must sit
Verbe irrégulier : sit - sat- sat
Traduction française : être assis 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must sit
you must sit
he must sit
we must sit
you must sit
they must sit 	I must be sitting
you must be sitting
he must be sitting
we must be sitting
you must be sitting
they must be sitting	I must have sat
you must have sat
he must have sat
we must have sat
you must have sat
they must have sat	I must have been sitting
you must have been sitting
he must have been sitting
we must have been sitting
you must have been sitting
they must have been sitting	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not sit
you must not sit
he must not sit
we must not sit
you must not sit
they must not sit 	I must not be sitting
you must not be sitting
he must not be sitting
we must not be sitting
you must not be sitting
they must not be sitting	I must not have sat
you must not have sat
he must not have sat
we must not have sat
you must not have sat
they must not have sat	I must not have been sitting
you must not have been sitting
he must not have been sitting
we must not have been sitting
you must not have been sitting
they must not have been sitting	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I sit?
must you sit?
must he sit?
must we sit?
must you sit?
must they sit? 	must I be sitting?
must you be sitting?
must he be sitting?
must we be sitting?
must you be sitting?
must they be sitting? 	must I have sat?
must you have sat?
must he have sat?
must we have sat?
must you have sat?
must they have sat? 	must I have been sitting?
must you have been sitting?
must he have been sitting?
must we have been sitting?
must you have been sitting?
must they have been sitting? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not sit?
must you not sit?
must he not sit?
must we not sit?
must you not sit?
must they not sit? 	must I not be sitting?
must you not be sitting?
must he not be sitting?
must we not be sitting?
must you not be sitting?
must they not be sitting? 	must I not have sat?
must you not have sat?
must he not have sat?
must we not have sat?
must you not have sat?
must they not have sat? 	must I not have been sitting?
must you not have been sitting?
must he not have been sitting?
must we not have been sitting?
must you not have been sitting?
must they not have been sitting?