back back home over
问题描述：
back back home over
she missed her friends back in Peru.这里的back
she still misses her friends back home.这里的back
she communicates with them very often over the Internet.
答
前两句中back意思一样,都是副词用法：以前.例如：She left back in November.她十一月份就已经离开了.
提问句的意思：
她想念她秘鲁的朋友们.
她仍然想念她家乡的朋友.
第三句中over 是介词用法：利用,通过
3.她经常和他们通过互联网联络.