求翻译：在假期的前一个月，我一直在补课，是初二上册的英语和数学。初二上册的英语和初一时的英语完全不同，有很多会不懂。是什么意思？

A month before the holidays, I've been extra lessons, is on the second day of English and mathematics. And when the first volume on the second day of English speaking totally different, many will not understand.