Verbe régulier : ascertain - ascertained - ascertained
Traduction française : établir - constater
Forme simple | Forme en V-ing |
I must ascertain you must ascertain she must ascertain we must ascertain you must ascertain they must ascertain | I must be ascertaining you must be ascertaining she must be ascertaining we must be ascertaining you must be ascertaining they must be ascertaining |
Perfect | Perfect en V-ing |
I must have ascertained you must have ascertained she must have ascertained we must have ascertained you must have ascertained they must have ascertained | I must have been ascertaining you must have been ascertaining she must have been ascertaining we must have been ascertaining you must have been ascertaining they must have been ascertaining |
Forme simple | Forme en V-ing |
I mustn't ascertain you mustn't ascertain she mustn't ascertain we mustn't ascertain you mustn't ascertain they mustn't ascertain | I mustn't be ascertaining you mustn't be ascertaining she mustn't be ascertaining we mustn't be ascertaining you mustn't be ascertaining they mustn't be ascertaining |
Perfect | Perfect en V-ing |
I mustn't have ascertained you mustn't have ascertained she mustn't have ascertained we mustn't have ascertained you mustn't have ascertained they mustn't have ascertained | I mustn't have been ascertaining you mustn't have been ascertaining she mustn't have been ascertaining we mustn't have been ascertaining you mustn't have been ascertaining they mustn't have been ascertaining |
Forme simple | Forme en V-ing |
must I ascertain? must you ascertain? must she ascertain? must we ascertain? must you ascertain? must they ascertain? | must I be ascertaining? must you be ascertaining? must she be ascertaining? must we be ascertaining? must you be ascertaining? must they be ascertaining? |
Perfect | Perfect en V-ing |
must I have ascertained? must you have ascertained? must she have ascertained? must we have ascertained? must you have ascertained? must they have ascertained? | must I have been ascertaining? must you have been ascertaining? must she have been ascertaining? must we have been ascertaining? must you have been ascertaining? must they have been ascertaining? |
Forme simple | Forme en V-ing |
mustn't I ascertain? mustn't you ascertain? mustn't she ascertain? mustn't we ascertain? mustn't you ascertain? mustn't they ascertain? | mustn't I be ascertaining? mustn't you be ascertaining? mustn't she be ascertaining? mustn't we be ascertaining? mustn't you be ascertaining? mustn't they be ascertaining? |
Perfect | Perfect en V-ing |
mustn't I have ascertained? mustn't you have ascertained? mustn't she have ascertained? mustn't we have ascertained? mustn't you have ascertained? mustn't they have ascertained? | mustn't I have been ascertaining? mustn't you have been ascertaining? mustn't she have been ascertaining? mustn't we have been ascertaining? mustn't you have been ascertaining? mustn't they have been ascertaining? |