我们常常可以见到学生唱歌时两种截然不同的情形。一种是学生们用纯净、优美、轻松的声音唱歌,使人感到他们的歌声象银线一样清澈透明,演唱一点也不费劲。尤其值得注意的是,在这些班级合唱中,不仅男同学和女同学一样轻松自如,而且男孩子有时显得更加优美而富有朝气。另一种情况则恰恰相反,学生 We can often see two very different situations when a student sings. One is that students sing pure, beautiful and relaxed voice, making people feel their singing is as clear and transparent as silvery lines, singing is not effortless at all. It is particularly noteworthy that not only male students and female students in these class chorus, as easy and comfortable, and boys sometimes seem more beautiful and vibrant. In the other case, on the contrary, students