did peter come here yesterday?li lei wants to know.改为复合句
问题描述：
did peter come here yesterday?li lei wants to know.改为复合句
答
变复合句：Li Lei wants to know whether\if Peter came here yesterday.
李雷想知道昨天彼得是否来这里了.
宾语从句部分要改成陈述语序,把助动词did去掉,come还原为过去式.