.happen这个瞬间动词有完成时吗?It seems that no one knew what had happened.
问题描述：
.happen这个瞬间动词有完成时吗?It seems that no one knew what had happened.
在朗文字典和高考必备上都没有见过happen的完成时,上面的句子是网上的语法讲解出现的,请行家给解释下究竟可不可以以有完成时?
答
当然有完成. I don't know what has happened.
瞬间动词只是不能与时间段连用.这句话的出处是哪里？还要出处吗？没见过说不能用完成时的