unfold的過去式和過去分詞怎么變

　　unfold例句分享

　　The love story unfolds against a background of civil war.

　　這愛情故事以內戰為背景展開。

　　She unfolded her tale to us.

　　她向我們傾吐了她的故事。

　　She unfolded her arms.

　　她張開雙臂。