one用来替代前面出现的单数名词，是泛指概念，通常替代a/an+单数名词；the one用来替代前面提到的特指的单数名词，后面总是有后置定语，有时可用that替代（尤其是在有后置定语的情况下）；ones 用来替代前面出现的复数名词，也是泛指概念；the ones 用来替代前面的特指的复数名词，有时可用those 替代（尤其在有后置定语的情况下）；that 用来替代前面出现的单数可数名词或不可数名词，只能指物，不能指人，相当于the+单数名词或不可数名词。It指代前面提到的事情或事物，强调同一性。例如：

　　例句：

　　Mr. Wang gave me a very valuable present, one that I had never seen.

　　Mr. Wang gave me many very valuable presents, ones that I had never seen.

　　The book on the desk is better than that/ the one under the desk.

　　The books on the desk is better than those/ the ones under the desk.

　　Few pleasures can equal that of a cool drink on a hot day.

　　Why don’t we take a little break?

　　Didn’t we just have one?

　　Meeting my uncle after all these years was an unforgettable moment, one I will always treasure.

　　The Parkers bought a new house but it will need a lot of work before they can move in.

　　练习：

　　1. Why don’t you bring _________ to his attention that you’re too ill to work on?

　　A. that

　　B. it

　　C. his

　　D. him (2011江西)

　　No bread eaten by man is so sweet as _____ earned by his own labor.

　　A. one

　　B. that

　　C. what

　　D. those

　　2.Even if they are on sale, these mobile phones are equal to ____ in price, if not more expensive than, at other stories.

　　A. anyone

　　B. the ones

　　C. that

　　D. the others

　　3. I would rather buy a house in the suburb than ______ in the city.

　　A. it

　　B. one

　　C. this

　　D. that

　　4. Although he talked like a man of sense, his actions were _____ of a fool.

　　A. these

　　B. that

　　C. those

　　D. any

　　5. Mr. and Mrs. Scott prefer a restaurant in a small town to_____ in so large a city like New York.

　　A. this

　　B. one

　　C. it

　　D. that

　　6. I’m looking for a house. I’d like _____ with a brook around ______

　　A. it; that

　　B. it; it

　　C. it; one

　　D. one; it

　　one用来替代前面出现的单数名词，是泛指概念，通常替代a/an+单数名词；the one用来替代前面提到的特指的单数名词，后面总是有后置定语，有时可用that替代（尤其是在有后置定语的情况下）；ones 用来替代前面出现的复数名词，也是泛指概念；the ones 用来替代前面的特指的复数名词，有时可用those 替代（尤其在有后置定语的情况下）；that 用来替代前面出现的单数可数名词或不可数名词，只能指物，不能指人，相当于the+单数名词或不可数名词。It指代前面提到的事情或事物，强调同一性。例如：

　　例句：

　　Mr. Wang gave me a very valuable present, one that I had never seen.

　　Mr. Wang gave me many very valuable presents, ones that I had never seen.

　　The book on the desk is better than that/ the one under the desk.

　　The books on the desk is better than those/ the ones under the desk.

　　Few pleasures can equal that of a cool drink on a hot day.

　　Why don’t we take a little break?

　　Didn’t we just have one?

　　Meeting my uncle after all these years was an unforgettable moment, one I will always treasure.

　　The Parkers bought a new house but it will need a lot of work before they can move in.

　　练习：

　　1. Why don’t you bring _________ to his attention that you’re too ill to work on?

　　A. that

　　B. it

　　C. his

　　D. him (2011江西)

　　No bread eaten by man is so sweet as _____ earned by his own labor.

　　A. one

　　B. that

　　C. what

　　D. those

　　2.Even if they are on sale, these mobile phones are equal to ____ in price, if not more expensive than, at other stories.

　　A. anyone

　　B. the ones

　　C. that

　　D. the others

　　3. I would rather buy a house in the suburb than ______ in the city.

　　A. it

　　B. one

　　C. this

　　D. that

　　4. Although he talked like a man of sense, his actions were _____ of a fool.

　　A. these

　　B. that

　　C. those

　　D. any

　　5. Mr. and Mrs. Scott prefer a restaurant in a small town to_____ in so large a city like New York.

　　A. this

　　B. one

　　C. it

　　D. that

　　6. I’m looking for a house. I’d like _____ with a brook around ______

　　A. it; that

　　B. it; it

　　C. it; one

　　D. one; it