在正式的邀请函中，需要表达时间和地点信息。以下哪种表达方式最符合正式书面语的格式规范？
- 时间：2024年3月15号下午2点，地点：学校大礼堂
- 时间：2024/3/15 PM 2:00，地点：学校大礼堂
- 时间：三月十五日下午两点，地点：我们学校的大礼堂
- 时间：2024年3月15日下午14时，地点：本校大礼堂 (correct answer)
Explanation: When you encounter questions about formal Chinese written communication, focus on the specific conventions that distinguish formal language from casual speech or informal writing. Formal invitations in Chinese follow strict formatting rules for dates, times, and institutional references. Option D demonstrates proper formal conventions in several key ways. First, it uses "日" (day) rather than "号" for the date, which is the standard in formal documents. Second, it employs "14时" (14:00 hours) instead of "下午两点," following the 24-hour clock system preferred in official contexts. Finally, it uses "本校" (this institution) rather than "学校" or "我们学校," which creates appropriate institutional distance and formality. Option A uses "号" for dates and "点" for time, which are more conversational. Option B mixes Arabic numerals with English abbreviations ("PM"), creating an inconsistent and informal hybrid style inappropriate for Chinese formal writing. Option C uses Chinese numerals for the date ("三月十五日") and includes the possessive "我们学校的," making it sound too personal and casual for a formal invitation. The key pattern to remember: formal Chinese invitations prefer Arabic numerals for dates with "日," 24-hour time notation with "时," and institutional language that maintains proper distance. Watch for these formality markers on the AP exam, as questions often test your ability to distinguish between spoken Chinese patterns and formal written conventions.