As a first-person pronoun only, the word "I" in ancient Chinese means to claim oneself. Shuo Wen Jie Zi: Giving up one's life is self-calling. In other words, as the first personal pronoun, it is the same as me, Yu, Yu, servant and fool.

However, due to different usages, "I" is different from other first-person pronouns.

There is a passage in Shuo Wen Jie Zi Zhu: "Give yourself up and call yourself. Not only does the cloud call itself, but the cloud gives itself to the caller, takes it from me and is ancient to me. Give alms. I use my own toilet in public, but I claim to be me. " It means: "I" is interpreted as "self-calling", not only "taking", but also "giving" and "giving me"; I am "in the crowd", and now I call myself "I". Among them, there are two meanings: "Give me" is the object; "Crowd" means "we".

According to the above materials, we can know that:

1, "I" can be used as an object.

Every first person pronoun used as an object uses me more. Such as "Time waits for no man", "Don't bully me", "Know me", "What can I do", "How to teach me" and so on. I am an object. These "I" as objects cannot be replaced by "I" and "Yu" (ancient Chinese).

2. "I" is often used to mean "we".

When referring to us and ourselves, use "I" more. For example, "I whip first", "not my race" and "a threesome must have my teacher" and so on. "I" refers to us and ourselves.