Question

第一句：do yoi think the reason _which_ he gave is believeable.

第二句：i don not believe the reason why/for which he was late for school.
为什么第一句用which，第二句用Why或for which，the reason 在句中分别作什么成分？请分析它们各自句子成分，谢谢！

Answer 1

第一句：which不仅是引导词，还是 he gave的宾语；do you think the reason是主句 which_ he gave is believeable.是reason的定语从句；
第二句：i 主语 don not believe谓语动词 the reason宾语
其中 why/for which he was late for school.是reason的定语从句

Answer 2

1do yoi think the reason
_which_ he gave is believeable
_which_ 可替换成that或省了 在定语从句中作gave的宾语
3第二句：i don not believe the reason why/for which he was late for school.
why/for which 引导的是同位语从句起连接作用且不可省
1
望采纳，谢谢！

Answer 3

第一句中陈述句是 the reason （that/which）he gave is believeable
do you think为插入语 可见用 which 是关系代词作宾语

Answer 4

第一句中的关系代词作宾语，第二句中的关系词作原因状语。