must de-ice
Verbe régulier : de-ice - de-iced- de-iced
Traduction française : dégivrer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must de-ice
you must de-ice
he must de-ice
we must de-ice
you must de-ice
they must de-ice 	I must be de-icing
you must be de-icing
he must be de-icing
we must be de-icing
you must be de-icing
they must be de-icing	I must have de-iced
you must have de-iced
he must have de-iced
we must have de-iced
you must have de-iced
they must have de-iced	I must have been de-icing
you must have been de-icing
he must have been de-icing
we must have been de-icing
you must have been de-icing
they must have been de-icing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not de-ice
you must not de-ice
he must not de-ice
we must not de-ice
you must not de-ice
they must not de-ice 	I must not be de-icing
you must not be de-icing
he must not be de-icing
we must not be de-icing
you must not be de-icing
they must not be de-icing	I must not have de-iced
you must not have de-iced
he must not have de-iced
we must not have de-iced
you must not have de-iced
they must not have de-iced	I must not have been de-icing
you must not have been de-icing
he must not have been de-icing
we must not have been de-icing
you must not have been de-icing
they must not have been de-icing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I de-ice?
must you de-ice?
must he de-ice?
must we de-ice?
must you de-ice?
must they de-ice? 	must I be de-icing?
must you be de-icing?
must he be de-icing?
must we be de-icing?
must you be de-icing?
must they be de-icing? 	must I have de-iced?
must you have de-iced?
must he have de-iced?
must we have de-iced?
must you have de-iced?
must they have de-iced? 	must I have been de-icing?
must you have been de-icing?
must he have been de-icing?
must we have been de-icing?
must you have been de-icing?
must they have been de-icing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not de-ice?
must you not de-ice?
must he not de-ice?
must we not de-ice?
must you not de-ice?
must they not de-ice? 	must I not be de-icing?
must you not be de-icing?
must he not be de-icing?
must we not be de-icing?
must you not be de-icing?
must they not be de-icing? 	must I not have de-iced?
must you not have de-iced?
must he not have de-iced?
must we not have de-iced?
must you not have de-iced?
must they not have de-iced? 	must I not have been de-icing?
must you not have been de-icing?
must he not have been de-icing?
must we not have been de-icing?
must you not have been de-icing?
must they not have been de-icing?