And so,my fellow Americans:ask not what your country can do for

And so,my fellow Americans:ask not what your country can do for you --ask what you can do for your country.(from Inaugural speech by John F.Kennedy)
【正确答案】：同胞们：不要问你的国家能为你做什么，要自问你能为你的国家做什么贡献。【解析】原句是祈使句，ask的宾语是what引导的宾语从句。汉译时将否定词not提前以适应汉语的表达习惯；最后一个what增译为“什么贡献”。