英语学习中，主动句和被动句是非常重要的语法知识点。通过主动句改写为被动句，可以更好的表达句子的主题，也可以拓展使用场景。下面是10个主动句改写为被动句的例子：
- 原句：She eats the cake. 改写为被动句：The cake is eaten by her.
- 原句：He wrote the letter. 改写为被动句：The letter was written by him.
- 原句：They will open the store. 改写为被动句：The store will be opened by them.
- 原句：The teacher is explaining the lesson. 改写为被动句：The lesson is being explained by the teacher.
- 原句：The company hired the new employee. 改写为被动句：The new employee was hired by the company.
- 原句：They are painting the house. 改写为被动句：The house is being painted by them.
- 原句：She has completed the project. 改写为被动句：The project has been completed by her.
- 原句：He is making the coffee. 改写为被动句：The coffee is being made by him.
- 原句：They have sold the car. 改写为被动句：The car has been sold by them.
- 原句：She teaches English. 改写为被动句：English is taught by her.
以上是10个主动句改写为被动句的例子，希望对大家的英语学习有所帮助。记得加强语法练习，多进行实践，才能更好的掌握语法知识点哦！
