rang的动词原形是ring，该词是ring的过去式。
（1）bell钟，铃
①to make a belt make a sound especially to call someone'；s attention to you or to call someone to help you使钟或铃鸣响，敲钟，按铃
例如：I rang the doorbell but no one came.
我按的门铃，但没有人来。
②if a bell rings， it makes a noise钟，铃鸣响
例如：The bell rang for the end of break.
铃声响了，休息时间结束。
（2）telephone电话
①to make a telephone call to someone打电话，给某人打电话
例如：I was going to ring you but I don'；t have your number.
我想给你打电话，但没有你的电话号码。
②if a telephone rings， it makes a sound to show that someone is telephoning you电话铃鸣响
例如：The phone hasn'；t stopped ringing all day.
电话铃整天响个不停。
