Some uses of Definite Article
The definite article is used: #1. With nouns modified by adjectives in the superlative degree. Miss Tox had the softest voice that ever was heard. (Dickens) #2. with nouns in word-groups the first component of which is some, many, none, most and the second a noun with the preposition of. Most of the gentlemen looked both angry and uncomfortable. (Voynich) #3. with nouns modified by the pronoun same and the adjectives wrong, right, very. То all invitations he replied with the same courteous and positive refusal. (Voynich) I do wish we had not opened the door of the wrong room. [...]
Articles with Class Nouns modified by Attributes
The definite article is used when a noun is modified by an attribute that shows that a particular object is meant, i. e. by an attribute that might be called a particularizing attribute. A particularizing attribute is used to single out an object from all the objects of the class, to point out one particular object or group of objects. The use of a particularizing attribute implies the idea of ‘этот’. A particularizing attribute can be expressed by an of-phrase or an attributive clause. It is always used in post-position. He knocked at the door of a very neat house. [...]
Indefinite Article with Class Nouns
Class nouns are used with the indefinite article: When the speaker presents the object expressed by the noun as belonging to a certain class. She has a watch of her own. On the green surface of the lake a little boat, with white wings faintly fluttering, rocked in the dewy breeze. (Voynich) Close beside them grew a rose-bush covered with scarlet hips. (Voynich) In the plural no article is used in this case. If the idea of number is implied the noun is preceded by the pronoun some. Some, as well as the absence of articles with class nouns [...]
Article
The article is a structural part of speech used with nouns. There are two articles in Modern English: the indefinite article and the definite article. Definite Article The definite article has one graphic form the. The definite article has developed from the Old English demonstrative pronoun se and in some cases it has preserved this demonstrative meaning in Modern English. The use of the definite article shows that a particular object is meant. Indefinite Article The indefinite article has the forms a and an. The form a is used before words beginning with a consonant sound (a [...]