這是一個固定句型,since did,have done 從句意上來理解,是從過去一直到現(xiàn)在,符合完成時.
就是從他們40年前結婚開始這對老夫妻之間從來沒有吵過架.
never once has the old couple quarreled with each other since they were married 40 years ago.
never once has the old couple quarreled with each other since they were married 40 years ago.
這個句子怎么理解,為什么用完成時態(tài),
這個句子怎么理解,為什么用完成時態(tài),
英語人氣：697 ℃時間：2019-08-17 00:35:38
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