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。