Question

after five hours'drive,they reached( )they thou

after five hours'drive,they reached( )they thought was the place they'd been dreaming of答案是what，求解释

Answer 1

这里的what引导的宾语从句，做reach的宾语，其中what在宾语从句中做 thought的宾语。

追问

答案说they thought是插入语

that which和where为什么不行

追答

that 和which引导的是定语从句，这里缺少的是宾语，不是定语
where做地点状语成分，而这里的thought缺少宾语，不是状语