P的建议是四年外语，所以报P学4年外语最好：）

If possible, we expect students will complete the following courses before beginning study at Princeton: 

• Four years of English (including continued practice in writing)
• Four years of mathematics (including calculus for students interested in engineering)
• Four years of one foreign language
• At least two years of laboratory science (including physics and chemistry for students interested in engineering)
• At least two years of history