Unit 6,In a nature park,Introduce,Are there any trees,Words,river rv(r) 作名词，意为“河，江,eg: Imagine trying to consume the entire river. 想象一下饮下整条河的水,小练习： There is a _（河）in the forest,river,Words,mountain mantn 作名词，意为“高山，山岳,常用例句： What is the highest mountain? 最高的山是什么山,小练习： There is a _（高山）in the country,mountain,Words,tree tri: 作名词，意为“树,常用例句： There are lots of trees in the forest. 在这个森林里有许多树,小练习： There are two _（树）in the picture,trees,Translations,Zhang Peng: The nature park
