在英语现在完成式中 i have lived here since my childhood.i have been in this school since 2000.在英语现在完成式中 i have lived here since my childhood.i have been in this school since 2000.在这两句中为什么为什么有一句

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在英语现在完成式中 i have lived here since my childhood.i have been in this school since 2000.在英语现在完成式中 i have lived here since my childhood.i have been in this school since 2000.在这两句中为什么为什么有一句
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在英语现在完成式中 i have lived here since my childhood.i have been in this school since 2000.在英语现在完成式中 i have lived here since my childhood.i have been in this school since 2000.在这两句中为什么为什么有一句
在英语现在完成式中 i have lived here since my childhood.i have been in this school since 2000.
在英语现在完成式中 i have lived here since my childhood.i have been in this school since 2000.在这两句中为什么为什么有一句要加been?

在英语现在完成式中 i have lived here since my childhood.i have been in this school since 2000.在英语现在完成式中 i have lived here since my childhood.i have been in this school since 2000.在这两句中为什么为什么有一句
因为介词短语in the school不能单独存在,不能直接跟在have 后面,必须加上be动词,be的过去分词为been

因为完成时是sb. have/has done
就是说 live 和been 是那个done
把动词套进去就可以了哦、
呵呵