conjugation rules and endings for the first group verbs.
S'écrouler is conjugated the same way that verbs that end in :
-er. First group verbs always end with
-er as their infinitive. Endings of first group verbs are regular.
Note : Although endings are perfectly regular, spelling changes occur in the stems of verbs in
-cer,
-ger,
-yer,
-eter,
-eler,
-é-consonne(s)-er,
-e-consonne-er, verb
envoyer and similar verbs.
The verb
s'écrouler is a reflexive verb which is always reflexive. So it is always conjugated with a reflexive pronoun. Here is the list of the french reflexive pronouns:
« me »,
« te »,
« se »,
« nous »,
« vous »,
« se ».
S'écrouler is conjugated in interro-negative form. The interro-negative form being obtained by inversion of the subject, the placement of the negative adverb follow the same rules as in negative form, giving the following rules:
- in interro-negative form, the adverb
« ne » is always placed first if the subject is a pronoun.
- in simple tenses, the adverbs (
« ne ...pas »,
« ne...plus »,
« ne...jamais », etc...) surround the verb
s'écrouler and the inverted subject pronoun.
- in compound tenses or in ive voice, the negative adverbs surround the auxiliary and the inverted subject pronoun.
- With a reflexive verb, in simple tenses, the negative adverbs surround the reflexive pronoun, the verb, and the inverted subject pronoun.
- With a reflexive verb, in compound tenses, the negative adverbs surround the reflexive pronoun, the auxiliary, and the inverted subject pronoun.
For sound reasons, like in interrogative form, an euphonious
« t » is added to the pronoun of the third person:
« il »,
« elle »,
« on »,
« ils »,
« elles » except when the verb ends with
« t » or
« d »:
« ne s'écroule-t-elle pas ">« ne se sera-t-elle pas écroulée ? ».
Always in interro-negative form, and always for sound reasons, an accent appears in first person present indicative tense when the verb ends with
« e ». An euphonious
« e » is replaced by
« é »:
« ne m'écroulé-je pas ? ».
Finally, the interrogative form does not exist in subjunctive and imperative.