Accidents and emergencies: -er verbs in the perfect tense with 'être'

[s] is pronounced as in 'maison'. A double 's' between vowels is always soft but a single 's' between vowels is always a hard 's' [s] and sounds like 'z'. Movement verbs such as 'entrer', 'tomber' and 'monter' use 'être' in the perfect tense before the past participle. Past participles used with être must agree in gender + number with the subject of the verb. Add 's' for plural subjects. How (often) adverbs usually go after the first verb but longer -ment adverbs usually go at the end or even the start.