In this episode:

• 
  
• learn to use the perfect aspect particle 了(le) to talk about actions that have occurred or are completed;
  
• talk about things you “have to do” or “must do” with å¾—(dÄ›i);
  
• form rhetorical questions with the ä¸æ˜¯(búshì)…å—(ma) construction;
  
• listen to a contextual dialogue where James talks about his trip to Beijing.