1.raffle n.抽獎（lottery）

聯想記憶：raff(大量，一大堆)+le—在一大堆里抽—抽獎

例：raffle tickets抽彩券

2.ragtime n．拉格泰姆音樂（一種早期黑人爵士樂）(rhythm characterized by strong syncopation in the melody with a regularly accented accompaniment in stride-piano style)；a．滑稽的(funny)

聯想記憶：rag(破衣服)+time(時候)—黑人穿破衣服的時候跳的爵士舞

例：Scott was a preeminent ragtime composer.

3.raid n..劫掠(foray);突襲（a surprise attack）

例：The king began to raid and conquer the enemy territory.

派生詞：raider(n.襲擊者)

4.railroad n.鐵路（a permanent road having a line of rails)

詞根記憶：rail(鐵軌)+road(路)—鐵路

例：The government should lower the railroad companies' property taxes.

5.rally n．（行情、價格等）跌后復升，反彈(rebound)

例：Economists predicted that there would be a rally in stocks and bonds.

6.ranch n．大農場(large farm, esp. in U.S. or Canada, where cattle are bred)

派生詞：rancher(n．農場主)

7.rangeland n．牧場(land used or suitable for range)

聯想記憶：range(漫游)+land(土地)—牛羊可以漫游的土地—牧場

8.ransom n．贖金(a consideration paid or demanded for the release of someone or something from captivity);v.救贖(to deliver from sin or its penalty)

聯想記憶：ran(跑)+som（看作sum一筆錢）—用一筆錢跑—贖金

注意：random(a．隨意的)

例：The hijackers demanded a ransom of a million pounds.//The prisoners should be ransomed.

9.ratification n．正式批準(formal confirmation)

詞根記憶：來自ratify(v．正式批準)

例：The role 'of Congress in the ratification of treaties with sovereign nations was eventually undermined.