Temporal prepositions in Chinese (Simplified) grammar are important for learners to understand and use correctly in order to convey the time-related context of a sentence. Common temporal prepositions include 在 (zài) for “at” or “in,” 从 (cóng) for “from,” 到 (dào) for “until,” and 以后 (yǐhòu) for “after.” Mastering these prepositions is essential for providing clear and accurate communication regarding the timing of events and actions.