题目内容
7.根据句意,用所给词的适当形式完成句子.It's a good habit to brush your teethtwice(two) a day.
分析 一天两次刷牙是一个好习惯.
解答 答案:twice
结合语境及所给词two可推知一天两次刷牙是一个好习惯.two为基数词意为"两个…"其对应的表达次数的词为twice意为"两次",twice a day 意为"一天两次",故答案为twice
点评 本题考查用所给单词的适当形式填空,首先要根据语境明确句意,然后再根据相关语法对所给单词在形式上做出正确的变化.
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