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rule 统治 → ruled urge 催促 → urged
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C. 以辅音字母+y结尾的动词,变y为i,再加-ed。
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carry 携带 → carried deny 否认 → denied
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envy 妒忌 → envied reply 回答 → replied
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supply 供应 → supplied try 尝试 → tried
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vary 有差异 → varied worry 担心 → worried
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D. 单音节,且以元音字母+辅音字母结尾的动词,要双写最后的辅音字母,再加-ed (大部分和现在分词变化中的动词相同,但少量有不规则变化,如get, run, set, sit, swim等)。如:
1705074713
1705074714
ban 禁止 → banned beg 乞求 → begged
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drop 掉落 → dropped plan 计划 → planned
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rob 抢劫 → robbed scan 审视 → scanned
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stir 搅动 → stirred stop 停止 → stopped
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但以x结尾的动词除外。如:
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fix 安装 → fixed mix 混合 → mixed
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E. 重音在最后一个音节,且结尾是辅音字母的动词,要双写最后的辅音字母,再加-ed (大部分和现在分词变化中的动词相同,但少量有不规则变化,如begin, forget等)。如:
1705074727
1705074728
admit 承认 → admitted compel 强迫 → compelled
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occur 发生 → occurred omit 遗漏 → omitted
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prefer 偏爱 → preferred rebel 反叛 → rebelled
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regret 懊悔 → regretted transfer 转移 → transferred
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但以x结尾的动词除外。如:
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relax 放松 → relaxed perplex 使困惑 → perplexed
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F. 以字母c结尾的动词,加-ked。这样的动词包括:
1705074741
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bivouac 露宿 → bivouacked havoc 严重破坏 → havocked
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mimic 模仿 → mimicked panic 恐慌 → panicked
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picnic 野餐 → picnicked traffic 非法贩卖 → trafficked
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G. 以l, m, p结尾的有些动词,不论是否为单音节或者重音在最后一个音节,变过去式和过去分词时最后一个字母可以双写,也可以不双写(英国英语双写,美国英语单写)。这样的动词包括:
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