must rust
Verbe régulier : rust - rusted- rusted
Traduction française : rouiller - rouiller 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must rust
you must rust
she must rust
we must rust
you must rust
they must rust 	I must be rusting
you must be rusting
she must be rusting
we must be rusting
you must be rusting
they must be rusting	I must have rusted
you must have rusted
she must have rusted
we must have rusted
you must have rusted
they must have rusted	I must have been rusting
you must have been rusting
she must have been rusting
we must have been rusting
you must have been rusting
they must have been rusting	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't rust
you mustn't rust
she mustn't rust
we mustn't rust
you mustn't rust
they mustn't rust 	I mustn't be rusting
you mustn't be rusting
she mustn't be rusting
we mustn't be rusting
you mustn't be rusting
they mustn't be rusting	I mustn't have rusted
you mustn't have rusted
she mustn't have rusted
we mustn't have rusted
you mustn't have rusted
they mustn't have rusted	I mustn't have been rusting
you mustn't have been rusting
she mustn't have been rusting
we mustn't have been rusting
you mustn't have been rusting
they mustn't have been rusting	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I rust?
must you rust?
must she rust?
must we rust?
must you rust?
must they rust? 	must I be rusting?
must you be rusting?
must she be rusting?
must we be rusting?
must you be rusting?
must they be rusting? 	must I have rusted?
must you have rusted?
must she have rusted?
must we have rusted?
must you have rusted?
must they have rusted? 	must I have been rusting?
must you have been rusting?
must she have been rusting?
must we have been rusting?
must you have been rusting?
must they have been rusting? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I rust?
mustn't you rust?
mustn't she rust?
mustn't we rust?
mustn't you rust?
mustn't they rust? 	mustn't I be rusting?
mustn't you be rusting?
mustn't she be rusting?
mustn't we be rusting?
mustn't you be rusting?
mustn't they be rusting? 	mustn't I have rusted?
mustn't you have rusted?
mustn't she have rusted?
mustn't we have rusted?
mustn't you have rusted?
mustn't they have rusted? 	mustn't I have been rusting?
mustn't you have been rusting?
mustn't she have been rusting?
mustn't we have been rusting?
mustn't you have been rusting?
mustn't they have been rusting?