Other than the capitalisation of 'i', the only mistake I can see in your sentence is that 'policeman' should be one word. This sentence is fine: It was reported that a policeman was badly injured in the explosion. If you're studying reported speech, you could put the verb into the past perfect, although this is not strictly necessary: It was reported that a policeman had been badly injured in the explosion. You said 'My teacher said that the error was the "injured" and [re]placed it with "wounded" because "injured"[is] used to describe an injury in [an] accident". Sorry, but that's nonsense. 'Wound' is more specific that 'injury'. We don't know what the nature of the injuries are, so 'injured' sounds better better than 'wounded' in this case. Your teacher just invented that answer so as not to lose face in front of the class.

My dictionary, the New Oxford American Dictionary, gives the example "the explosion injured several people." For most Americans, injury is the generic and common word and wound is a more specific word involving a knife or a gun. For a vocabulary test, the words have different meanings. New Oxford American Dictionary injure verb [with object] do physical harm or damage to (someone): the explosion injured several people. suffer physical harm or damage to (a part of one's body): he injured his back. injured adjective harmed, damaged, or impaired: a road accident left him severely injured. wound noun an injury to living tissue caused by a cut, blow, or other impact, typically one in which the skin is cut or broken: a knife wound | chest wounds | a wound to the thigh.

Hello! I agree with Charlie! "injured" is a broad term used for any kind of result of being hurt (in an accident, in a fight, in an explosion, etc.). "wounded" means there is physical evidence of broken skin etc. - there is blood showing. This means that a wound is an injury but an injury might not necessarily be a wound. I hope that helps!

"Injured" is not an error. It is fine. (think: bruise pain, maybe broken bone}. It just sounds less serious than "wounded" which is more commonly used in a conflict situation and often includes broken skin/ blood. (Think: gunshot/ cut). The only error I see is "policeman" which is one word. "Badly injured" is pretty much the same as "wounded".

Wounded is a better word describing the nature of the injuries but injured is still acceptable here. If you are practicing for IELTS it's best to use more descriptive words as your teacher highlighted. Another mistake is that policeman is together, if you want to separate it you should write police officer. Hope that helps Nhi :)