美术是一种视觉的艺术,它必须以可视的现象反映生活,依靠形象的感染力打动观者的感情,去达到教育的作用。因此,素描基础训练必须首先培养和发展学生视觉的观察能力。只有看得正确,才能达到画得正确,深入生动地表现,依赖于敏感的视觉感受和正确的观察方法,依赖于对被描绘对象的深入理解。当我们开始写生时,对对象只是一个初步的感觉和印象,尽管这一印象感觉比较新鲜,但是如果只停留在初步的粗浅的印象来作画,那就会被对象表面和偶然的细节所迷惑,使你无法深入下去,有时甚至会产生一种错觉而造成画面的种种错误。所以这种初步的视觉感受必须深化,从感性 Art is a kind of visual arts. It must reflect the life with the visual phenomenon and rely on the contagious power of the image to impress the sentiment of the viewer to achieve the function of education. Therefore, the basic sketch training must first develop and develop students’ visual observation ability. Only rightly can we achieve the correct drawing, the vivid expression, the sensitive visual feeling and the correct observation method depending on the deep understanding of the depicted object. When we begin to sketch, the object is only a preliminary impression and impression. Although this impression is rather fresh, if we just stay in the initial superficial impression and paint it, we will be fooled by the surface and occasional details of the object, So you can not go further, and sometimes even create a false impression of the errors caused by the picture. So this initial visual experience must be deepened from perceptual