one与that做代词的区别

题目

one与that做代词的区别
我们老师今天讲,one 与it和that做代词的区别
有一个例句
the weather in Shanghai is hotter than that in Beijing.
老师说,that 指上文提到过的事情,我看语法说上也这么说,但是one也可以指同类事物中的不同物呀
上边那个例句可以换成
the weather in Shanghai is hotter than the one in Beijing.吗?
或者是the weather in Shanghai is hotter than one in Beijing.
我感觉有点别扭所以来问问

答案

one 指代单数名词,而上句中weather（天气）是不可数名词,所以不能用one代替that.
that 指代不可数名词或者指代上文中提到的情况.that指代的是“同名异物”.
it 指代单数名词或者不可数名词,指代“同名同物”.
祝你学习进步,更上一层楼!(*^__^*)