👉 In linguistics, "preterpluperfect" is a grammatical construction used in English to indicate that something has already happened or completed. It is formed by adding "-er" to the end of a verb and using the past participle form of the subject (the preteritor case). This construction can be used to express actions that have already occurred, such as "I've eaten lunch," "He's had his breakfast," or "She has finished her homework."
