粉笔

例句：

1. 1. He used a piece of chalk to write on the board.
   他用一块粉笔在黑板上写字。
2. 2. The teacher asked the students to use their pencils to draw the picture.
   老师要求学生们用铅笔画这幅画。
3. 3. The student took out his chalk and started drawing.
   那名学生拿出他的粉笔开始画画。