Conjugación del verbo inglés
MUST CROSSRUFF

Verbo regular: crossruff - crossruffed - crossruffed

Afirmación

Forma simple	Forma con V-ing
I must crossruff you must crossruff she must crossruff we must crossruff you must crossruff they must crossruff	I must be crossruffing you must be crossruffing she must be crossruffing we must be crossruffing you must be crossruffing they must be crossruffing
Perfecto	Perfecto con V-ing
I must have crossruffed you must have crossruffed she must have crossruffed we must have crossruffed you must have crossruffed they must have crossruffed	I must have been crossruffing you must have been crossruffing she must have been crossruffing we must have been crossruffing you must have been crossruffing they must have been crossruffing

Negación

Forma simple	Forma con V-ing
I mustn't crossruff you mustn't crossruff she mustn't crossruff we mustn't crossruff you mustn't crossruff they mustn't crossruff	I mustn't be crossruffing you mustn't be crossruffing she mustn't be crossruffing we mustn't be crossruffing you mustn't be crossruffing they mustn't be crossruffing
Perfecto	Perfecto con V-ing
I mustn't have crossruffed you mustn't have crossruffed she mustn't have crossruffed we mustn't have crossruffed you mustn't have crossruffed they mustn't have crossruffed	I mustn't have been crossruffing you mustn't have been crossruffing she mustn't have been crossruffing we mustn't have been crossruffing you mustn't have been crossruffing they mustn't have been crossruffing

Forma interrogativa

Forma simple	Forma con V-ing
must I crossruff? must you crossruff? must she crossruff? must we crossruff? must you crossruff? must they crossruff?	must I be crossruffing? must you be crossruffing? must she be crossruffing? must we be crossruffing? must you be crossruffing? must they be crossruffing?
Perfecto	Perfecto con V-ing
must I have crossruffed? must you have crossruffed? must she have crossruffed? must we have crossruffed? must you have crossruffed? must they have crossruffed?	must I have been crossruffing? must you have been crossruffing? must she have been crossruffing? must we have been crossruffing? must you have been crossruffing? must they have been crossruffing?

Forma interro-negativa

Forma simple	Forma con V-ing
mustn't I crossruff? mustn't you crossruff? mustn't she crossruff? mustn't we crossruff? mustn't you crossruff? mustn't they crossruff?	mustn't I be crossruffing? mustn't you be crossruffing? mustn't she be crossruffing? mustn't we be crossruffing? mustn't you be crossruffing? mustn't they be crossruffing?
Perfecto	Perfecto con V-ing
mustn't I have crossruffed? mustn't you have crossruffed? mustn't she have crossruffed? mustn't we have crossruffed? mustn't you have crossruffed? mustn't they have crossruffed?	mustn't I have been crossruffing? mustn't you have been crossruffing? mustn't she have been crossruffing? mustn't we have been crossruffing? mustn't you have been crossruffing? mustn't they have been crossruffing?