he often helps his mother
他经常帮助他的母亲
以上为机器翻译结果，长、整句建议使用 人工翻译 。
He often helps his mother do housework.
他经常帮他妈妈做家务。
youdao
He often helps his mother with housework.
他经常帮助妈妈做家务。
He often helps his mother wash the dishes.
他常帮助他的妈妈洗洗餐具。
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