“there has been”是一个由“there is”和“has been”组成的时态结构,用于描述过去存在或发生的情况,其用法如下:
关键词:“there has been”的用法
1. 过去存在或发生
“there has been”可以用来表示过去某段时间内一直存在或发生的情况,例如:
There has been a lot of rain this summer. (这个夏天雨水很多。) There have been many accidents on this road. (这条路上发生过很多事故。)
2. 过去完成了现在
“there has been”还可以用于表示过去完成并持续到现在的动作或状态,例如:
There has been a change in the weather. (天气发生了变化。) There has been a rise in unemployment. (失业率上升了。)
3. 表示惊讶或强调
在某些情况下,“there has been”可以用来表示惊讶或强调,例如:
There has been a surge in COVID-19 cases. (COVID-19 病例激增。) There has been an outpouring of support for the victims. (人们对受害者表示了极大的支持。)
4. 否定形式
“there has been”的否定形式为“there has not been”,用于表示过去不存在或未发生的情况,例如:
There has not been any significant improvement in the economy. (经济没有显着改善。) There have not been any complaints about the product. (没有关于该产品的投诉。)
5. 变格
“there has been”的变格与其他时态结构类似:
现在时: There is/are 过去时: There was/were 将来时: There will be 过去将来时: There would be
示例:
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