观察下列句子中的画线部分，归纳出各种时态的被动语态的构成。

1．Rice is grown in the south of China．

___________________________

2．The computer is being used now．

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3．The work has been finished．

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4．The thief was caught yesterday．

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5．The girl was being operated on in the hospital．

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用-ing形式的被动语态合并句子

I am laughed at in the public．I don’t like it．

＝I don’t like ________．