20 yuan on this spent 20 yuan buying this book cost him 20 took hime 20 yuan to buy this book.祝你学习进步，更上一层楼！ (*^__^*)不明白的再问哟，请及时采纳，多谢！
She has had this magazine for two has been two years since she bought this was two years ago that she bought this bought this magazine two years .
4.他借这本杂志一周了。He has borrowed this magazine for a 。他到美国一年了。He has been in the United States for a .他离开家一个月了吗？Has he been away from home for a month?7.
for ten years 值得说的一点是 不能用buy的过去式代表“买”因为buy不能接代表一段时间的短语 它不是持续性动词 不然就有你买书的“买”这个动作持续了十年~~十年的时间一直花在“买”这个动作~~
过期杂志：outdated magazines
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小石在青岛
