Conjugação do verbo inglês
MAY ASCERTAIN

Verbo regular: ascertain - ascertained - ascertained

Afirmação

Forma simple	Forma com V-ing
I may ascertain you may ascertain she may ascertain we may ascertain you may ascertain they may ascertain	I may be ascertaining you may be ascertaining she may be ascertaining we may be ascertaining you may be ascertaining they may be ascertaining
Perfeito	Perfeito com V-ing
I may have ascertained you may have ascertained she may have ascertained we may have ascertained you may have ascertained they may have ascertained	I may have been ascertaining you may have been ascertaining she may have been ascertaining we may have been ascertaining you may have been ascertaining they may have been ascertaining

Negação

Forma simple	Forma com V-ing
I may not ascertain you may not ascertain she may not ascertain we may not ascertain you may not ascertain they may not ascertain	I may not be ascertaining you may not be ascertaining she may not be ascertaining we may not be ascertaining you may not be ascertaining they may not be ascertaining
Perfeito	Perfeito com V-ing
I may not have ascertained you may not have ascertained she may not have ascertained we may not have ascertained you may not have ascertained they may not have ascertained	I may not have been ascertaining you may not have been ascertaining she may not have been ascertaining we may not have been ascertaining you may not have been ascertaining they may not have been ascertaining

Forma interrogativa

Forma simple	Forma com V-ing
may I ascertain? may you ascertain? may she ascertain? may we ascertain? may you ascertain? may they ascertain?	may I be ascertaining? may you be ascertaining? may she be ascertaining? may we be ascertaining? may you be ascertaining? may they be ascertaining?
Perfeito	Perfeito com V-ing
may I have ascertained? may you have ascertained? may she have ascertained? may we have ascertained? may you have ascertained? may they have ascertained?	may I have been ascertaining? may you have been ascertaining? may she have been ascertaining? may we have been ascertaining? may you have been ascertaining? may they have been ascertaining?

Forma interro-Negação

Forma simple	Forma com V-ing
may I not ascertain? may you not ascertain? may she not ascertain? may we not ascertain? may you not ascertain? may they not ascertain?	may I not be ascertaining? may you not be ascertaining? may she not be ascertaining? may we not be ascertaining? may you not be ascertaining? may they not be ascertaining?
Perfeito	Perfeito com V-ing
may I not have ascertained? may you not have ascertained? may she not have ascertained? may we not have ascertained? may you not have ascertained? may they not have ascertained?	may I not have been ascertaining? may you not have been ascertaining? may she not have been ascertaining? may we not have been ascertaining? may you not have been ascertaining? may they not have been ascertaining?