened?
must we not have screened?
must you not have screened?
must they not have screened? 	must I not have been screening?
must you not have been screening?
must he not have been screening?
must we not have been screening?
must you not have been screening?
must they not have been screening?