These sentences were read aloud by real people — native Japanese speakers — for the open Mozilla Common Voice project. Listen to how a phrase sounds in real speech: the intonation, the pace, the way words run together. Two speakers mean two different people read it — compare them.
歯のないおじさんに麻雀を教えてもらった。
はのないおじさんにまーじゃんをおしえてもらった。A toothless old man taught me to play mahjong.
麻雀の役を全部覚えたかい？
まーじゃんのやくをぜんぶおぼえたかい？Have you learned all the mahjong hands?