How do you teach the difference between “a” and “the” during conversation class?

Helping English language learners distinguish articles remains important in advanced ESL and English conversation classes “Great things are done by a series of small things brought together.” ―Vincent Van Gogh (1853-1890) Dutch painter Does it make sense to emphasize the difference between articles (a, an, the) in an English conversation class? Perhaps. Context matters. Conversation class should...