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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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1705074726
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:
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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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1705074750
cancel 取消 → cancel(l)ed dial 拨号 → dial(l)ed
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1705074752
equal 等同 → equal(l)ed label 加标签 → label(l)ed
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1705074754
marvel 惊讶 → marvel(l)ed model 模仿 → model(l)ed
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program 编程 → program(m)ed quarrel 争吵 → quarrel(l)ed
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rival 竞争 → rival(l)ed travel 旅行 → travel(l)ed
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worship 崇拜 → worship(p)ed
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H. 有些以s结尾的动词,变过去式和过去分词时,s可以双写,也可以不双写。这样的动词包括:
1705074763
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bias 使有偏见 → bias(s)ed bus 乘公交车 → bus(s)ed
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