fight的過去式和過去分詞是什么啊?

　　例句

　　1.Mother Teresa is an elderly nun who has devoted her life to fighting poverty.

　　德肋撒嬤嬤是一位畢生致力于消除貧困事業的年邁修女。

　　2.Our Government should be fighting for an end to food subsidies.

　　我們政府應該努力廢止食物補貼。

　　3.The two men fought a battle over land and water rights.

　　這兩個男人為土地和水的使用權發生了爭斗。

　　4.He fought in the war and was taken prisoner by the Americans.

　　他參了戰，后被美國人俘虜。

　　5.As a child she fought with her younger sister.

　　她小時候會和妹妹打架。