1. Simplicity: Kindergarten teachers should use simple and clear language, and avoid using too complicated or abstract vocabulary and grammatical structures, so as to ensure that children can understand and keep up with the teaching progress.

2. Kindness and friendliness: Kindergarten teachers should communicate with children in a kind, friendly and amiable language, so that children can feel the care and respect of teachers and enhance the interaction and trust between teachers and students.

3. Liveliness: Preschool teachers should use lively language to stimulate children's interest and curiosity in learning through vivid, interesting and enlightening expressions, so that they can learn knowledge in a pleasant atmosphere.