英音 ['blækbɔ:d] ;美音 ['blæk,bord]] ;名词
sheet of slate; for writing with chalk
Come to the blackboard.
There is a notice on the blackboard telling the students where to have their English lesson, but the time has been blacked out
a piece of chalk or chalklike substance in crayon form, used for marking on a blackboard or other surface.
I didn’t read the notice on the blackboard, nor did she.
For today's homework, make sentences with the words on the blackboard, learn the text by heart and do the exercises on page 54.
It was furnished with some old tables, a blackboard,and an old stove.
When you' ve copied down the exercise that' s on the blackboard, we' ll go on with the next one
Write the answers in a book,on the blackboard,etc
"He returned to the blackboard, took a piece of chalk, and wrote in large letters, ""VIVE LA FRANCE."""
Chalk sth up ;write sth with chalk,esp on a blackboard