1.她的獨(dú)生女兒在山東大學(xué)學(xué)法律。

誤：Her only one daughter studies law at Shandong University.

正：Her only daughter studies law at Shandong University.

析：only作形容詞，置于單數(shù)名詞之前，意為“惟一的、僅有的”，one是多余的。

2.他們將在一兩天內(nèi)返回。

誤：They will return in one or two day.

正：They will return in a day or two (或one or two days).

析：in a day or two一兩天內(nèi)是固定詞組，用a不用one。

3.我已完成了三分之二的工作量。

誤：I have done two-third of the work.

正：I have done two-thirds of the work.

析：分?jǐn)?shù)表達(dá)：一般采用“分子（用基數(shù)詞）+連字號(hào)（可省略）+分母（用序數(shù)詞+s，分子是one時(shí)不加s）。

4.這些學(xué)生是20世紀(jì)末出生的。

誤：These students were born at the end of the twenty century.

誤：These students were born at the end of twentieth century.

正：These students were born at the end of the twentieth century.

析：第幾世紀(jì)用the+序數(shù)詞+century表示。

5.這是一座20層的大樓。

誤：This is a twenty-stories building.

正：This is a twenty-story building.

析：“數(shù)詞+連字符+單數(shù)名詞”構(gòu)成復(fù)合形容詞。

6.我爸爸曾經(jīng)去過那兒一兩次。

誤：My father has been there one time or two times.

正：My father has been there once or twice.

析：一次用once，兩次用twice，三次或以上用數(shù)詞+times。

7.我們的作業(yè)已完成一半。

誤：Our half homework is done.

正：Half our homework is done.

析：half our homework是half of our homework的省略式。

8.這是8號(hào)房間。

誤：It is 8 Room.

正：It is Room 8.

析：編號(hào)一般用“名詞+基數(shù)詞”表示。

9.他們已經(jīng)學(xué)完了前三課。

誤：They have studied the three first lessons.

正：They have studied the first three lessons.

析：序數(shù)詞應(yīng)放在基數(shù)詞前。

10.我步行到學(xué)校要花一個(gè)半小時(shí)。

誤：It takes me one and a half hour to get to school on foot.

正：It takes me one and a half hours to get to school on foot.

析：句中的hour要用復(fù)數(shù)形式。再如：one and a half months一個(gè)半月。

11.他們?nèi)齼蓛傻貋砹恕?/p>

誤：They arrived by two and three.

正：They arrived by twos and threes.

析：基數(shù)詞可用作可數(shù)名詞復(fù)數(shù)，用于某些固定詞組中。