There were more than seven hundred people in my junior class alone back home.
问题描述：
There were more than seven hundred people in my junior class alone back home.
What dose “alone back home”here mean?
答
那3个词不是一起的.
back home 在家乡,在老家
alone 单独的,仅仅.这个词是修饰 in my junior class 的
在我的老家,仅仅我的（高）二年级就有700多人.
junior,肯是高二,也可能是大三,视情况而定.