1. In back of means located behind.
Pattern 1: noun + in back of + noun
There is a beautiful tree in back of our house.
Pattern 2: verb + in back of + noun
Your sister sits in back of me in class.
Worlds Biggest Islands
Hainan, an island province of China and the nation s southernmost point, is known for its tropical climate, beach resorts and forested, mountainous interior. The southern city Sanyas many beaches range from popular, 22kmlong Sanya Bay to crescent Yalong Bay and its quiet luxury hotels. Outside Sanya, the hilly hiking trails of Yanoda Rainforest Cultural Tourism Zone pass over suspension bridges and by waterfalls.