题目内容
5.We should brush our teethtwice(two) a day.分析 翻译:我们应该一天刷两次牙.
解答 答案:twice.本题考查的是频率的表达方法.two 是基数词,表示"二;twice 为频率副词表示"两次";这里指一天刷牙两次;twice a day一天两次,故答案为twice.
点评 此题考查如何回答表频率的数词.一定要记住,回答表频率的数词,一定要用诸如once,twice,three times等表次数的表达去完成.注意不要和基数词和序数词相混.
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