must swim
Verbe irrégulier : swim - swam- swum
Traduction française : nager 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must swim
you must swim
she must swim
we must swim
you must swim
they must swim 	I must be swimming
you must be swimming
she must be swimming
we must be swimming
you must be swimming
they must be swimming	I must have swum
you must have swum
she must have swum
we must have swum
you must have swum
they must have swum	I must have been swimming
you must have been swimming
she must have been swimming
we must have been swimming
you must have been swimming
they must have been swimming	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not swim
you must not swim
she must not swim
we must not swim
you must not swim
they must not swim 	I must not be swimming
you must not be swimming
she must not be swimming
we must not be swimming
you must not be swimming
they must not be swimming	I must not have swum
you must not have swum
she must not have swum
we must not have swum
you must not have swum
they must not have swum	I must not have been swimming
you must not have been swimming
she must not have been swimming
we must not have been swimming
you must not have been swimming
they must not have been swimming	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I swim?
must you swim?
must she swim?
must we swim?
must you swim?
must they swim? 	must I be swimming?
must you be swimming?
must she be swimming?
must we be swimming?
must you be swimming?
must they be swimming? 	must I have swum?
must you have swum?
must she have swum?
must we have swum?
must you have swum?
must they have swum? 	must I have been swimming?
must you have been swimming?
must she have been swimming?
must we have been swimming?
must you have been swimming?
must they have been swimming? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not swim?
must you not swim?
must she not swim?
must we not swim?
must you not swim?
must they not swim? 	must I not be swimming?
must you not be swimming?
must she not be swimming?
must we not be swimming?
must you not be swimming?
must they not be swimming? 	must I not have swum?
must you not have swum?
must she not have swum?
must we not have swum?
must you not have swum?
must they not have swum? 	must I not have been swimming?
must you not have been swimming?
must she not have been swimming?
must we not have been swimming?
must you not have been swimming?
must they not have been swimming?