Conjugación del verbo inglés
MUST UNDERACHIEVE

Verbo regular: underachieve - underachieved - underachieved

Afirmación

Forma simple	Forma con V-ing
I must underachieve you must underachieve he must underachieve we must underachieve you must underachieve they must underachieve	I must be underachieving you must be underachieving he must be underachieving we must be underachieving you must be underachieving they must be underachieving
Perfecto	Perfecto con V-ing
I must have underachieved you must have underachieved he must have underachieved we must have underachieved you must have underachieved they must have underachieved	I must have been underachieving you must have been underachieving he must have been underachieving we must have been underachieving you must have been underachieving they must have been underachieving

Negación

Forma simple	Forma con V-ing
I mustn't underachieve you mustn't underachieve he mustn't underachieve we mustn't underachieve you mustn't underachieve they mustn't underachieve	I mustn't be underachieving you mustn't be underachieving he mustn't be underachieving we mustn't be underachieving you mustn't be underachieving they mustn't be underachieving
Perfecto	Perfecto con V-ing
I mustn't have underachieved you mustn't have underachieved he mustn't have underachieved we mustn't have underachieved you mustn't have underachieved they mustn't have underachieved	I mustn't have been underachieving you mustn't have been underachieving he mustn't have been underachieving we mustn't have been underachieving you mustn't have been underachieving they mustn't have been underachieving

Forma interrogativa

Forma simple	Forma con V-ing
must I underachieve? must you underachieve? must he underachieve? must we underachieve? must you underachieve? must they underachieve?	must I be underachieving? must you be underachieving? must he be underachieving? must we be underachieving? must you be underachieving? must they be underachieving?
Perfecto	Perfecto con V-ing
must I have underachieved? must you have underachieved? must he have underachieved? must we have underachieved? must you have underachieved? must they have underachieved?	must I have been underachieving? must you have been underachieving? must he have been underachieving? must we have been underachieving? must you have been underachieving? must they have been underachieving?

Forma interro-negativa

Forma simple	Forma con V-ing
mustn't I underachieve? mustn't you underachieve? mustn't he underachieve? mustn't we underachieve? mustn't you underachieve? mustn't they underachieve?	mustn't I be underachieving? mustn't you be underachieving? mustn't he be underachieving? mustn't we be underachieving? mustn't you be underachieving? mustn't they be underachieving?
Perfecto	Perfecto con V-ing
mustn't I have underachieved? mustn't you have underachieved? mustn't he have underachieved? mustn't we have underachieved? mustn't you have underachieved? mustn't they have underachieved?	mustn't I have been underachieving? mustn't you have been underachieving? mustn't he have been underachieving? mustn't we have been underachieving? mustn't you have been underachieving? mustn't they have been underachieving?