Her arm hurt .检查错误

Her arm hurt .检查错误
Her arm hurt .检查错误

Her arm hurt .检查错误
她胳膊受伤了 Her arm was hurt.
她胳膊疼 Her arm hurts.其实过去式Her arm hurt.也没错!

arm 有单复数之分，要符合主谓一致原则

She hurt her arm. 是她的手臂受伤了。
Her arm hurt. 是她的手臂疼

hurts