This study aimed to invent a principle of creating example sentences based on considerations given to the functions of examples in the processes of grammar learning and teaching. To that end, the functions of grammar examples were considered through the literature review in terms of understanding, use, and content. This stage was followed by the establishment of standards for analyzing the appropriateness of the examples. The appropriateness of the examples in the Korean language class materials was analyzed against the standards, and the principle of creating example sentences was achieved inductively. The inductive results delivered in specific statements are as follows. From the perspective of grammar and understanding, example sentences should: ①be appropriate against the target-grammar meaning and usage; ②present various syntactic patterns of the target grammar; ③clearly present the context in which the target-grammar items were used; ④ensure the grammar and vocabulary used in the examples have been fine-tuned to the levels of learners’ grammar and vocabulary abilities; and ⑤be based on examples that are hierarchically arranged. From the viewpoint of usage, the identified principle-statements were: ⑥Example-sentences should allow instant applications to real-life communication, along with ❸; From the viewpoint of content, ⑦the sentences should contain accurate information in terms of content; and ⑧the sentences should be devoid of any biases or stereotypes regarding particular countries, gender, occupation, etc. (Seoul National University)