第一，迷你对话
A: What is Mary doing with her friends?
Mary在和她的朋友在干什么？
B: She's giving them a chalk talk of a mathematics problem.
她正在边板书边说一道数学题。
A: She's really like a little teacher.
她真像一个小老师。
第二，地道表达
chalk talk
1. 解词释义
Chalk talk的意思是“边板书边说话”。
2. 拓展范例
e.g. The teacher gave us a chalk talk before the English competition.
老师在英语大赛之前给我们做一次图示讲课。
e.g. The coach gave his team a chalk talk before the game.
教练在比赛前给队员们连写带画地讲解了一番。
