Japanese · Pronunciation Guide
o-ne-ga-i-shi-ma-su, seven equal beats. The "ga-i" is two separate beats, not the diphthong of English "guy."
onegaishimasu
Seven morae marching in step. There's no long vowel and no geminate here, which makes it a good word for practising pure evenness: seven taps, seven sounds, no acceleration through the middle. Pitch-wise the phrase rises off the low first mora and stays up until the very end, so you should not hear any dramatic peak.
Listen: お願いします
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コーヒーを一つお願いします。
Koohii o hitotsu onegaishimasu.
One coffee, please.
Listen: コーヒーを一つお願いします。
Free browser voice. Hear it read by a real native speaker inside the LingoDrop app.
コーヒーを一つお願いします is a length workout: コーヒー has two long vowels in a row (koo-hii, four morae for what English reads as two syllables), and 一つ has a small っ giving a silent beat before its t. Then お願いします arrives with none of that — seven plain beats. Contrasting the three words in one sentence is the fastest way to feel what mora timing actually means.
The wrong version sounds like "o-ne-GUY-shi-mass" — ga and i crushed into the English diphthong of "guy," which costs the phrase a whole beat. Japanese has no diphthongs in the English sense; adjacent vowels are simply consecutive full beats. Say "ga" and then "i" with a hair of separation until the seven-count feels automatic, then let it smooth out.