题目内容
10．It is a good habit to brush your teeth at leasttwice （两次） a day．分析 每天刷牙至少两次是一个好习惯．
解答 答案：twice 根据题干It is a good habit to brush your teeth at least____ （两次） a day．可知句意为：每天刷牙至少两次是一个好习惯．次数+单位时间，表示频率．twice，两次，副词．故填：twice．
点评 本题主要考查翻译填空，首先要根据所给句子，看空白处所缺的单词是什么．单词确定后，再根据人称，时态，短语，句型，语态等，确定单词的适当形式．本题主要考查twice，两次，副词．
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