Topic
Articles are very difficult to learn because there are many rules, many exceptions, and many special cases. It is possible, however, to learn a few rules that will help you to use articles correctly much of the time.
Nouns in English can be either countable or uncountable. If a noun is countable, it must be either singular or plural. In addition to these general types of nouns, there are two types of articles: definite (specific) and indefinite (general).
Article Usage with Noun Types