写教室作文时，可以按照以下结构进行：

开头

自我介绍：Hi, I’m... I’m a boy/girl. I’m ...years old.

引出教室：This is my classroom.

中间

描述教室的大小和颜色：It’s very big/small and...（颜色）

描述教室内的物品及其位置：

窗户、黑板、灯、图片等：There are big windows, a blackboard, lights, and pictures.

桌椅、电脑等：There are desks and chairs, a teacher’s desk, and computers.

墙壁、地板等：The walls are...（颜色或材料），The floor is...（颜色或材料）。

结尾

总结个人感受：I like my classroom because...

My Classroom

Hi, I’m Li Ming. I’m a boy. I’m 12 years old. This is my classroom. It’s very big and bright. The walls are white and the floor is brown.

In the classroom, there are many things. There are big windows, a blackboard, and lights. There are also many desks and chairs. In front of the blackboard, there is a teacher’s desk with a computer on it. On the walls, there are some pictures and a clock.

I like my classroom because it’s a nice place to learn. There is everything I need for my study.

希望这个例子能帮助你写出一篇优秀的教室作文!