三、替代表泛指的復數名詞

替代表泛指的復數名詞，通常用ones。如：

Hard beds are healthier than soft ones. 硬板床比軟床有利于健康。

Green apples often taste better than red ones. 青蘋果往往比紅蘋果好吃。

We can lend you plastic chairs or metal ones. 我們可以借給你塑料椅子或者金屬椅子。

These chairs have the great advantage of being much cheaper than conventional ones. 這些椅子具有比普通椅子便宜得多的優勢。

四、替代表特指的復數名詞

替代表特指的復數名詞，通常用the ones。如：

I’d like to try on those shoes. The ones at the front of the window. 我想試試那雙鞋子。櫥窗里前邊的那一雙。

Are they the ones who moved here recently? 是最近搬到這兒來的那些人嗎?

Don’t buy the expensive apples; get the cheaper ones. 別買那價錢貴的蘋果，買那便宜的。

注：在口語中，也可用those來替代表特指的復數名詞，尤其是當其后有of引導的介詞短語或who引導的定語從句時。如：

Waves of red light are about twice as long as those of blue light. 紅色光線的波長約為藍色光線波長的兩倍。

Those of you who wish to go on the trip may sign up here. 你們中間想參加這次游覽的人可以在這里簽名。

His ideas are little different from those of his friends. 他的想法和他朋友的想法沒什么兩樣。

Students who do well in examinations are those [the ones] who ask questions in class. 考試成績好的都是上課愛提問的學生。

五、幾點重要的補充說明

1. 當替代詞one / ones 緊跟在形容詞最高級、序數詞以及this, that, these, those, which, either, neither, another等限定詞之后時，通常可以省略。如：

I think my dog’s the fastest (one). 我想我的狗是跑得最快的(一只)。

Either (one) will suit me. (這兩個當中)哪一個對我都合適。

Let’s have another (one). 咱們再來一個吧。

She looked at each (one) carefully before she chose. 她仔細地看了看每一個，然后才挑選。

Which (one) would you like?—That (one) looks the nicest. 您要哪一個?——看起來那個最好。

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