不可數(shù)名詞的數(shù)
（1）一般說來抽象名詞為不可數(shù)名詞，但當(dāng)抽象名詞表示具體的東西時(shí)，可用作可數(shù)名詞且詞義發(fā)生變化，主要類型如下：
①抽象名詞表示具有某種特性、狀態(tài)、感情情緒的人或事。如：
抽象名詞（不可數(shù)）具體化（個(gè)體名詞，可數(shù)名詞）
in surprise驚訝地 a surprise一件令人驚訝的事
win success獲得成功 a success一個(gè)(件)成功的人(事)
win honor贏得榮譽(yù) an honor一個(gè)(件)引以為榮的(事)
Failure(失敗)is the mother of success a failure失敗者
失敗是成功之母。
by experience靠經(jīng)驗(yàn) an experience一次經(jīng)歷
youth青春 a youth一個(gè)青年人
have pity on sb.憐憫某人 a pity可惜的事情
with pleasure樂意 a pleasure樂事
②抽象名詞與a(an)連用，淡化了抽象概念，轉(zhuǎn)化為似乎可以體驗(yàn)到的動(dòng)作、行為或類別。如：
A knowledge of English is a must in international trade.
Would you like to have a walk(swim, bath, talk)with me?
It is waste of time reading such a novel.
She made an apology to her mother for her wrong doings.
(2)物質(zhì)名詞是不可數(shù)名詞，但表示數(shù)量或種類之多時(shí)，可以用作可數(shù)名詞。如：
①物質(zhì)名詞有形或數(shù)的相應(yīng)物體，有單、復(fù)數(shù)。如：some coffee一些咖啡，a coffee一杯咖啡，three coffees三杯咖啡，some drink一些飲料, a drink一杯飲料，three drinks三杯飲料，his hair他的頭發(fā)，a few grey hairs幾根白發(fā)，glass玻璃，a glass一只玻璃杯。
②物質(zhì)名詞有前置后置修飾時(shí)，前面要使用不定冠詞。
have breakfast The road is covered with snow.
have a wonderful breakfast They have a heavy snow every year.
Time and tide wait for no man.
We had a wonderful time last night.
(3)有復(fù)數(shù)形式的不可數(shù)名詞
①有些抽象名詞往往以復(fù)數(shù)形式出現(xiàn)，起到一種豐富語言感情色彩或強(qiáng)調(diào)某種特殊狀態(tài)的作用。如：
Use your brains, please.
They have smoothed away the difficulties.
Have you made preparations for tomorrow’s meeting?
Many thanks for your kindness.
No pains, no gains.
After many failures, they finally succeeded.
②有些物質(zhì)名詞以復(fù)數(shù)形式出現(xiàn)，表示數(shù)量之多，范圍之廣。如：
The boy burst into tears at the bad news.
The rising waters did a lot of harm to the crops.
The stone bridge broke down in heavy rains.
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