欢迎访问贝贝英语网！
When can we use the passive voice?
1.不知道动作的执行者是谁，或没有必要指出动
作的执行者时。
My bike was stolen last night.
昨晚我的自行车被偷了。
Letters are collected at eight every morning.
信件每天早晨八点收取。
2.为了强调或突出动作的承受者时。
The desk was made by Master Wang.这张课桌是王师傅做的。
The bag was taken away by his sister.那个包是她姐姐提走的。
1. We clean the classroom every day.
The classroom is cleaned by us every day.
2.They make_ shoes in that factory.
Shoes are made by them in that factory.
3. People plant trees in Spring.
Trees are planted by people in Spring.
4. His mother usually washes dishes after dinner. Dishes are usually washed by his mother after dinner.
5.More and more people speak Chinese in the world Chinese is spoken by more and more people in the world.
