1.the father of democracy 民主之父。介词of后接名词，故答案为democracy

2.the little known Cleisthenes. 不知名的克里斯提尼。修饰名词用形容词，故答案为known

3.He first introduced democracy to the Greek city states 他最先向希腊城邦引进了民主。句子须有动词，缺动词，故答案为introduced

4.after he gained political power 在他获得政治权力后。修饰名词power用形容词，故答案为political

5.he began to develop a series of major reforms 他开始进行一系列重大改革。考过去式，故答案为began

6.he began to develop a series of major reforms 他开始进行一系列重大改革。begin to do开始做某事，用动词原形，故答案为develop

7.he began to develop a series of major reforms, leading to the formation of Athenian Democracy. 他开始进行一系列重大改革，这导致了雅典民主的形成。分词短语作补充说明成分，主动用ing，故答案为leading

8.the formation of Athenian Democracy 雅典民主的形成，故答案为formation

9.He made all free men living in Athens and Attica citizens, giving them the right to vote 他让所有生活在雅典和阿提卡的市民都获得了自由，给予他们投票权。分词短语作补充说明成分，主动用ing，故答案为giving

10.He also established a council. 他还成立了一个议事会。修饰动词用副词，故答案为also

11.over the age of thirty 30岁以上。the后面接名词，故答案为age

12.encouraging public involvement in the government . 鼓励了公众参与政府事务。the后面接名词，故答案为government

13.may not be the same as the many democracies around the world today 可能与当今世界各地的许多民主不同。词组the same as和…一样，故答案为same

14.there is no doubt that this was the first step. 这无疑是向民主迈出的第一步。词组there is no doubt that无疑。there be和no后面一般多接名词，故答案为doubt