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關閉窗口 不定冠詞a與an的用法比較
一、基本區(qū)別
原則上說，a用于輔音前；an用于元音前。
1. 輔音前用a的例子：
He is a bit of a coward. 他多少有幾分怯懦。
The bread was as hard as a brick. 這面包硬得像塊磚。
I got a friendly reception from them. 我受到他們友好的接待。
The only green thing was a lone pine tree. 綠色的東西只有孤零零的一棵松樹。
A good driver varies the speed of his car according to the condition of roads. 優(yōu)秀的司機會根據(jù)路況不同而改變車子的速度。
I want to buy a hat and a pair of boots, among other things. 除別的東西之外，我還想買頂帽子和一雙皮靴。
His parents give him so much money that he’s got no motivation to get a job. 父母給了他很多錢，因此他根本就沒有找工作的動力。
2. 元音前用an的例子：
But everything has an opposite. 但一切都有相反的一面。
I have an American passport. 我有一份美國護照。
It was an old pine tree in the backyard. 這是后院里的一棵老松樹。
He received an unfair treatment. 他受到了不公平的待遇。
About this time an incident happened. 差不多就在這個時候，發(fā)生了一件事。
After an absence of seven years I went home. 外出7年后，我返回家鄉(xiāng)。
Please write an abstract of this scientific article. 請寫一份這篇科學論文的摘要。
I didn’t receive an acknowledgement of my application. 對我的申請，我還沒收到回信。
Travel to the moon is not a dream but an actual happening. 登月旅行已不是夢想而是現(xiàn)實事情了。
二、易錯說明
hour, honest, honor等單詞的拼寫雖然以輔音字母h開頭，但其讀音卻以元音開頭，因此，前面要用an。反過來，有些單詞雖然以元音字母開頭，但其讀音卻以輔音開頭，那么它們的前面應用a而不是an，這些詞常見的有useful, university, usual, European, united, one-eyed, one-way等。
She comes from a European country. 她來自一個歐洲國家。
He is an honest businessman, according to what everyone says. 根據(jù)大家所說，他是位誠實的商人。
Write me a one-page summary of this report. 替我把這份報告寫出一頁紙的摘要。
A one per cent rise would be a disaster. 升高一個百分點將意味著一場災難。
Father bought a used car from a car dealer. 父親從汽車商那里買了一輛舊汽車。
He doesn’t fit (into) the traditional mold of a university professor. 他沒有大學教授那種傳統(tǒng)的氣質。
另外，對于數(shù)字、字母以及由單詞首字母構成的縮略詞，其前到底是用a還是an，也需根據(jù)讀音來確定，如：
He has an 11-year-old daughter. 他有一個11歲大的女兒。
Our daughter sent us an SOS for some more money. 我們的女兒給我們發(fā)來了再要點錢的求救信號。
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