日语
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意大利语
阿拉伯语
葡萄牙语
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一. 何时使用被动语态
1. 不知道谁是动作的执行者或没有必要
如：Paper is made from wood.
The house is quite old. It was built in 1950.
He was wounded in the fight.
2. 需要强调动作的承受者时
如：Calwlator can\'t be used in the maths exam.
1. 不知道谁是动作的执行者或没有必要
如：Paper is made from wood.
The house is quite old. It was built in 1950.
He was wounded in the fight.
2. 需要强调动作的承受者时
如：Calwlator can\'t be used in the maths exam.
