Have you bought a new bag 和Did you buy a new bag有什么区别

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Have you bought a new bag 和Did you buy a new bag有什么区别
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Have you bought a new bag 和Did you buy a new bag有什么区别
Have you bought a new bag 和Did you buy a new bag有什么区别

Have you bought a new bag 和Did you buy a new bag有什么区别
第一个句子是指有没有做这件事,是一个完成时态,没说明是不是以前发生的;第二个句子是一般过去时,表明一定是过去发生的.