showed:v. 顯示錶現展示（show的過去式）
He showed courage in adversity.
他在逆境中顯示出了勇氣。
shown:v. 解釋（show的過去分詞）給予表露
What have their researches shown?
他們的研究證明了什麼
What have their researches shown?
他們的研究證明了什麼
You have shown great strength of character.
你表現得很有毅力。
He has shown himself to be a caring father.
他向人們證明自己是個有愛心的父親。
She had shown herself unable to deal with money.
她所做的事已表明她不善理財。
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