有關passive voice

Passive voice (被動語態)

receiver(承受者/原本句子的賓語) + be + p.p + by actor(發出者/原本句子的主語)

什麼時候雖要用到被動語態
a. 當個不易說出動作的發出者既情況下, 如: someone. 又或唔知是誰做的.
My wallet was stolen (by someone). (主動: Someone stole my wallet.)
His car had already been damaged before that accident.

b. 當動作或狀態的承受者比發出者更為重要
My dog was killed by a speeding car.
(我的狗比那架車重要)

c. 當個動作發出者係人所共知, 不需要亦不重要去提及
Rice is grown in China (by farmer).

d. 當我們知道, 但不想提及這件事是誰做的
I was told that we might be able to leave early.
(主動: Someone told me that we might be able to leave early.)

注意:
不是每句句子都可以改成被動,
只有transitive verb (及物動詞) 才可以轉成被動句.

動詞由主動語態變為被動語態的步驟:

a.將原來的賓語變為主語,

b.根據新主語的情況和時態,
把BE加在verb(past participle) 前並根據原來句子改變時式

c.將原來的主語放在by 之後, someone 之類的主語可忽略.


Simple Present Tense
Active: Mark helps the boys.
Passive: The boys are helped by Mark.

Present Continuous Tense
Active: Mark is helping the boys.
Passive: The boys are being helped by Mark.

Present Perfect Tense
Active: Mark has helped the boys.
Passive: The boys have been helped by Mark.

Simple Past Tense
Active: Mark helped the boys.
Passive: The boys were helped by Mark.

Past Continuous Tense
Active: Mark was helping the boys.
Passive: The boys were being helped by Mark.

Past Perfect Tense
Active: Mark had helped the boys.
Passive: The boys had been helped by Mark.

Simple Future Tense
Active: Mark will help the boys.
Passive: The boys will be helped by Mark.

be going to
Active: Mark is going to help the boys.
Passive: The boys are going to be helped by Mark.

Future Perfect Tense
Active: Mark will have helped the boy.s
Passive: The boys will have been helped by Mark.

Passive voice 即係被動語態。

被動語態可以是現在式。

我們把主詞和受詞的位置調換，將一句主動句變成被動句。

被動語態=被動主詞+To be+過去分詞

Example

1) 主動: Miss Chan teachers us.

被動: We are taught by Miss Chan.

2) 主動: My brother cleans the bathroom once a week.

被動: The bathroom is cleaned by my brother once a week.

3) 主動: She bought a book yesterday.

被動: A book was bought by her yesterday.

4) 主動: He is eating an apple.

被動: An apple is being eaten by him.

5) 主動: Ann was drawing a picture all morning.

被動: A picture was being drawn by Ann all morning.

希望幫到你!!