摘要
It is clear that uses of written language are more restricted than those of spoken language. Speech formed a part of human society long before the invention of writing, and even today, the majgority of the many thousands of languagesspoken all over the world have no written form. Nor do all the speakers of these languages that do have written forms ever have the opportunity to
出处
《外语学刊》
1980年第4期49-53,共5页
Foreign Language Research