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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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1705074746
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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cancel 取消 → cancel(l)ed dial 拨号 → dial(l)ed
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equal 等同 → equal(l)ed label 加标签 → label(l)ed
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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:
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bias 使有偏见 → bias(s)ed bus 乘公交车 → bus(s)ed
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focus 聚焦 → focus(s)ed nonplus 困惑 → nonplus(s)ed
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b 不规则变化
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A. 过去式、过去分词皆为动词原形
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动词原形 基本词义 过去式 过去分词
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beset 困扰;围绕;围攻 beset beset
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bet 打赌 bet bet
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broadcast 广播 broadcast broadcast
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burst 爆裂;迸发 burst burst
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bust 打碎 bust (或busted) bust (或busted)
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cast 扔 cast cast
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cost 花费 cost cost
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cut 切割 cut cut
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