Conjugación del verbo inglés
MUST DECREASE

Verbo regular: decrease - decreased - decreased

Afirmación

Forma simple	Forma con V-ing
I must decrease you must decrease she must decrease we must decrease you must decrease they must decrease	I must be decreasing you must be decreasing she must be decreasing we must be decreasing you must be decreasing they must be decreasing
Perfecto	Perfecto con V-ing
I must have decreased you must have decreased she must have decreased we must have decreased you must have decreased they must have decreased	I must have been decreasing you must have been decreasing she must have been decreasing we must have been decreasing you must have been decreasing they must have been decreasing

Negación

Forma simple	Forma con V-ing
I mustn't decrease you mustn't decrease she mustn't decrease we mustn't decrease you mustn't decrease they mustn't decrease	I mustn't be decreasing you mustn't be decreasing she mustn't be decreasing we mustn't be decreasing you mustn't be decreasing they mustn't be decreasing
Perfecto	Perfecto con V-ing
I mustn't have decreased you mustn't have decreased she mustn't have decreased we mustn't have decreased you mustn't have decreased they mustn't have decreased	I mustn't have been decreasing you mustn't have been decreasing she mustn't have been decreasing we mustn't have been decreasing you mustn't have been decreasing they mustn't have been decreasing

Forma interrogativa

Forma simple	Forma con V-ing
must I decrease? must you decrease? must she decrease? must we decrease? must you decrease? must they decrease?	must I be decreasing? must you be decreasing? must she be decreasing? must we be decreasing? must you be decreasing? must they be decreasing?
Perfecto	Perfecto con V-ing
must I have decreased? must you have decreased? must she have decreased? must we have decreased? must you have decreased? must they have decreased?	must I have been decreasing? must you have been decreasing? must she have been decreasing? must we have been decreasing? must you have been decreasing? must they have been decreasing?

Forma interro-negativa

Forma simple	Forma con V-ing
mustn't I decrease? mustn't you decrease? mustn't she decrease? mustn't we decrease? mustn't you decrease? mustn't they decrease?	mustn't I be decreasing? mustn't you be decreasing? mustn't she be decreasing? mustn't we be decreasing? mustn't you be decreasing? mustn't they be decreasing?
Perfecto	Perfecto con V-ing
mustn't I have decreased? mustn't you have decreased? mustn't she have decreased? mustn't we have decreased? mustn't you have decreased? mustn't they have decreased?	mustn't I have been decreasing? mustn't you have been decreasing? mustn't she have been decreasing? mustn't we have been decreasing? mustn't you have been decreasing? mustn't they have been decreasing?