人教版高考英语《It 重点用法归纳》
It 重点用法归纳
   横林中学高三英语组 徐晓霞
替代词one, ones, that, those, it,this, that?
1)one, ones, that, those
That替换单数可数名词或不可数名词；one只替换单数的可数名词。
Eg: The vase on the left is more beautiful than  __________  on the right.
The coffee produced in Brazil is more famous than __________in Mexico.
?
the one
that
That只用于替换表示事物的名词， 而one/ones替换表示人和表示事物的名词皆可。
Eg: His younger sister is taller than the elder ___.
I need the plastic bags, not the paper______ .

one
ones
That/ those一般不带前置定语，但必须有后置定语。One/ones都可。当替换词的后置定语用所有格的of短语或当替换词被所有格修饰时，不用one/ones而用that of/those of.
?
Eg: I like the vase better than ________________in another shop.

The windows of your flat are cleaner than _________of mine.
 A grandparent’s job is easier than ________of a parent.

The computers in our school are connected to the Internet while __________  in their school aren’t.

the one / that
those
that
those
That/ those用于替换有定冠词的名词；one/ones用于替换有不定冠词的名词。

Eg: The style of the building is similar to _________of a temple.
A CD player made in Japan costs more than ________made in China.

that
one
2) it, this和 that
都可以替代前文已提到的事或情况，细微差别在于it不如其余两者那么强调。
Eg: So she decided to paint the door pink. ______upset the neighbours a bit.
So she decided to paint the house pink. _____really upset the neighbours.

It
That
当前面提到的事物不止一件时， it通常指最先提到的事物，而this/that是指最后提到的事物。

Eg: We keep the ice cream machine in the spare room. ________is mainly used by the children.   (指 the machine)
    We keep the ice cream machine in the spare room. ____________is mainly used by the children. (指the spare room)
It
This/That
This可以出现在它所指代的事物之前；而that则指上文所提到的事物。