改错:How long have you bought this coat you are wearing?

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改错:How long have you bought this coat you are wearing?
改错:How long have you bought this coat you are wearing?

改错:How long have you bought this coat you are wearing?
改为:How long have you been bought this coat you are wearing?
因为”买”是短暂性动词,如果要用完成时就一定要有延续性的动做的词.一般如果短暂性的动词用完成时的话就要加”BEEN”.

把bought改为had,buy是瞬间动词,不能用於完成式来表一段时间的动作!!

bought改为had

For how long have you bought this coat you are wearing?

How long have you bought this coat which you are wearing?

将bought改为get
buy是瞬间动词,不存在一件衣服买很长时间

改错:How long have you bought this coat you are wearing?
bought错了!因为How long要用延续性动词(可持续一端时间,如读书等),所以把bought改为它的延续性动词形式have,own又因为这里是现在完成时态,要用had,owned!