... get rid of the -tir for the singular and add -s, -s, -t. Now for the plural, bring back the t from the infinitive and add -ons, -ez, -ent. For the verb servir,drop the -vir from the infinitive, ... singular and third person plural and anotherfor the nous and vous forms. To begin the conjugation, get rid of -enir from the infini-tive and add -iens, -iens, -ient, or -iennent for the singular ... interdire, and prédire end in -disez. The verb boire (to drink) is in a place all its own. It starts out like the other irregular -re verbs. Drop the -re from the infinitive, and add -s, -s, -t...