本人现在已经是海外留学生，在南非读高中3年了。现在要申请墨尔本大学，不知道还需不需要读预科？

本人现在已经是海外留学生，在南非读高中3年了。现在要申请墨尔本大学，不知道还需不需要读预科？ For undergraduate applicants:
within the last 2 years have satisfactorily completed at least the first year of a tertiary course taught and assessed entirely in English;
or within the last 5 years have satisfactorily completed at least a two year tertiary course taught and assessed entirely in English;
按照这个条件来说你的英语成绩是可以免的。
To be eligible for entry to an undergraduate degree you must fulfill all of the following requirements:
Completed the Victorian Certificate of Education (VCE) or an equivalent qualification
Completed each of the prerequisite subjects for the course and any prerequisite tests, interviews or auditions (see Course Search for details about prerequisite subjects and scores)
Achieved the required overall scores and grades in each of the prerequisite subjects (see Course Search for details)
Met the English language requirements
我不了解南非的高中算什么。我建议你仔细看看下面的链接，并且直接给学校发邮件问一下。