09年高考英语语法精要讲解五：指示代词

that, one, it的区别
　　①one 代替可数名词，表示泛指; the one 表示特指; that代替不可数名词 ，表示特指; 它们都可以代替前面提到的同一类事物; it指前面提到的同一事物。
　　●There is an old engineer and a young one here.
　　●His attitude to me is that of a friend.
　　●I’ve lost my pen. Have you seen it? (Have you lend me one?)
　　② the / this / that / these / those adj. one / ones
　　I’ll try on a few of these shirts. Please pass me that white one.
　　③the one后面可以接介词短语或定语从句
　　●The boy in your class is taller than the one in our class.
　　●The skirt (that) she made herself is more beautiful to wear than
　　the one (that) she bought last year.
　　④ one 不能代替前面提到的不可数名词
　　Don’t use powdered milk. Use this fresh milk. (不可用 fresh one)
　　⑤those , ones
　　● These machines are better than those we made last year.
　　● ---I’d like a pound of apples.
　　---Which ones?
　　---The red (ones).
　　● ---Why don’t we take a little break ?
　　---Didn’t we just have ? (NMET2000)
　　A. it
　　B. that
　　C. one
　　D. this
　　(C)