this has not been easy与this is not easy区别感觉第一种怪怪的···不简单就不简单,为什么要用完成时呢?
问题描述:
this has not been easy与this is not easy区别
感觉第一种怪怪的···不简单就不简单,为什么要用完成时呢?
答
this has not been easy与this is not easy区别
感觉第一种怪怪的···不简单就不简单,为什么要用完成时呢?