语态，是英语语法的基础，是表示主语和谓语之间关系的。语态分为主动语态和被动语态。当主语是动作的执行者时，称为主动语态；如果主语为动作之承受者，称为被动语态。在实际应用中，被动语态在表现形式方面更有优势些，它使语言更加的婉转和生动，所以也更为正式些，所以大家一定要格外重视它的作用，必须熟练掌握如何将主动语态转化为被动语态。其实只要能清楚地了解主动句的结构，清楚句子的各个成分，就可以很轻松地进行转换啦！首先要把主动句中的宾语转换为被动语态的主语。如：The sweeper sweeps the path everyday.The path the sweeper sweeps everyday.第二，把动词变为被动式结构 be+动词的过去分词，由于 be 动词的时态要按照原来主动语态的时态保持不变，而且动词的人称数要随着新的主语（原主动句中的宾语）而变，所以这一步会较容易出错，一定要认真仔细哦！The path the sweeper sweeps everyday. The path the sweeper is swept everyday.第三，原主动语态句子中的主语放在 by 后面并把其变成宾格形式，指明做事的人或物。但如果没有必要提及的话，可以省略。The path the sweeper is swept everyday. The path is swept by the sweeper everyday.第四，句子中其余成分像定语、状语保持不变。The path is swept by the sweeper everyday. The path is swept by the sweeper everyday.转变时要格外留意：在被动语态句子中必定要有一个 be 动词，只是可能以不同形式出现而已，如下例：AoJi Language Training School will send Lily to Harvard. Lily will be sent to Harvard by AoJi Language Training School.We are going to visit the library this afternoon. The library is going to be visited this afternoon.They have built the Amusement Park since I was born.The Amusement Park has been built since I was born.