We use it when you need to use subjonctif for an action done in the past if the predicate of the main clause is in the past tense. We only use it in writing, in speech it is replaced by subjonctif passé .
Formation: subjonctif imparfait of the verbs être or avoir (formation of compound tenses) + form of
| singulier | pluriel | |
| 1 | eusse parlé | eussions parlé |
| 2 | eusses parlé | eussiez parlé |
| 3 | eût parlé | eussent parlé |
| singulier | pluriel | |
| 1 | fusse venu | fussions venus |
| 2 | fusses venu | fussiez venus |
| 3 | fût venu | fussent venus |