showed与shown的区别
showed: v. 显示；表现；展示（show的过去式） He showed courage in adversity. 他在逆境中显示出了勇气。 shown: v. 解释（show的过去分词）；给予；表露 What have their researches shown? 他们的研究证明了什么？ What have their researches shown? 他们的研究证明了什么？ You have shown great strength of character. 你表现得很有毅力...