Kids Web Japan

(1) "SUMIMASEN" - "I'm sorry."
(2) "SUMIMASEN" - "Excuse me."
(3) "SUMIMASEN" - "Thank you."

(1) "SUMIMASEN" can be used to apologize, like "GOMENNASAI"="I'm sorry."

Example 1:
(Person steps on another person's foot while on the train.)

"Sumimasen." = I'm sorry.
"Iie" = Not at all.