摘要：被动语态的适用范围 ①当我们不知道谁是动作的执行者.或者没有必要指出谁是动作的执行者时.这时不用by短语. This jacket is made of cotton. 这件上衣是棉料的. ②为了强调动作的承受者时 Visitors are requested not to touch the exhibits. 要求参观者不可触摸展品. ③出于策略.委婉.礼貌等不提出动作的执行者 You are said to be active recently. 据说你最近很活跃. 常用于如下句型: It's not known that- --不得而知 It's said that- 据说-- It's reported that- 据报道-- It's not decided that-尚未决定 It's believed that- 据认为-- It's announced that-据宣布--
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将下面被动语态的句子改为主动语态
He will be sent to the USA to study by us.
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查看习题详情和答案>>将下面被动语态的句子改为主动语态
Li Ming was praised by the teacher yesterday.
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查看习题详情和答案>>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．
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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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