Conjugação do verbo inglês
MUST UNDERTAIN

Verbo regular: undertain - undertained - undertained

Afirmação

Forma simple	Forma com V-ing
I must undertain you must undertain he must undertain we must undertain you must undertain they must undertain	I must be undertaining you must be undertaining he must be undertaining we must be undertaining you must be undertaining they must be undertaining
Perfeito	Perfeito com V-ing
I must have undertained you must have undertained he must have undertained we must have undertained you must have undertained they must have undertained	I must have been undertaining you must have been undertaining he must have been undertaining we must have been undertaining you must have been undertaining they must have been undertaining

Negação

Forma simple	Forma com V-ing
I must not undertain you must not undertain he must not undertain we must not undertain you must not undertain they must not undertain	I must not be undertaining you must not be undertaining he must not be undertaining we must not be undertaining you must not be undertaining they must not be undertaining
Perfeito	Perfeito com V-ing
I must not have undertained you must not have undertained he must not have undertained we must not have undertained you must not have undertained they must not have undertained	I must not have been undertaining you must not have been undertaining he must not have been undertaining we must not have been undertaining you must not have been undertaining they must not have been undertaining

Forma interrogativa

Forma simple	Forma com V-ing
must I undertain? must you undertain? must he undertain? must we undertain? must you undertain? must they undertain?	must I be undertaining? must you be undertaining? must he be undertaining? must we be undertaining? must you be undertaining? must they be undertaining?
Perfeito	Perfeito com V-ing
must I have undertained? must you have undertained? must he have undertained? must we have undertained? must you have undertained? must they have undertained?	must I have been undertaining? must you have been undertaining? must he have been undertaining? must we have been undertaining? must you have been undertaining? must they have been undertaining?

Forma interro-Negação

Forma simple	Forma com V-ing
must I not undertain? must you not undertain? must he not undertain? must we not undertain? must you not undertain? must they not undertain?	must I not be undertaining? must you not be undertaining? must he not be undertaining? must we not be undertaining? must you not be undertaining? must they not be undertaining?
Perfeito	Perfeito com V-ing
must I not have undertained? must you not have undertained? must he not have undertained? must we not have undertained? must you not have undertained? must they not have undertained?	must I not have been undertaining? must you not have been undertaining? must he not have been undertaining? must we not have been undertaining? must you not have been undertaining? must they not have been undertaining?