why have you not finished it yet?和why haven't you finished it yet?有什么区别

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whyhaveyounotfinishedityet?和whyhaven''tyoufinishedityet?有什么区别whyhaveyounotfinishedityet?和whyhaven''tyo

why have you not finished it yet?和why haven't you finished it yet?有什么区别
why have you not finished it yet?和why haven't you finished it yet?有什么区别

why have you not finished it yet?和why haven't you finished it yet?有什么区别
其实基本是一个意思.前者比较书面,没有缩写.后者偏口语,有缩写.