nature 自然，自然界
sky 天，天空
hill 小山，丘陵
mountain （高）山，山脉
sea 海，海洋
lake 湖，湖泊
river 河，江，川
island 岛，岛屿
tree 树，树木
plant 植物
grass 草
flower 花
forest 森林，林区
fire 火，大火，火灾

① An area with many trees.
② The blue space above us.
③ The water we can see at the beach.
④ The light and heat produced by burning.
⑤ An area of land that is surrounded by water.
⑥ A very high area of land. Like a really big hill!

① 
An area with many trees.
有许多树的区域。
area 地区，区域
答案：forest

② 
The blue space above us.
我们上方的蓝色空间。
space 空间，太空
above 在……上面
答案：sky

③ 
The water we can see at the beach.
我们可以在海滩上看到的水。
The water [that] we can see at the beach.
beach 海滩，沙滩
答案：sea

④ 
The light and heat produced by burning.
燃烧产生的光和热。
heat 名词，热，热度，高温
produce 动词，生产，制造；产生，引起
burn 动词，燃烧，烧着，烧坏，烧伤
答案：fire

⑤ 
An area of land that is surrounded by water.
被水包围的一块土地。
an area of land 一块土地，一片土地
be surrounded by 被……包围，被……环绕
surround 动词，环绕，围绕，包围
答案：island

⑥ 
A very high area of land. Like a really big hill!
一块很高的地。就像一座真正的大山！
答案：mountain