Indefinite article: usage
The indefinite article whose function is that of classification is used to determine only countable nouns in the singular. They include: 1) proper and common nouns, 2) concrete and abstract nouns, 3) animate and inanimate nouns, 4) human and non-human nouns. Common nouns can be either concrete or abstract. Proper nouns are basically concrete.
The individual discussion of animate/inanimate and human/nonhuman nouns in terms of article determination is irrelevant for all of them are common and concrete.
Indefinite article before common concrete nouns
Common concrete nouns include: 1) class nouns, 2) collective nouns, 3) nouns denoting materials. Note that common collective nouns like poultry, police, machinery, etc. and common concrete nouns denoting materials such as air, water, iron and so on are not used with the indefinite article for they are uncountable. (See 2.5. and 2.6.)
2.4.1.1. Indefinite article before common concrete class nouns
The indefinite article is used in the following cases.
a)Before a common concrete class noun denoting a person or a thing which is not already mentioned or known about, either with or without a descriptive attri-
bute, usually after the verbs be and have. He is a writer. He is a famous writer. Have you got a car? I have got a new car. I have a pain in my leg. There is a book on the
Table.
b) In the meaning «any, every» before a noun denoting the called person or thing: A gentleman would never act like this. A parcel is bigger than a packet.
c) Before nouns denoting periods of time: three times a day, twice a week, once a month, etc.
d) In the meaning «one» before nouns of quantity and substantivized numerals: a dozen eggs, a thousand pounds, a hundred times.
e) Before the first noun of a pair that seems a single whole: a cup and saucer, a bucket and spade.
f) Before uncountable nouns that in the context turn into countables meaning «a container or unit of»: I'd like a coffee, please, (a cup/a mug of coffee).
2.4.1.2. Indefinite article before common abstract nouns.
The indefinite article is used in the following cases.
a)In the meaning «a certain amount of or a certain action of» before names of qualities or states, either with or without a descriptive attribute: Have a look at this. He went for a swim. Have a good ride. You need a wash. It is a kindness to tell him the bad news straight away. I have a weakness for chocolate.
Note that words like kindness, weakness and so on may as well render their most generalized meanings — «the qualities of being kind» or «weak» respectively and therefore they may be determined by the zero article. For example: He has always shown kindness to animals. The
President was accused of weakness when dealing with the crisis. (See 2.6.)
Note that some abstract nouns denoting a certain amount of quality or state may be determined by the indefinite article in the case they are given a descriptive attribute: / have a great fear of fire. She fell into a deep sleep. He has a good knowledge of history. Our team put up a good fight.
b) Before nouns denoting processes: He drove off with a crashing of gears and a screeching of tyres. A lot of people have gathered to listen to a poetry reading. He has just had a conversation with his friends. It is necessary to hold a discussion about our future plans.
c) Before nouns denoting phenomena usually with a descriptive attribute — an adjective or ordinal numeral: A heavy rain began to fall. Suddenly we heard a shot, then a second (shot), and a third (shot).
Note that most of abstract nouns denoting phenomena, such as weather, rain, thunder, storm, etc. are uncountable. (See 2.6.)
d) Before nouns denoting periods of time as part of an adverbial phrase: We shall start in a minute. We met an hour ago. Wait a second. This subject was raised a century ago.
e) Before some nouns denoting generalized notions: / have an idea. He has always had a tendency to missing classes.
Note that most of nouns of the group such as time in the meaning «passing of days, months, and years, considered as a whole», space in the meaning «something measurable in length, width, or depth», direction, acco-modation, etc., as well as nouns denoting fields of
knowledge (linguistics, mathematics, history) are uncountable and therefore cannot be determined by the indefinite article.
2.4.1.3. Indefinite article before proper concrete nouns. The indefinite article may be used before names of
people in the meaning «some», showing that someone is unknown to the speaker: A Mrs Brown wishes to speak to you.
In most cases the indefinite article determines a proper noun provided it has acquired a common meaning. Thus it can be used in the following cases:
a) Before a name of a painter to denote his picture: This is a Rembrandt. He never saw a Modigliani.
b) In the meaning «one like or having the qualities of» before names of famous people or literary characters: They say that the young actress is a new Sophie Lor en. Her husband is so jealous. He is a real Othello.
c) Before a proper inanimate noun to specify its kind: This is a good Champagne, (a good sort of Champagne)
d) In the meaning «a particular one» before names of times and places: / can't remember a Christmas when it snowed so much. In 1989 there was a late Easter.
2.4.1.4. Indefinite article in collocations and set expressions.
The indefinite article may be used before a descriptive attribute either preceding or following the noun of any class. For example: He was a tall, good-looking man. This happened on a cold, rainy September day. The novel is a funny, intelligent social comedy. It is a novel of immense intelligence, disturbing and diverting.
Any countable noun must be used with the indefinite article after the words half, rather, such, quite, most in the meaning 'very', what and formally or literally — many: I have rather a headache. He is quite a young man. This is a most interesting film. What a nice day it is today. I've never met such a beautiful girl. Many a small business has failed. (=Many small businesses have failed.)
The indefinite article is used before few and little to denote «not many» or «much»: I'd like to say a few words on the subject. If I have a little time today I'll come to see you.
The indefinite article may be used before a substantivized ordinal number: At first he offered me a book, then a second (book), and a third (book).
Besides, the indefinite article is entered into numerous preposition + noun set phrases which function as adverbial modifier and verb + noun set phrases functioning as one verb.
a) Preposition + noun set phrases: as a result, at a glance, at a stroke, at a loss, in a hurry, in a low/loud voice, in a whisper, in a minute/second, in an hour, in a sense in a word, on a par with, to an extent.
b) Verb + noun set phrases: break a fall, cast/throw a glance, catch a train, catch a cold, do a favour, get in a fury, give a start, have a good time, have a meal, have a swim, have a ride, have a look, have a mind, make a will, make a living, take a fancy.