語音教学中使用的表示發音部位的教具,無論是挂圖或者模型,一般都是只能表示固定的發音器官的位置和形状,至于發音过程中發音器官的活动,这种教具就無法表示出来了。这种缺点,虽然有教师的發音示范和形象的講解来弥补,可是总不如使用直观教具的效果好。用教具来講解,可以使教学时間縮短,同学理解得透徹,得到的知識也易于巩固。 The teaching aids used in phonetic teaching to indicate the pronunciation parts, whether it is a wall chart or a model, generally can only represent the position and shape of a fixed vocal organ. As for the vocal organs in pronunciation process, such teaching aids can not be expressed. This shortcoming, although there are teachers to explain the pronunciation of examples and images to make up, but always not as good as using visual aids. Teach to teach, can make teaching time shortened, students understand thoroughly, get the knowledge is also easy to consolidate.