北京衹拓大票现代远程教育 1.Cultural background (文化背景) Warm-up questions 1.Have you ever tipped anyone? (你给过某人小费吗？) 2.How much do you know about tipping? (你了解小费多少呢？)1. Cultural background （文化背景） Warm–up questions 1. Have you ever tipped anyone? （你给过某人小费吗？） 2. How much do you know about tipping? （你了解小费多少呢？）