大多數“主-動-賓”結構的主動句都可以轉換為被動句。

(1)將原來的賓語變為主語，并將原來的主動態動詞詞組變為被動態動詞詞組。

This factory produces machine tools.

→Machine tools are produced in this factory.

The found a wallet in the car.

→A wallet was found in the car.

They are repairingthe bridge.

→The bridge is being repaired.

They have repaired the bridge.

→The bridge has been repaired.

They often make fun of her.

→She is often made fun of.

He took great care of his books.

→His books were taken great care of.

→Great care was taken of his books.

(2)如果原句帶有情態動詞或半助動詞，在變為被動句時，助動詞不變，隨后的主動詞變為被動態。

They should do this right now.

→ This should bedone right now.

They may be interviewing the applicants at the moment.

→The applicants maybe being interviewed at the moment.

They must have finished their work.

→Their work must have been finished

He is likely tolet you down.

→You are likely tobe let down.

(3)當主動句變被動句，如果要強調施動者，可將原句主語置于by- 詞組中表達出來。

A boy found this wallet in the street.

→This wallet was found in the street by a boy.

(4)當主動句是一個“主-動-賓-賓”結構時，可以有兩種形式。

Father gave me a toy yesterday.

→I was given a toy yesterday.

→A toy was given to me yesterday.

(5)當主動句是一個“主-動-賓-補”結構時，可將原來的賓語變為被動句的主語，原來的賓語補語變為被動句里的主語補語。

They named the boy Tom.

→The boy was named Tom.

We painted the wall pink.

→The wall was painted pink.

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