must duck
Verbe régulier : duck - ducked- ducked
Traduction française : esquiver - se baisser vivement 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must duck
you must duck
he must duck
we must duck
you must duck
they must duck 	I must be ducking
you must be ducking
he must be ducking
we must be ducking
you must be ducking
they must be ducking	I must have ducked
you must have ducked
he must have ducked
we must have ducked
you must have ducked
they must have ducked	I must have been ducking
you must have been ducking
he must have been ducking
we must have been ducking
you must have been ducking
they must have been ducking	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't duck
you mustn't duck
he mustn't duck
we mustn't duck
you mustn't duck
they mustn't duck 	I mustn't be ducking
you mustn't be ducking
he mustn't be ducking
we mustn't be ducking
you mustn't be ducking
they mustn't be ducking	I mustn't have ducked
you mustn't have ducked
he mustn't have ducked
we mustn't have ducked
you mustn't have ducked
they mustn't have ducked	I mustn't have been ducking
you mustn't have been ducking
he mustn't have been ducking
we mustn't have been ducking
you mustn't have been ducking
they mustn't have been ducking	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I duck?
must you duck?
must he duck?
must we duck?
must you duck?
must they duck? 	must I be ducking?
must you be ducking?
must he be ducking?
must we be ducking?
must you be ducking?
must they be ducking? 	must I have ducked?
must you have ducked?
must he have ducked?
must we have ducked?
must you have ducked?
must they have ducked? 	must I have been ducking?
must you have been ducking?
must he have been ducking?
must we have been ducking?
must you have been ducking?
must they have been ducking? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I duck?
mustn't you duck?
mustn't he duck?
mustn't we duck?
mustn't you duck?
mustn't they duck? 	mustn't I be ducking?
mustn't you be ducking?
mustn't he be ducking?
mustn't we be ducking?
mustn't you be ducking?
mustn't they be ducking? 	mustn't I have ducked?
mustn't you have ducked?
mustn't he have ducked?
mustn't we have ducked?
mustn't you have ducked?
mustn't they have ducked? 	mustn't I have been ducking?
mustn't you have been ducking?
mustn't he have been ducking?
mustn't we have been ducking?
mustn't you have been ducking?
mustn't they have been ducking?