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f 以-ie结尾的动词,变-ie为-y, 再加-ing。这样的动词包括:
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die 死亡 → dying lie 躺;撒谎 → lying
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tie 捆绑 → tying vie 竞争 → vying
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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,变现在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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cancel 取消 → cancel(l)ing dial 拨号 → dial(l)ing
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equal 等同 → equal(l)ing label 加标签 → label(l)ing
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marvel 惊讶→ marvel(l)ing model 模仿 → model(l)ing
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program 编程 → program(m)ing quarrel 争吵 → quarrel(l)ing
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rival 竞争 → rival(l)ing travel 旅行 → travel(l)ing
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worship 崇拜 → worship(p)ing
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h 有些以s结尾的动词,变现在分词时,s可以双写,也可以不双写。这样的动词包括:
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bias 使有偏见 → bias(s)ing bus 乘公交车 → bus(s)ing
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focus 聚焦 → focus(s)ing nonplus 困惑 → nonplus(s)ing
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9.5.3 动词的过去式和过去分词形式
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大部分动词的过去式和过去分词形式完全相同。
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a 规则变化
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A. 一般情况下,在动词词尾直接加-ed。如:
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broaden 开阔 → broadened develop 发展 → developed
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enjoy 享受 → enjoyed obey 遵守 → obeyed
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prompt 推动 → prompted respect 尊敬 → respected
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watch 观察 → watched wish 希望 → wished
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B. 以字母e结尾的动词,直接加-d。
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believe 相信 → believed complete 完成 →completed
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judge 判断 → judged love 爱 → loved
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place 放置 → placed refuse 拒绝 → refused
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