reason在从句里,有时后面跟的that,有时跟的why,到底reason要做什么成分的时候,在什么从句里,后才有th

reason在从句里,有时后面跟的that,有时跟的why,到底reason要做什么成分的时候,在什么从句里,后才有that

非常简单.如果你会合并下列句子,你就懂了.
1 Tell me the reason.You did not come for that reason.(这两个reason是同一个概念,for的意思是“由於,因为”)
2 The reason doesn't sound true.She has given the reason for her absence.（give是谓语,the reason是宾语）
这里是答案：
1 Tell me the reason for which you did not come.
== Tell me the reason why you did not come.
2 The reason (that / which ) she has given for her absence.doesn't sound true.