“Tomorrow I'll lose the one I love”中的“one”在句子中的用法.什么情况下才这样使用

I'll always love to be the one you love. the one在定语从句中的用法 I'll be the one to marry u,last one to love 动词不定式中的不定式是什么意思呀?在什么情况下的句子才该使用动词不定式呢? Like I’m the only one that you’ll ever love.Like I’m the onl One day you'll love me as I love you.One day you'll think of it's like i'm the one you love to hate like 在句子里是起什么作用的 I lose one day 作文 I'll be the one好听吗? I'll be the one棋魂谁唱的? 翻译:I'll take the blue one. 求棋魂I'll be the one伴奏