签证和身份是两码事。签证是入境的钥匙,入境之后签证过期甚至被revoke都不影响你在境内的身份。学生签入境的时候会获得学生身份,i94上Admit Until应为D/S,如果不是的话要立刻联系学校国际生办公室找CBP帮你改正。 D/S的意思是Duration of Status。在这个状态下you may remain in the United States so long as you maintain your nonimmigrant student status, which includes finishing your program by the program date listed on your Form I-20