happen to do的相关用法问题

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/17 05:38:26

happen to do的相关用法问题
she happened to have heard the news她碰巧听到了这个消息和 she happened to hear the news 有什么区别

She happened to have heard the news她碰巧【已经】听到了这个消息.
她碰巧【先前】听到过这个消息,当【happened这个时间】,就派上用处了.
She happened to hear the news.她碰巧听到了这个消息.
只是表明【那时碰巧她听到了这个消息】.

happen to 的用法 happen 有 sth happen to sb或者sb happen to do sth 那么occur同样的用法吗 happen to do sth happen的各种形式及用法与其有关的常用短语 happen to do和happen to be doing 的区别? happen to do sth的汉语是什么? happen to do sth 问个关于happen的用法的问题. happen 的用法求happen的用法! happen的用法关于happen的用法 happen的用法.