How do we form the pluperfect tense?

To form the pluperfect tense, we need two key ingredients: 1) the auxiliary verb, 2) the past participle of the main verb. The auxiliary verb will be either avoir or être depending on what type of main verb we're dealing with. More often than not, the auxiliary will be avoir as être is only used for reflexive verbs and a select few others which we can remember using the acronym DR & MRS. VANDERTRAMP. With the pluperfect tense, the auxiliary is in the imperfect tense.We then need to add the past participle of the main verb. This varies depending on the whether we are dealing with an ER-ending infinitive, an RE-ending infinitive or an IR-ending infinitive. Generally......for infinitives ending in ER, the past participle is é.... for infinitives ending in RE, the past participle is u.... for infinitives ending in IR, the past participle is i.Of course there are exceptions to the rule, but these will have to be learnt separately. Here is an example sentence of a verb conjugated in the pluperfect tense: J'avais habité en Angleterre avant de venir en France.