Die Wuppertaler Schwebebahn: past tense, past participles, time-manner-place

German uses the perfect tense to describe most past events, but English uses simple past for specific, completed events. Form the perfect tense with a present tense of 'haben' or 'sein', plus a past participle at the end of the sentence. Weak verbs form past participles by sandwiching the verb stem with 'ge-' and '-t'. '-ieren' verbs don't add 'ge-'. Strong verbs form past participles with 'ge-' and '-en'. Separable prefixes go before 'ge-'. The order of adverbs in a sentence is time ('um 6 Uhr'), manner ('mit Freunden'), place ('im Haus').