我老师用粉笔在黑板上写字。

Our teacher USES chalk to write on the blackboard.

youdao

粉笔被老师们用来在黑板上写字用。

Chalk is used by teachers to write words on the blackboard.

youdao

粉笔被老师们用来在黑板上写字用。

Chalk is used by teachers to write words on the blackboard.

youdao