Falloir is a french third group verb. So, this verb is irregular and do not follow a regular conjugation pattern like first or second group verbs. Follow this link to see all the endings of the conjugation of most of the third group verbs :
conjugation rules and endings for the second group verbs.
Le verbe
« falloir » is an impersonal verb. In linguistics, an impersonal verb is one that has no determinate subject. For example, in the sentence "It rains", rain is an impersonal verb and the pronoun it does not refer to anything. In many languages the verb takes a third person singular inflection and often appears with an expletive subject. In the active voice, impersonal verbs can be used to express operation of nature, mental distress, and acts with no reference to the do-er. Impersonal verbs are also called weather verbs because they frequently appear in the context of weather description. Common french impersonal verbs:
pleuvoir =>
« il pleut »,
grêler =>
« il grêle »,
falloir =>
« il faut »,
s'agir =>
« il s'agit »,
advenir =>
« il advient ».
Falloir verb is conjugated in negative form. The placement of the negative adverb follow the following rules:
- the adverb
« ne » is placed after the pronoun and before the verb.
- in simple tenses, the adverbs (
« ne ...pas »,
« ne...plus »,
« ne...jamais », etc...) surround the verb
falloir.
- in compound tenses or in passive voice, the negative adverbs surround the auxiliary.