题目内容
18.He brushes his teethtwice(two ) a day.分析 他一天刷两次牙.
解答 答案:twice.
根据He brushes his teeth--(two ) a day.可知他一天刷两次牙.句子中twice a day表示一天两次,这里表示次数应该用two的副词形式:twice.故填twice.
点评 考查单词填空.准确的翻译句意及分析句子结构、时态、固定搭配等是关键,然后再用合适的形式完成句子.
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