Japanese phrase
忘れ物をしました。 wasu re mono o shi ma shi ta
Meaning
I left something behind.
When to use it
States that something was accidentally left behind. It is a polite, neutral way to report a lost item in places such as hotels, trains, and shops.
Example dialogue
すみません、忘れ物をしました。 su mi ma se n wasu re mono o shi ma shi ta
Excuse me, I left something behind.
何をお忘れですか？ nan o o wasu re de su ka
What did you leave behind?