rule/ruler/principle/govern/governor/government
记忆：
1. rule [ ru:l ]　n. 规则, 统治, 章程　vt. 规定, 统治 The king ruled the kingdom with cruel rules. 国王用残酷的制度统治着这个王国。
2. ruler [ 5ru:lE ]　n. 统治者, 管理者, 尺, 直尺 The farmers rose up to struggle against the merciless ruler. 农民起义反抗那个冷酷的统治者。
3. principle [ 5prinsEpl ] A basic truth, law n. 法则, 原则, 原理 We can’t abuse the principles of democracy. 我们不能滥用民主的原则。
4. govern [ 5^QvEn]　v. 统治, 支配, 管理 Chance usually governs the outcome of the game. 偶然性常常支配着事情的结果。
5. governor [ 5^QvEnE ]　n. 统治者, 管理者, 地方长官 Dong Jianhua is the chief governor of Hongkong Special Administrative District. 董建华是香港特别行政区的行政长官。
6. government　[ 5^QvEn ] 政府 The government should be by the people, of the people and for the people. 政府应该是民治，民有和民享的政府。
另类阅读：
Some rulers are called governors who stand for the government and carry out the rules to govern the whole area.