不定代词不定代词具有名词特性和形容词特性。但是，ones不能直接被基数词修饰，比如不能说two ones, six ones，但是可以说two red ones, six big ones。one(s)与替代词it, that/those的用法区别1）one(s)和that/thosethat，those特指上文中提到的名词，以避免重复，一般都带有后置修饰语，比较下列句子：The photograph of you is much better than that ( = the photograph) in your album.你这张照片比你照相册里的那张好得多。结构分析：The photograph of you是主语，is much better是系表型谓语，其中is是系动词，much better是形容词组（better是比较级），作表语，than that ( = the photograph)是比较状语，in your album是地点状语。I want a photograph of you. Would you give me one ( = a photograph)?我要一张你的照片。你能给我一张吗？结构分析：I是主语，want是谓语，a photograph of you是宾语。you是主语， would giv是谓语，me是间接宾语，one ( = a photograph) 是直接宾语。
