itonethat作指代的区别.doc

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1、I. itone that三者均可用作代词, 指代前面提到的名词。一般说来, it指代同名同物; one与that那么指代同名异物。I have lost my umbrella; Im looking for it. 该句中it就是指前面的my umbrellaI have lost my umbrella; I think I must buy one. one在该句中表泛指, 因为my umbrella已经丢了The umbrella you bought is cheaper than that I bought. 替代词that在该句中特指“the umbrella I bought

2、, 以区别“the umbrella you boughtII. one与that虽可用来指代同名异物, 但one为泛指, 相当于aan名词; that为特指, 相当于the 名词。所以one所指代的名词的修饰语一般为 aan some any; that所指代的名词的修饰语往往是the this that。A chair made of steel is stronger than one made of wood. 该句中one可以换成a chairThe water in the cup is hotter than that in the pot. 该句中that可以换成 the wa

3、terIII. one只能代替可数名词单数, 代替可数名词复数时用ones; that既可以代替不可数名词也可以代替可数名词单数, 代替可数名词复数时用 those。I like this pen more than that one. one代替可数名词单数penThere were a few young people and some older ones in the house. ones代替可数名词复数peopleMarys handwriting is far better than that of Peter. that代替不可数名词 handwritingThese pict

4、ures are more beautiful than those. those代替可数名词复数 picturesIV. one既可代替事物, 也可代替人, that只能代替事物而不能代替人。有时可以用the one或the ones代替that或those。The one That on the table is mine. 该句中The one代替事物, 并且也可以用ThatHe is the teacher, the one who is loved by the students. 该句中the one代替人, 不能用thatHe advised the farmers to cho

5、ose the best seed-heads, the ones those that had the best color. 该句中the ones代替事物, 并且也可以用thoseV. one一般有前置修饰语, 有时也可有后置修饰语或不用修饰语。而 that不能有前置修饰语, 但可有后置修饰语。Cook was a strict but good captain, one who took good care of his sailors.The water in the well is cleaner than that in the river.VI. it可以替代句中的不定式或从句

6、等, 充当形式主语或形式宾语。one与that均无此用法。It is known to everybody that the moon travels around the earth once every month.I found it hard to get on with her.VII. it与that均可以替代上文全句的内容或局部内容, 而one ones那么不可以。He has saved my life; Ill never forget it. it代替第一分句Tom is painting his house. I am told he does it every four

7、 years. it代替前面分句的局部内容painting his houseLets say we meet here at three oclock. That ought to give you time to buy everything. That代替前面表述的内容相关练习1. Mr Zhang gave the textbooks to all the pupils except _ who had already taken them.A. the ones B. ones C. some D. the others2. I find _ easy enough to get o

8、n with Pam.A. that B. this C. one D. it3. If I can stop her coming to you, I shall do_.A. those B. which C. these D. it4. I havent a pen. Can you lend me_A. these B. those C. them D. one5. _ is necessary that I get the text of my revision typed.A. There B. This C. That D. It6. I took _ for granted that you would stay with us.A. it B. that C. these D. them7. Of all my old friends, the only _ I saw much of was Betty.A. it B. that C. one D. thisKey: 18ADDDDAC