Conjugación del verbo inglés
MUST PRETREAT

Verbo regular: pretreat - pretreated - pretreated

Afirmación

Forma simple	Forma con V-ing
I must pretreat you must pretreat he must pretreat we must pretreat you must pretreat they must pretreat	I must be pretreating you must be pretreating he must be pretreating we must be pretreating you must be pretreating they must be pretreating
Perfecto	Perfecto con V-ing
I must have pretreated you must have pretreated he must have pretreated we must have pretreated you must have pretreated they must have pretreated	I must have been pretreating you must have been pretreating he must have been pretreating we must have been pretreating you must have been pretreating they must have been pretreating

Negación

Forma simple	Forma con V-ing
I mustn't pretreat you mustn't pretreat he mustn't pretreat we mustn't pretreat you mustn't pretreat they mustn't pretreat	I mustn't be pretreating you mustn't be pretreating he mustn't be pretreating we mustn't be pretreating you mustn't be pretreating they mustn't be pretreating
Perfecto	Perfecto con V-ing
I mustn't have pretreated you mustn't have pretreated he mustn't have pretreated we mustn't have pretreated you mustn't have pretreated they mustn't have pretreated	I mustn't have been pretreating you mustn't have been pretreating he mustn't have been pretreating we mustn't have been pretreating you mustn't have been pretreating they mustn't have been pretreating

Forma interrogativa

Forma simple	Forma con V-ing
must I pretreat? must you pretreat? must he pretreat? must we pretreat? must you pretreat? must they pretreat?	must I be pretreating? must you be pretreating? must he be pretreating? must we be pretreating? must you be pretreating? must they be pretreating?
Perfecto	Perfecto con V-ing
must I have pretreated? must you have pretreated? must he have pretreated? must we have pretreated? must you have pretreated? must they have pretreated?	must I have been pretreating? must you have been pretreating? must he have been pretreating? must we have been pretreating? must you have been pretreating? must they have been pretreating?

Forma interro-negativa

Forma simple	Forma con V-ing
mustn't I pretreat? mustn't you pretreat? mustn't he pretreat? mustn't we pretreat? mustn't you pretreat? mustn't they pretreat?	mustn't I be pretreating? mustn't you be pretreating? mustn't he be pretreating? mustn't we be pretreating? mustn't you be pretreating? mustn't they be pretreating?
Perfecto	Perfecto con V-ing
mustn't I have pretreated? mustn't you have pretreated? mustn't he have pretreated? mustn't we have pretreated? mustn't you have pretreated? mustn't they have pretreated?	mustn't I have been pretreating? mustn't you have been pretreating? mustn't he have been pretreating? mustn't we have been pretreating? mustn't you have been pretreating? mustn't they have been pretreating?