1. Dishes are often washed by my mother .

$+$ Hiện tại đơn : O -> S + am / is / are + PII + nc + by + time.

2. A cake is being made by her.

$+$ Hiện tại tiếp diễn : O -> S + am / is / are + being + PII + nc + by + time.

3. He car has been washed for hours .

$+$ HTHT : O -> S + have/has + been + PII + nc + by + time.

4. That  washing machine was bought by my mother in 2010.

$+$ QK : O -> S + was/ were + PII + nc + by + time.

5. The grass was being cut by her yesterday morning .

$+$ QKTD : O -> S +was/ were + being + PII + nc + by + time.

6. Lunch had been cooked by her before leaving.

$+$ QKHT : O -> S + had been + PII + nc + by + time.

7. The dogs will be fed by me .

$+$ Will be : O -> S + will be + PII + nc + by + time .

8. Their homework is going to be completed this evening.

$+$ Going to : O -> S + am/is/are + going to be + PII + nc + by + time.