文档介绍：It, One, That三词之用法区别
1. 它们三词均作代词用,指代前文提到的名词。但是it
所指是同名同物,one和that所指是同名异物,如:
我喜欢那辆汽车,可我没足够的钱买它。
I like the car, but I have no enough money to buy it.
我喜欢汽车,可我买不起一辆。
I like cars, but I can’t afford to buy one
我想买的那辆汽车要比他的那辆漂亮得多。
The car which I want to buy is much more beautiful than that he has.
2. It 可以替名词性从句、动名词和不定式短语,还可
充当形式主语或宾语,而one和that无此用法。如:
我发现按时完成这项工作是不可能的。
I find it impossible plete the project on time.
哪里能找到足够的食物和水还是个问题。
It is a question where we can find enough food and water.
It 可表示天气、时间、距离,以及现场情况知其为何事。
3. It 和that都可以指代上文的一部分或全句,而one不能。
如:杰克和我在美国一起学****了三年,我是不会忘记这事的.
Jack and I studied together in the United States; I’ll never forget it.
如何做得更快更好?那确实是个问题.
How to do it better and faster? That is really a question
4. one 和 that虽然都可以用来指代前文同名异物的名词,
但one指代同类中的一个,属于泛指=a/an+N;而that属于
特指=the+N. 如:
Do you need my pen? No, have got one (=a pen).
The bridge built of steel is stronger than that built of stone.
                                 =the bridge
5. One只能代替可数名词,复数用 ones,而that可数或不
可数均可代,复数用those. 如:
篮子里很多苹果,请把烂的拣出来.
There are a lot of apples in the basket. Please pick out the rotten ones.
我们的规章制度和别的机关的大为不同.
Our rules are quite different from those of anizations.
北京的天气比上海的冷得多.
The weather in Beijing is much colder than that in Shanghai.
6. One 一般有前置或后置的修饰语,或没有; :
This bag is too small. Please give me a bigger one