This has not been easy because i own over a thousand books.这

This has not been easy because i own over a thousand books.这句话中been是什么用法

yiyibh777 1年前已收到4个回答举报

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amao0517 幼苗

共回答了12个问题采纳率：100% 举报

e的过去分词,this is not easy是一般现在时态句式.

1年前

1

沉默乎幼苗

共回答了45个问题举报

完成时动词变为过去分词。

1年前

2

yll403 幼苗

共回答了62个问题举报

现在完成时，因为been前有has

1年前

2

G心醉X男孩H 幼苗

共回答了1个问题举报

过去分词吧、

1年前

1

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