Bị động: 

- S + can be + V3/ed 

- S + has/have to + be + V3/ed

- S + must be + V3/ed 

- S + should be + V3/ed 

- S + may be + V3/ed 

- S + might / could + have +been +V3/ed 

- S  + will be + V3/ed 

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1. Ann's office can't be used at the moment.

2. My work has to be finished now.

3. Your task must be done.

4. Poor women should be offered more help by governments.

5. Something must be done before it's too late.

6. 500$ a day may be earned by my uncle.

7. The fish might have been caught.

8. The company will be sued for wage discrimination.

9. The dress could have been washed.

10. Many flowers can't be picked.

`color{orange}{~LeAiFuRuiHuiBao~}`