青年中文had never been done的意思
had never been done中文翻譯：
從未做過
had been done───過去完成時的被動語態
had never been───從來沒有……（been是be的過去分詞）
had been───已經（過去完成時）
never been───從來沒有
never had───從來沒有
had been sold───已經被賣掉了
had been on───一直在
he had done───他已經做到了
i had never───我不曾；我從來沒有；我以前從未
To my knowledge, a light writing of this size had never been done before.───據我所知，這種規模的輕型書面從未這樣做過。
It had never been done before, and it was an obvious thing to do, ” he said.───這種方法在過去從沒做過，但這并不難實現，”他說道。
So we created this on-site service program for servicing PCs, which had never been done before.───所以在PC 服務方面，我們開啟了現場服務項目，這是史無前例的。
Jordan's demand to have the stripe removed -- which would require restarting production halfway through -- had never been done at Nike.───喬丹的要求把帶子去掉——也就是要求重啟生產——這在耐克公司前所未有。
Amelia Earhart has inspired generations of women to do things that had never been done by women before.───愛蜜莉亞埃爾哈特啟發了世世代代的女性，讓她們勇于嘗試過去的女人從未做過的事。
It had never been done before because it was physically impossible!───之前從沒人這么表演過因為生理上來講是不可能的！
A good feasibility study would have proved that the policy was totally wrong, but that had never been done.───一個好的可行性調查本來可以證明那個政策是完全錯誤的，但從來沒做過可行性調查。
They rowed across the Atlantic, which had never been done before.───他們劃船橫渡大西洋，這是史無前例的創舉。
"It had never been done before, and it was an obvious thing to do, " he said.───“這種方法在過去從沒做過，但這并不難實現，”他說道。
Or just Richie. As far as I knew that had never been done.
This had never been done before with a rocket engine.