I'll be ascertaining you'll be ascertaining he'll be ascertaining we'll be ascertaining you'll be ascertaining they'll be ascertaining
Perfect
I'll have ascertained you'll have ascertained he'll have ascertained we'll have ascertained you'll have ascertained they'll have ascertained
V-ing perfect
I'll have been ascertaining you'll have been ascertaining he'll have been ascertaining we'll have been ascertaining you'll have been ascertaining they'll have been ascertaining
Negation
Simple form
I won't ascertain you won't ascertain he won't ascertain we won't ascertain you won't ascertain they won't ascertain
V-ing form
I won't be ascertaining you won't be ascertaining he won't be ascertaining we won't be ascertaining you won't be ascertaining they won't be ascertaining
Perfect
I won't have ascertained you won't have ascertained he won't have ascertained we won't have ascertained you won't have ascertained they won't have ascertained
V-ing perfect
I won't have been ascertaining you won't have been ascertaining he won't have been ascertaining we won't have been ascertaining you won't have been ascertaining they won't have been ascertaining
Interrogative form
Simple form
will I ascertain? will you ascertain? will he ascertain? will we ascertain? will you ascertain? will they ascertain?
V-ing form
will I be ascertaining? will you be ascertaining? will he be ascertaining? will we be ascertaining? will you be ascertaining? will they be ascertaining?
Perfect
will I have ascertained? will you have ascertained? will he have ascertained? will we have ascertained? will you have ascertained? will they have ascertained?
V-ing perfect
will I have been ascertaining? will you have been ascertaining? will he have been ascertaining? will we have been ascertaining? will you have been ascertaining? will they have been ascertaining?
Interro-negative form
Simple form
won't I ascertain? won't you ascertain? won't he ascertain? won't we ascertain? won't you ascertain? won't they ascertain?
V-ing form
won't I be ascertaining? won't you be ascertaining? won't he be ascertaining? won't we be ascertaining? won't you be ascertaining? won't they be ascertaining?
Perfect
won't I have ascertained? won't you have ascertained? won't he have ascertained? won't we have ascertained? won't you have ascertained? won't they have ascertained?
V-ing perfect
won't I have been ascertaining? won't you have been ascertaining? won't he have been ascertaining? won't we have been ascertaining? won't you have been ascertaining? won't they have been ascertaining?