黑板英语作文

在日常学习、工作抑或是生活中，大家都经常看到作文的身影吧，作文是从内部言语向外部言语的.过渡，即从经过压缩的简要的、自己能明白的语言，向开展的、具有规范语法结构的、能为他人所理解的外部语言形式的转化。那么你知道一篇好的作文该怎么写吗？下面是小编帮大家整理的黑板英语作文，仅供参考，希望能够帮助到大家。

Anyone who has ever been to school would have seen many blackboards big and small on which characters in different colors of chalk are written. The blackboard is a kind of cutural tool. It is usually made of wooden boards four to five eenlimeters thick in the shape of a rectangle. It is painted black on the surface with black pednt. Underneath there is a groove for dust. With the development of the educationaI cause, there has been an increasing development in cultural facilities and equipment. The varicty of blaekboards is on the rise. There are glass-made blackboards, velvet blackboards made on the basis of the function of statics, magnetic black-boards made according to the function of magnetics, etc.

The blaekboard is so common and unattractive in our life, yet it has played an important role in our study, Our teachers have written equation after equation and solved countless problems on it. It is such a common rectangular blackboard, but it is the golden key to the door of the treasure house of knowledge.