问问题描述
once用于什么时态,求解答求解答,重要的事说两遍!
答精选答案

once作副词意思是:曾经用于过去式。
例如:Once we were good friends.
Once he made up his mind,nothing could not change it.
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本文概览:once作副词意思是:曾经用于过去式。例如:Once we were good friends.Once he made up his mind,nothing could not change it.