抽象名詞可以用複數形式嗎

galychan：
你也應知道在英文文法上名詞一般有四種： (1)普通名詞(common noun) (2)專有名詞( proper noun) (3)集合名詞(collective noun)(4)抽象名詞(abstract noun). 你不要被混淆而苦惱, 答案其實很簡單, 因為collective nouns和abstract nouns 只是不同形式的common nouns, 所以假如他們加了s 或es 的話, 好像你上述的difficulties 或 youths, 他們便變回一般common nouns了。
http://www.chompchomp.com/terms/collectivenoun.htm

請你進入這網頁, 會令你更清楚, 祝學業進步。

An abstract
noun can be either a countable
noun or uncountable noun.

Abstract nouns that refer to events are almost
usually countable: a noise; an idea; an opinion; a pain; a meeting.



Uncountable nouns
Uncountable or mass nouns are the names of materials, liquids,
abstract qualities, collections and other things which we do not see as
separate objects.
Most uncountable nouns are singular with no plurals. e.g.:
wheat, sand, weather, water, wool, milk

We cannot use numbers with uncountable nouns. They are also not
normally used with the article a/an.



Here is a list of common words which are usually uncountable in
English. Corresponding countable expressions are given in brackets.


advice (a piece of advice)

baggage (a piece of baggage)

bread (a piece of bread )

chess (a game of chess)

chewing gum (a piece of chewing gum)

equipment (a piece of equipment)

furniture (a piece of furniture)

grass (a blade of grass)

information (a piece of information)

lightning (a flash of lightning)

luck (a bit/stroke of luck)

luggage (a piece of luggage; a bag)

news (a piece of news)

thunder (a clap of thunder)

travel (a trip)

work (a job)



Countable or uncountable
The
following rules help to see whether a noun is countable or
uncountable.

Illnesses
The names of illnesses are usually uncountable in English. e.g.: chickenpox, measles, cancer, flu etc.
If you have had chickenpox, you can’t get it again. But note that the words for some minor ailments are countable. e.g.: a cold, a pain

I have a bad headache.
Mixed uses
Many nouns have both countable and uncountable uses, sometimes with a
difference of meaning.

2010-04-05 11:43:59 補充：
Words for materials are usually uncountable. But note that the same word is often used as countable noun to refer to something made of the material.

* Have you got any coffee?
* Could I have two coffees? (= two cups of coffee)

2010-04-05 11:44:09 補充：
Many abstract nouns are uncountable when used in a general sense. The same noun can be countable in a particular sense.
* Take your own time. (uncountable)
* Have a good time. (countable)

2010-04-05 11:45:22 補充：
Plural uncountable nouns

Some uncountable nouns are plural. They have no singular forms with the same meaning, and cannot be used with numbers. e.g.: trousers, jeans, pyjamas, pants, scissors, spectacles, glasses, arms, goods, customs, groceries, clothes and thanks

2010-04-05 11:45:36 補充：
e.g.

* Have you bought the groceries?
* Many thanks for your help.