—Howoftendoyouhelpyourmotherwiththehousework?—.(一周一次)

Question

— How often do you help your mother with the housework?
— ____________.(一周一次)

Answer 1

【分析】once a week“一周一次”。句意：——你多久帮妈妈做一次家务？——一周一次。

【点评】一次为once，二次为twice，三次及三次以上用“基数词+times”。