Use and Non-use of articlesOnline version Rules to use articles in English. by Yisel Gómez 1 Use article "the" when... 2 Use article "a - an" when... 3 Use "no article" when... 4 Examples for article "the" 5 Examples for article "a - an" 6 Examples for Non-use of articles the noun has been mentioned before. the noun is unique. the noun is defined by a phrase or clause that follows. the adjective before the noun defines it. there is a superlative. the noun is one of many. the noun is singular. the noun hasn't been mentioned before. a plural or uncountable noun is used to make a generalisation. the noun is a singular proper name. ____World, ____moon, ____universe. ____ idea of these questions. ____ correct answer is... English is ____ best subject. I saw a car, ____ car was red. My dad is ____ teacher. ____ dog is a domestic animal. ____ apple a day, keeps the doctor away. ____ bread is delicious. ____ Google is the most famous browser. ____dogs are domestic animals. ____NY is the city that never sleeps.