explanation: among the three people walking together, there must be someone who can be my teacher. It means that we should learn from all those who have strengths with an open mind.

3. When three people walk together, there must be a teacher who is worth learning from. Choose their advantages and learn from them; We should correct their shortcomings according to our own situation. This expresses an extremely modest learning attitude. No matter who has a skill or insight, he should learn from him, and take a warning from others' shortcomings and mistakes, and don't repeat them.

Source: The Analects of Confucius: "In a threesome, there must be a teacher. Choose the good and follow it, and change it if it is not good. "

grammar: complex sentence; Make clauses; There must be a teacher in a threesome. So, where is there a teacher in the sea? People who are really eager to learn are not limited to special and fixed teachers, and they can ask questions without shame everywhere.

on the other hand, "choose the good ones and follow them, and change the bad ones." That is to say, in the article "Liren", "See the sage Si Qi Yan, see the sage and introspect." The advantages of teachers are certainly worth learning, and the shortcomings of teachers can also be used for reference. The key is not to worship blindly.

of course, I say so. In fact, teachers are somewhat idealistic in our eyes, and some are surrounded by a sacred halo, which makes it difficult for us to distinguish between their strengths and their weaknesses. So we have to be near Zhu Zhechi, and those who are near ink are black.