Make out what was written on the blackboard.
看清黑板上的字。
Your mind as blank as a blackboard in August.
你的脑子空得像八月的黑板。
The teacher told him to clean the blackboard.
老师告诉他擦黑板。
The teacher is writing on a bamboo blackboard.
教师在竹制的黑板上教课。
Derivatives were written across the blackboard.
黑板上写满了数学导数。
Please look at the blackboard and read after me.
请看黑板，跟我读。
The blackboard is at the front of the classroom.
黑板在教室前面。
The blackboard is in the front of our classroom.
黑板在教室的前面。
Figures were written on the blackboard in the front.
数字写在前面的黑板上。
I can't bear the sound of chalk scraping a blackboard.
我忍受不了粉笔在黑板上的刮擦声。
The teacher writes a beautiful hand on the blackboard.
这位老师的板书漂亮。
She got angry and wiped out her name on the blackboard.
她生气了，于是就把黑板上她的名字擦掉了。
The teacher chalked out a map of Asia on the blackboard.
老师用粉笔在黑板上画了一张亚洲地图。
The teacher drew a diagram on the blackboard with chalk.
老师在黑板上用粉笔画了一个图表。
Afterwards, he began to write something on the blackboard.
后来, 他开始在黑板上写东西。
From the opposite corner of the blackboard leans an abacus.
黑板得另一角斜靠着一个算盘。
Listen to the tape, answer the questions on the blackboard.
听录音，回答问题，板书关键词。
Andy and bill are going to clean the windows and blackboard.
安迪和比尔擦窗户和黑板。
The teacher knocked on the blackboard to catch our attention.
老师敲了敲黑板以引起我们的注意。
A. Let me clean the blackboard. B. Lets clean the blackboard.
让我擦黑板。
The blackboard is a primitive teaching aid used for centuries.
黑板是一种原始的教学辅助工具，已经被使用了数百年了。
The teacher drew an angle of ninety degrees on the blackboard.
老师在黑板上画了一个90度得角。
There is a box fixed beneath the chalk rail of the blackboard.
黑板下方横木条底下设有一个盒子。
Ask the students to sit down where they can see the blackboard.
让学生坐在他们能看到黑板的地方。
Who wants to come here and write one sentence on the blackboard?
谁想上来在黑板上写一个句子？
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