The teacher wrote down the new words on the blackboard. 老师在黑板上写出新单词。
The teacher wrote on the blackboard with a piece of chalk. 老师用一支粉笔在黑板上写字。
Please raise your head and look at the blackboard. 请抬起头来,看黑板。
blackboard
[ noun ] sheet of slate; for writing with chalk <noun.artifact>
Blackboard \Black"board`\ (bl[a^]k"b[=o]rd`), n. A broad board painted black, or any black surface on which writing, drawing, or the working of mathematical problems can be done with chalk or crayons. It is much used in schools. In late 20th century similar boards of a green slate as well as some colored white became common; wrioting on the slate bioards may be done with chalk, but writing on the white boards is done with colored pens, such as grease pens, which leaves a trace that can be easily erased. The newer boards, usualy called {chalkboards} are nevertheless still sometimes referred to as blackboards.
On the domestic scene, meanwhile, everyone in Washington should write on a blackboard ten times a day, "Tax increases are bearish."
"To labor, Salinas is the political version of fingers clawing on the blackboard," said George Grayson, an authorityon Mexican politics at the College of William & Mary in Williamsburg, Va.
A tart-tongued and practical man who keeps the daily price of Kansas wheat chalked up on his Washington blackboard, he says such ideas amount to "Walden Pond agriculture, complete with a three-legged dog named Lucky who reads the Saturday Evening Post."
You can't do this with a piece of chalk on a blackboard or a felt-tip pen on a transparency; they're simply too slow and cumbersome.
The blackboard says "thanks, mushroom" and "hello, ice" in seven different languages.
He would stand before a blackboard and say: "Yesterday, 35,471 children learned that c-a-t spells cat.
Using blue, pink and yellow chalk, teacher Hiroo Nemoto draws arrows and diagrams on the blackboard as he explains chemical reactions.
"We didn't exactly stand at the blackboard and tell them how to sit down and the rest," he said. "You would just throw down the spray cans on the floor and there'd be an explosion of activity.
Or make the blackboard fall off and kill me.
The sprayer doused a blackboard with water and then Quayle aimed it in the direction of the press corps.