为什么“swim”加了“ing”要复写“m”?
4个回答
语法上规定:如果单词以辅音字母结尾,并且前面只有一个元音字母,则变为现在分词时要双写最后一个字母~
因"m"的前面只有一个元音字母"i",所以要双写m~
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