for the first time句中的for属于它的什么用法

for the first time句中的for属于它的什么用法 for the first time 用法. for the first time 和 the first time 有什么用法区别? the first time,for the first time,by the first time用法区别 for the first time,the first time有什么区别 for the first time. first的用法：1》 I went to the tropics for the first time last ye the first time ,for the first time 的区别 For the first time和The first time的区别 for the first time,the first time的区别 for the first time做什么成分 the first,for the first time,first time,by the first time的区别