问题描述：
about 形容词
i have learned about five hundred chinese words.我认为这句话是 s:i .v :have learned o:about five hundred chinese words.这样对吗,可是about 好像又没有形容词功能,只有介词和副词功能?
i have learned about five hundred chinese words.我认为这句话是 s:i .v :have learned o:about five hundred chinese words.这样对吗,可是about 好像又没有形容词功能,只有介词和副词功能?
问题解答：
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