he often help his mother do the housework.哪里错了

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he often help his mother do the housework.哪里错了
he often help his mother do the housework.哪里错了

he often help his mother do the housework.哪里错了
helps 用第三人称单数.至于the应该可以去掉.不过这个无所谓.关键是helps

he often helps his mother do the housework

help应该改为helps