chool and sten We use a / an with singular nouns, when we 5 Day 7 Read the information about al an and the. Then find examples in the text. mention something for the first time. 2 We use the: a when we mention something again. b with superlatives. c with ordinal numbers. d for things that are unique. 7 one. ! We don't use a / an and the before the names of people, countries and cities d