Conjugación del verbo inglés
MUST OBSTRUCT

Verbo regular: obstruct - obstructed - obstructed

Afirmación

Forma simple	Forma con V-ing
I must obstruct you must obstruct he must obstruct we must obstruct you must obstruct they must obstruct	I must be obstructing you must be obstructing he must be obstructing we must be obstructing you must be obstructing they must be obstructing
Perfecto	Perfecto con V-ing
I must have obstructed you must have obstructed he must have obstructed we must have obstructed you must have obstructed they must have obstructed	I must have been obstructing you must have been obstructing he must have been obstructing we must have been obstructing you must have been obstructing they must have been obstructing

Negación

Forma simple	Forma con V-ing
I must not obstruct you must not obstruct he must not obstruct we must not obstruct you must not obstruct they must not obstruct	I must not be obstructing you must not be obstructing he must not be obstructing we must not be obstructing you must not be obstructing they must not be obstructing
Perfecto	Perfecto con V-ing
I must not have obstructed you must not have obstructed he must not have obstructed we must not have obstructed you must not have obstructed they must not have obstructed	I must not have been obstructing you must not have been obstructing he must not have been obstructing we must not have been obstructing you must not have been obstructing they must not have been obstructing

Forma interrogativa

Forma simple	Forma con V-ing
must I obstruct? must you obstruct? must he obstruct? must we obstruct? must you obstruct? must they obstruct?	must I be obstructing? must you be obstructing? must he be obstructing? must we be obstructing? must you be obstructing? must they be obstructing?
Perfecto	Perfecto con V-ing
must I have obstructed? must you have obstructed? must he have obstructed? must we have obstructed? must you have obstructed? must they have obstructed?	must I have been obstructing? must you have been obstructing? must he have been obstructing? must we have been obstructing? must you have been obstructing? must they have been obstructing?

Forma interro-negativa

Forma simple	Forma con V-ing
must I not obstruct? must you not obstruct? must he not obstruct? must we not obstruct? must you not obstruct? must they not obstruct?	must I not be obstructing? must you not be obstructing? must he not be obstructing? must we not be obstructing? must you not be obstructing? must they not be obstructing?
Perfecto	Perfecto con V-ing
must I not have obstructed? must you not have obstructed? must he not have obstructed? must we not have obstructed? must you not have obstructed? must they not have obstructed?	must I not have been obstructing? must you not have been obstructing? must he not have been obstructing? must we not have been obstructing? must you not have been obstructing? must they not have been obstructing?