She have bought the computer since three years ago

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She have bought the computer since three years ago
She have bought the computer since three years ago

She have bought the computer since three years ago
你好,这是一个错误的句子,简单讲一下
since three years ago 表示从三年前到现在,是一个持续的时间,一个过程
但是buy买是一个短暂性的动词,你想,“买”在买的那一瞬间动作就完成了
怎么能说从三年前到现在一直在买呢?
因此,需要把buy改成一个延续的动词,你买了它,等于你拥有了它
那么就是have,因为是现在完成时前面的have还要改成has
She has had the computer since three years ago

祝你学习进步

错。
应该是 she has had the computer for three years
或者 she bought the computer three years ago

不对，这句话如果是强调三年前发生的动作，应该这么说：
She bought the computer three years ago.
如果要强调三年之久，则应如下说：
She have bought the computer for three years.

1. 时态不对。
改成：She bought the computer three years ago.（没有since，说的是过去的事）
2. buy是个终止性动词，不能与since three years ago（自从三年前以来）一段时间状语连用，应把have bought改成have had
改成：She has had the computer since thre...

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1. 时态不对。
改成：She bought the computer three years ago.（没有since，说的是过去的事）
2. buy是个终止性动词，不能与since three years ago（自从三年前以来）一段时间状语连用，应把have bought改成have had
改成：She has had the computer since three years ago.
3.主谓不一致
She have是不对的

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