blackboard用法例句
1、There was a blackboard with seven names chalked on it.
黑板上用粉笔写着7个人名。
2、Teaching off a blackboard is boring, and undoubtedly turns people off.
照本宣科枯燥乏味，无疑会使人们丧失学习兴趣。
3、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。