同类不同物用one还是it

Question

it,one的区别 一个是代替同一个物,另一个代替同类不同个的一个物. 问哪个是一个,哪个是另一个,

Answer 1

that
可以指代可数名单数或不可数名词。
his
bike
is
better
than
that
of
mine.
that指代可数名词
单数bike。
the
population
of
our
country
is
larger
than
that
of
their
country.
that
指代不可数名词population.
而
one
只能指代可数名词单数，复数名词用ones，不能指代不可数名词。
this
book
is
better
than
the
one
on
the
desk.
one指代
名词单数
book，并且这里的the
one
可以和
that
通用。