Your sentence
Il+va+pleuvoir.
Words in this sentence
il
he (third-person singular masculine subject pronoun for human subject); it (third-person singular subject pronoun for grammatically masculine objects); Impersonal subject; it
Pronoun
aller
to go; to attend (school, church regularly); to be going (to); will soon; forms a near-future tense; to be (feeling); to go well; to suit; to be X-proof (to be suitable for use in an appliance without running the risk of being damaged in the process)
Verb