很多T20大学需要有4年学某一种外语。一般7,8年级初中如果学同一门外语，申请大学时算等同于一年高中的外语。

如果你现在换外语从头来，那就一直要上到高中四年级。可能因此少学一两门其它课。

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 language.
• At least two years of laboratory science (including physics and chemistry for students interested in engineering).
• At least two years of history.