Unit 3 grammar 课件(北师大版必修1)
Unit 3 grammar 课件(北师大版必修1)第3页

When do we use the passive voice?

Many houses will be built here.

1. 不知道或没必要指出动作的执行者。

The song “The East is Red” was written by a poor peasant.

2. 强调动作的承受者。