This document discusses expressions used to check for understanding in conversations. It provides examples of expressions to check understanding like "Do you get it?" and responses that indicate understanding like "Yes" or confusion like "I'm sorry, I don't understand." It also gives an example dialogue between two students, Rina and Sindy, where Sindy uses the expression "Do you get my point?" and Rina responds with "I'm not sure I get your point" to indicate a lack of understanding.