新东方在线中考网整理了《2019中考英语复习资料：连接副词when, where, 引导的主语从句》，供同学们参考。

　　连接副词when, where, why, how引导的主语从句。这些连接副词相当于副词，在从句中充当状语。

　　Why he did this is not known.

　　When he will come is still unknown.

　　It is not known why he did this.

　　How he succeeded is unknown to us.

　　Where we should hold the meeting needs to be discussed.

　　注意：wh-引导的主语从句也常用it作形式主语。

　　相关链接

　　2018中考试题及答案汇总

　　2018中考作文题目汇总(31省市汇总)