
Verbe régulier : undertain - undertained - undertained
Présent | Présent continu | Prétérit | Prétérit continu | 
| I don't undertain you don't undertain he doesn't undertain we don't undertain you don't undertain they don't undertain  | I'm not undertaining you aren't undertaining he isn't undertaining we aren't undertaining you aren't undertaining they aren't undertaining  | I didn't undertain you didn't undertain he didn't undertain we didn't undertain you didn't undertain they didn't undertain  | I wasn't undertaining you weren't undertaining he wasn't undertaining we weren't undertaining you weren't undertaining they weren't undertaining  | 
Present perfect | Present perfect continu | Pluperfect | Pluperfect continu | 
| I haven't undertained you haven't undertained he hasn't undertained we haven't undertained you haven't undertained they haven't undertained  | I haven't  been undertaining you haven't been undertaining he hasn't been undertaining we haven't been undertaining you haven't been undertaining they haven't been undertaining  | I hadn't undertained you hadn't undertained he hadn't undertained we hadn't undertained you hadn't undertained they hadn't undertained  | I hadn't been undertaining you hadn't been undertaining he hadn't been undertaining we hadn't been undertaining you hadn't been undertaining they hadn't been undertaining  | 
Futur | Futur continu | Futur antérieur | Futur antérieur continu | 
| I won't undertain you won't undertain he won't undertain we won't undertain you won't undertain they won't undertain  | I won't be undertaining you won't be undertaining he won't be undertaining we won't be undertaining you won't be undertaining they won't be undertaining  | I won't have undertained you won't have undertained he won't have undertained we won't have undertained you won't have undertained they won't have undertained  | I won't have been undertaining you won't have been undertaining he won't have been undertaining we won't have been undertaining you won't have been undertaining they won't have been undertaining  | 
Présent | Présent continu | Passé | Passé continu | 
| I wouldn't undertain you wouldn't undertain he wouldn't undertain we wouldn't undertain you wouldn't undertain they wouldn't undertain  | I wouldn't be undertaining you wouldn't be undertaining he wouldn't be undertaining we wouldn't be undertaining you wouldn't be undertaining they wouldn't be undertaining  | I wouldn't have undertained you wouldn't have undertained he wouldn't have undertained we wouldn't have undertained you wouldn't have undertained they wouldn't have undertained  | I wouldn't have been undertaining you wouldn't have been undertaining he wouldn't have been undertaining we wouldn't have been undertaining you wouldn't have been undertaining they wouldn't have been undertaining  | 
Infinitif | Impératif | 
Infinitif | Impératif | ||
| to undertain | do not undertain Let's not undertain do not undertain  | 
Présent | Passé | ||
| undertaining | undertained |