This dinning chair is different from that one

This dinning chair is different from that one

题目
This dinning chair is different from that one
这句话中为什么用that one 只用that行不行This dinning chair is different from that.
答案
that所指范围太广了,后面的one代指前面所提到的dinning chair,就是专指this dinning chair.
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