I should ascertain you should ascertain she should ascertain we should ascertain you should ascertain they should ascertain
Forme en V-ing
I should be ascertaining you should be ascertaining she should be ascertaining we should be ascertaining you should be ascertaining they should be ascertaining
Perfect
I should have ascertained you should have ascertained she should have ascertained we should have ascertained you should have ascertained they should have ascertained
Perfect en V-ing
I should have been ascertaining you should have been ascertaining she should have been ascertaining we should have been ascertaining you should have been ascertaining they should have been ascertaining
Négation
Forme simple
I should not ascertain you should not ascertain she should not ascertain we should not ascertain you should not ascertain they should not ascertain
Forme en V-ing
I should not be ascertaining you should not be ascertaining she should not be ascertaining we should not be ascertaining you should not be ascertaining they should not be ascertaining
Perfect
I should not have ascertained you should not have ascertained she should not have ascertained we should not have ascertained you should not have ascertained they should not have ascertained
Perfect en V-ing
I should not have been ascertaining you should not have been ascertaining she should not have been ascertaining we should not have been ascertaining you should not have been ascertaining they should not have been ascertaining
Forme interrogative
Forme simple
should I ascertain? should you ascertain? should she ascertain? should we ascertain? should you ascertain? should they ascertain?
Forme en V-ing
should I be ascertaining? should you be ascertaining? should she be ascertaining? should we be ascertaining? should you be ascertaining? should they be ascertaining?
Perfect
should I have ascertained? should you have ascertained? should she have ascertained? should we have ascertained? should you have ascertained? should they have ascertained?
Perfect en V-ing
should I have been ascertaining? should you have been ascertaining? should she have been ascertaining? should we have been ascertaining? should you have been ascertaining? should they have been ascertaining?
Forme interro-négative
Forme simple
should I not ascertain? should you not ascertain? should she not ascertain? should we not ascertain? should you not ascertain? should they not ascertain?
Forme en V-ing
should I not be ascertaining? should you not be ascertaining? should she not be ascertaining? should we not be ascertaining? should you not be ascertaining? should they not be ascertaining?
Perfect
should I not have ascertained? should you not have ascertained? should she not have ascertained? should we not have ascertained? should you not have ascertained? should they not have ascertained?
Perfect en V-ing
should I not have been ascertaining? should you not have been ascertaining? should she not have been ascertaining? should we not have been ascertaining? should you not have been ascertaining? should they not have been ascertaining?