twice weeklytwo times a week
once a week twice a week three times a week four times a week once a mouth up to three times a mouth most of students none of students three or four times a week
twice a week 如He goes home twice a week .他周回两次家。加油！不明白再问！如果帮到你，请采纳，谢谢！
twice a week
twiceaweek.twice易为两次，一次用once.一般大于三次才用times
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