The price of vegetables has been doubled because of the weather.由于天气不好,蔬菜价格翻了一翻.
问题描述：
The price of vegetables has been doubled because of the weather.由于天气不好,蔬菜价格翻了一翻.
请问 ,这里 has been 有什么用.
答
has been doubled是现在完成时的被动语态