初中被动语态知识点归纳与总结
初中被动语态知识点归纳与总结
一、被动语态的定义和构成
被动语态是英语中的一种语态,表示主语是动作的承受者。其构成为“be+过去分词”,其中“be”的形式根据时态不同而有所变化。例如:
- 现在时:am/is/are + 过去分词
- 过去时:was/were + 过去分词
- 现在完成时:have/has been + 过去分词
- 过去完成时:had been + 过去分词安全名言警句
二、被动语态的用法
1. 强调动作的承受者而不是执行者。
例如:
- The cake was made by my mom.(蛋糕是我妈做的。)
2. 当执行者不确定或无需明确时。
例如:
- The window was broken.(窗户破了。)
3. 当执行者已知但无需强调时。
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例如:
- The book was written by Mark Twain.(这本书是马克·吐温写的。)
4. 在科学、新闻报道等中常用被动语态。
例如:
- The new drug has been tested on animals.(这种新药已经在动物身上进行了测试。)
霸王项羽三、被动语态与主动语态的转换
1. 主动变被动:将主语改为宾语,动词变为过去分词,加上适当的助动词。
例如:
- 主动:My mom made the cake.(我妈做了蛋糕。)
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- 被动:The cake was made by my mom.(蛋糕是我妈做的。)
2. 被动变主动:将宾语改为主语,去掉助动词,将过去分词变为一般现在时。
例如:
- 被动:The cake was made by my mom.(蛋糕是我妈做的。)
- 主动:My mom makes the cake.(我妈做蛋糕。)
四、被动语态的注意事项
1. 被动语态只能用于及物动词。
小鱼吐泡泡图片例如:
- 正确:The book was read by me.(这本书被我读了。)
- 错误:I was slept last night.(昨晚我被睡觉了。)
2. 在使用被动语态时要注意主谓一致。
例如:
- 正确:The flowers were watered by him every day.(他每天都给花浇水。)
- 错误:The flowers was watered by him every day.
3. 在使用被动语态时要注意时态和语态的一致性。
例如:
- 正确:The letter has been written by her already.(这封信已经被她写了。)
- 错误:The letter was written by her already.
五、被动语态的练习题
1. 改写下列句子,使用被动语态:
- My friend invited me to his birthday party.
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- She gave me a surpri prent.
一堆堆什么填空- The teacher will mark the tests tomorrow.
2. 将下列被动语态转换为主动语态:
- The car was repaired by the mechanic.
- The letter has been nt by my sister.
- The cake will be baked by my mom.
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