YOU SAID:

The boy was late to catch the bus

INTO JAPANESE

少年はバスに乗るのが遅れた

BACK INTO ENGLISH

The boy was late on the bus

INTO JAPANESE

少年はバスに遅れた

BACK INTO ENGLISH

The boy was late for the bus

INTO JAPANESE

少年はバスに遅れた

BACK INTO ENGLISH

The boy was late for the bus