adj.多丘陵的；多小山的；多坡的；峭峻的

◆记忆方法一：
词根词缀记忆法：hilly a 多山的（hill山）,“y”结尾表形容词，加在名词后变成形容词

mountain/mountainous/hill/hilly/volcano/valley/steep/basin/plain/fountain
记忆：
1. mount [ maunt ] n. 山 vi. 爬上, 增长 vt. 爬上 We mounted the Mount Emei last summer holiday.我们去年暑假爬上了峨嵋山。
2. mountain [ 5mauntin] M 联想山形，mountain, n. 山, 山脉 The huge waves came at us like mountains .巨浪象山一样扑来。
3. mountainous [ 5mauntinEs] adj. 多山的, 山一般的 My hometown lies in a mountainous area.我的家乡位于山区。
4. hill [ hil ] n. 小山, 丘陵, 斜坡, 山岗 We often compete to climb the west hill.我们经常比赛爬西山。
5. hilly [ 5hili ] adj. 多小山的 Our county is hilly.我国多山。
6. volcano [ vCl5keinEu ] n. 火山 The volcano is a threat to people living nearby.火山对住在附近的人来说是个威胁。
7. valley [`vAli] val-ley val, 空的；valley n. 山谷 Have you heard of the Red River Valley?你听说过《红河谷》吗？
8. steep [ sti:p ] adj. 陡峭的, 险峻的 The hillside is so steep that no one can climb to the top.山腰险峻，没有人能爬到山顶。
9. basin [ 5beisn ] n. 盆, 盆地 Sichuan Basin is rich in crops.四川盆地富产农作物。
10. plain [ plein ] n. 平原, 草原 adj. 简单的, 明白的, 平常的 How I wish to have a look at a plain in Inner Mongolia!我多希望看看内蒙古的大草原！
11. fountain [ 5fauntin ] f. 联想水不识好歹喷的样子，fountain, n. 泉水, 喷泉 A music fountain has just been completed in the Culture Square.一座音乐喷泉刚刚在文化广场建成。
另类阅读：
My house lies in a hilly village at the edge of the Sichuan basin. Now people’s life has improved a lot. A music fountain has been set up there. The villagers are not content to stay at home. They travel outside to experience great mountains, deep valleys, and vast plains.