Where people go and went: simple present and preterite

Many English adverbs ending in -ly become -mente in Spanish, e.g. 'especial' - 'especialmente'. If an adjective has -o/-a forms, use the -a form + -mente to make the adverb, e.g. 'lento' - 'lenta' - 'lentamente'. Words ending in -n or -s generally stress the penultimate syllable and do not need an accent, e.g. 'examen'. Adding the plural ending -es shifts stress to the antepenultimate syllable, so an accent is needed, e.g. 'exámenes'. 'Voy', 'vas', 'va' are the simple present forms of the verb 'ir', and 'fui', 'fuiste', 'fue' are the preterite forms.