4、nin2aand2b.活动7【活动】Learn the conversation.Read the conversationin2dandty to understand the main idea of the conversation.活动8【讲授】Language points1.by的用法2.Whatabout结构3.too...to...结构4.sentence的两层意思5.patient的意义及用法活动9【练习】PracticeRole-playtheconversation.活动10【测试】Exercis