I realized at once that I had done it wrong when she told me all about This ,其中那是主句 那是状语 那是宾语从句

主句：I realized .
宾语从句：that I had done it wrong
状语：when she told me all about Thisat once that 是做什么的从句是什么语序at once 作状语，that引导宾语从句。 I had done it wrong 是个完成时的陈述句，这一句中，主语i,谓语 had done ,宾语 it ,wrong是宾语补足语。at once 是主句的状语吗？at once 是主句的状语吗？是的。