各位老师好，句子如下：
Little did he know, Apple would eventually balloon to become the world’s most valuable company, the first to reach a covet.
我想了解Little did he know的成分。里是个插入语么？还是接在后面“Little did he know that Apple…………”
谢谢老师。
Little did he know, Apple would eventually balloon to become the world’s most valuable company, the first to reach a covet.
网友的理解是正确的，Little did he know是插入语分句，其后为主句。
假如改为Little did he know that...则little did he know为主句，that引导宾语从句。二个句子有什么区别是，主句表示主要信心，从句表示次要信息。
假如说话人想突出Apple would...分句的内容，就将Little did he know用作插入语，Apple would分句为主句。
假如说话人想突出He knew little，则用其做主句，Apple分句作宾语从句。
二个句子的意思相同，只不过信息的侧重点不同。