黑板的英文是blackboard。
blackboard:n.黑板
相关介绍He wrote the word 'pride' in huge letters on the blackboard.

(图片来自网络侵删)
他在黑板上写了一个大大的单词pride。
With a stick of chalk he wrote her order on a blackboard.
他用一截粉笔将她的指示写在黑板上。
On a blackboard, he drew five concentric circles.
他在黑板上画了5个同心圆。