I must de-ice you must de-ice he must de-ice we must de-ice you must de-ice they must de-ice
Forma com V-ing
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
Perfeito
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
Perfeito com V-ing
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
Negação
Forma simple
I mustn't de-ice you mustn't de-ice he mustn't de-ice we mustn't de-ice you mustn't de-ice they mustn't de-ice
Forma com V-ing
I mustn't be de-icing you mustn't be de-icing he mustn't be de-icing we mustn't be de-icing you mustn't be de-icing they mustn't be de-icing
Perfeito
I mustn't have de-iced you mustn't have de-iced he mustn't have de-iced we mustn't have de-iced you mustn't have de-iced they mustn't have de-iced
Perfeito com V-ing
I mustn't have been de-icing you mustn't have been de-icing he mustn't have been de-icing we mustn't have been de-icing you mustn't have been de-icing they mustn't have been de-icing
Forma interrogativa
Forma simple
must I de-ice? must you de-ice? must he de-ice? must we de-ice? must you de-ice? must they de-ice?
Forma com V-ing
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?
Perfeito
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?
Perfeito com V-ing
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?
Forma interro-Negação
Forma simple
mustn't I de-ice? mustn't you de-ice? mustn't he de-ice? mustn't we de-ice? mustn't you de-ice? mustn't they de-ice?
Forma com V-ing
mustn't I be de-icing? mustn't you be de-icing? mustn't he be de-icing? mustn't we be de-icing? mustn't you be de-icing? mustn't they be de-icing?
Perfeito
mustn't I have de-iced? mustn't you have de-iced? mustn't he have de-iced? mustn't we have de-iced? mustn't you have de-iced? mustn't they have de-iced?
Perfeito com V-ing
mustn't I have been de-icing? mustn't you have been de-icing? mustn't he have been de-icing? mustn't we have been de-icing? mustn't you have been de-icing? mustn't they have been de-icing?