| 1. | Who rubbed my figures off the blackboard ?
谁把我在黑板上的数字擦掉了？ |
| 2. | He chalked out a design on the blackboard .
他用粉笔在黑板上勾划出一个图样。 |
| 3. | He wrote the words on the board and some of the students automatically wrote them down in their notebooks .
他把这些词写在黑板上，有些学生随手把它们抄在笔记本上。 |
| 4. | We ' ll score on the board and see who wins
我们将在黑板上记分，看看哪一组获胜。 |
| 5. | The teacher wrote down the new words on the blackboard
老师在黑板上写出新单词。 |
| 6. | I ’ ll write two study tasks on the blackboard
我在黑板上给大家写上两个学习任务。 |
| 7. | The proof is set out , step by step , on the blackboard
求证已一步步地写在黑板上。 |
| 8. | The professor wrote an equation on the blackboard
教授在黑板上写了一个等式。 |
| 9. | Mary is writing her name on the blackboard
（玛丽正把她的名字写在黑板上。 ） |
| 10. | The teacher ' s chalk grated on the blackboard
老师的粉笔在黑板上发出刺耳的摩擦声。 |
