About to-infinitive, Chat GPT says this. Is this all true? The difference between the two uses of to-infinitive clauses lies in their functions within a sentence: 1. Descriptive Use: - Examples: "a request to see someone," "keen to get on." - These to-infinitive clauses add descriptive information, indicating a purpose, intention, or characteristic associated with the noun or adjective. They provide additional details but do not strictly define or limit the reference of the noun or adjective. 2. Defining Use (Type of Non-finite Relative Clause): - Examples: "the man to save us," "the method to use," "nice to listen to." - In these cases, the to-infinitive clauses function in a way similar to non-finite relative clauses. They serve to define or specify the noun by indicating a particular person (the man) or thing (the method) associated with the action expressed in the infinitive. This use is more defining or restrictive because it narrows down the reference. In summary, the first set of examples provides descriptive details, while the second set, especially in contexts like "the man to save us," serves a more defining role by specifying the person or thing related to the action described in the to-infinitive clause.