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it's been是什么时态,

来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/26 03:46:37
it's been是什么时态,
现在完成时,已经怎么样.
It's been two years since I met you last .
自从我上次见你已经两年了.
it's been是什么时态, it's +一段时间+since 是什么时态 have been是什么时态? have+been是什么时态 Having been 是什么时态 have been working 是什么时态 have been doing是什么时态? had been doing是什么时态 i've been ...是什么时态? have been to是什么时态? had been doing 是什么时态? having been done是什么时态?