I want to buy the same pen that you bought yesterday.可以把that换成which或者省略吗？I want to buy the same pen (which\that) you bought yesterday.可不可以换which 这里的先行词不被不定代词修饰吧？

Question

I want to buy the same pen that you bought yesterday.
可以把that换成which或者省略吗？I want to buy the same pen (which\that) you bought yesterday.
可不可以换which
这里的先行词不被不定代词修饰吧？

Answer 1

同意 acoada的答案,
不好意思,
但不能换的原因不是因为the same是不定代词,而是:
有2种情况不能换:
1.先行词是:all ,any ,nothing...不定代词或被它们修饰时
2.先行词被adj.最高级或序数词或the very ,the only,the same修饰
所以,这是属于第2种,昨天看漏了,sorry