I realized her the moment I saw her.the前面为什么不能加at

题目

I realized her the moment I saw her.the前面为什么不能加at

答案

I realized her the moment I saw her.
the moment相当于when,它连接I realized her和I saw her两个完整的句子,at the moment是此刻目前的意思,如果加上翻译起来就不通,而且它不具备连接的功能.