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This is used in a sentence when there is something in a future tense, but this action is also in the future, but before the other future. This is called the "futur anterieur" in French.
- The future anterior is a compound tense—it consists of two verbs, the auxiliary verb and the past participle one seeks to use in this tense.
- The auxiliary verb is conjugated as if it were being used in the future indicative.
- The past participle is added immediately after the auxiliary verb.
- A negative structure such as ne ... pas is always placed around the auxiliary verb, not the past participle.