YOU SAID:

My backbone started to hurt when i lift the heavy boxes

INTO JAPANESE

重い箱を持ち上げると背骨が痛くなり始めた

BACK INTO ENGLISH

My spine started to hurt when I lifted heavy boxes.

INTO JAPANESE

重い箱を持ち上げると背骨が痛くなりました。

BACK INTO ENGLISH

My spine hurt from lifting heavy boxes.

INTO JAPANESE

重い箱を持ち上げて背骨が痛む。

BACK INTO ENGLISH

My spine hurts from lifting heavy boxes.

INTO JAPANESE

重い箱を持ち上げて背骨が痛い.

BACK INTO ENGLISH

My spine hurts from lifting a heavy box.

INTO JAPANESE

重い箱を持ち上げて背骨が痛い.

BACK INTO ENGLISH

My spine hurts from lifting a heavy box.