there ...great changes in my hometown in the last ten years

来源：学生作业帮编辑：搜搜做题作业网作业帮分类：英语作业时间：2024/05/15 14:48:24

there ...great changes in my hometown in the last ten years
为什么用have been

There have been great changes in my hometown in the last ten years.
解析：in the last ten years 为表示一段时间的时间状语
所以句子要用现在完成时
再问：为什么不用has been
再答： changes 为可数名词复数形式谓语动词要与之保持一致

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