I had never seen it before为什么要用过去完成时啊

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Ihadneverseenitbefore为什么要用过去完成时啊Ihadneverseenitbefore为什么要用过去完成时啊Ihadneverseenitbefore为什么要用过去完成时啊因为是b

I had never seen it before为什么要用过去完成时啊
I had never seen it before
为什么要用过去完成时啊

I had never seen it before为什么要用过去完成时啊
因为是before
我以前从来没有看过它
说明现在看到了
就不能延续到现在
所以用过去完成时

强调结果..而且口语中也经常这么说..

只是一个单独的句子吗？应该是根据短文的语境确定的

强调说这句话之前从来没看过，只是强调。

从现在以前说ago，从过去某时间以前说before，所以ago是和past tense（过去时）同用的，before是和Past Perfect（过去完成时）同用的。since做副词用，也意为以前，二者时态都可以。例如;
A centure ago people did not know airplane.
i came back yesterday,but he had came...

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从现在以前说ago，从过去某时间以前说before，所以ago是和past tense（过去时）同用的，before是和Past Perfect（过去完成时）同用的。since做副词用，也意为以前，二者时态都可以。例如;
A centure ago people did not know airplane.
i came back yesterday,but he had came back two days before.
The tree cast their leaves a month since.
He said his father hag died two years since.

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I had ever seen it before.和[I had never seen it before.]有什么区别? 翻译：It's a waste of time and I wish I had never seen it i had never had it i would never believe it if i had not seen her with my own eyes英语翻译 I had never seen it before为什么要用过去完成时啊 never ()a man as happy as he i had seen had i seen i have see It was strange how close I felt to someone I had never seen before.这句话怎么翻译好 I have never had the opportunity seen myselrf 求这篇完形填空 I __ such a good boss before I came to this company.A.had never saw B.have never seen C.had never seen D.have never saw I never really had it coming I never really had it coming是什么意思 翻译句子 i've never seen the like of it 高一句型转换,1I had never seen the night face to face .转换成It was __ __ __that I had seen the night face to face. I have never seen it和 I never saw it 的区别. it was years before i had seen her 和it wasyears since i had seen her是相等吗 I had never see it before我之前从来没有看到它请帮忙看一下句子和翻译有没有错是不是see要换成seen it is the ugliest face that i have ever seen（that i had never seen）有区别么 这两个可以译为“这是我见过最丑的脸”么?如果可以那表达方式上有设么区别 I HAVE NEVER SEEN 歌词