Reason后的定语从句that 与why 如何区别呢?1)I don’t know the reason why he said these words.2) I don’t know the reason that he said these words.这两句that 与why 都引导定语从句,如何区别何种情况用why ,that呢?

Reason后的定语从句that 与why 如何区别呢?1)I don’t know the reason why he said these words.2) I don’t know the reason that he said these words.这两句that 与why 都引导定语从句,如何区别何种情况用why ,that呢?
Reason后的定语从句that 与why 如何区别呢?
1)I don’t know the reason why he said these words.
2) I don’t know the reason that he said these words.
这两句that 与why 都引导定语从句,如何区别何种情况用why ,that呢?

Reason后的定语从句that 与why 如何区别呢?1)I don’t know the reason why he said these words.2) I don’t know the reason that he said these words.这两句that 与why 都引导定语从句,如何区别何种情况用why ,that呢?
用why是定语从句,就是why后面跟的句子整个修饰reason.
而that是同位语从句,整个句子对reason起到了补充说明的作用.
好好体会一下,二者的意思是不同的.
第一句是说他说这些话的原因,就是说他为什么要说这些话.
第二句是说他说的这些话就是原因,原因的具体内容就是这些话.

the reason在这两句中都是先行词,但你观察它在第一个从句中做状语此处why 相当于for which在第二句中the reason做的是said的宾语，因此你可由判断the reason在从句所做的成分来使用that 与why！