I don't know what he needs is calmness和I don't know what he needs分别是什么意思?都是宾语从句吗?

I don't know what he needs is calmness和I don't know what he needs分别是什么意思?都是宾语从句吗?
I don't know what he needs is calmness
和I don't know what he needs分别是什么意思?都是宾语从句吗?

I don't know what he needs is calmness和I don't know what he needs分别是什么意思?都是宾语从句吗?
第一句完整句子为I don't know (that) what he needs is calmness.意思是“我不知道他需要的是冷静.”
后一句意思是“我不知道他需要什么.”
第一句是一个复合从句,有宾语从句和主语从句,I don'k know (that)+.that后面为宾语,而what he needs 是后面这个宾语句子的主语,也就是说这个宾语从句的宾语是一个主语从句.
第二句就是一个简单的宾语从句.

needs需要（名词性）
不知道他需要的是冷静
是确实是宾从

我不知道他所要的是平静,what he needs是主语从句

首先我想说:那个秀才级别的错了.
what he needs is calmness.是宾语从句.
意思是:我不知道他需要的是平静.
在what he needs is calmness.中,what he needs是主语从句.