The teacher writes on the board.

老师在黑板上写字。

同一单元的其他句子

• This is my school.这是我的学校。
• I go to school by bus.我坐公交车去学校。
• The classroom is big.教室很大。
• We have a library.我们有一个图书馆。
• Where is the playground?操场在哪里？