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二郎系ラーメンで「ニンニク入れますか?」って言われたから…
→ “I was asked at a Nihonryū-style ramen place, 'Do you want garlic?' so...”
二郎系 jirō¹kei = Nihonryū-style (adj.)
ラーメン rā¹men = ramen (n.)
で de = at / in (location particle)
「 = [opening quote mark]
ニンニク ninniku = garlic (n.)
入れますか iremasu ka = will put in? (polite question form of 'to put in')
入れ ire = put in
ます masu = politeness marker
か ka = question marker
」 = [closing quote mark]
って tte = 'said' / colloquial quote particle
言われた iwareta = was told (passive form of 'to tell')
言 i = say / speak
わ wa = (causative/passive indicator)
れた reta = past tense / passive suffix
から kara = because / since (conjunction)
… = [ellipsis indicating trailing thought]