He help his mother wash the clothes last weekend.里的help为什么不用加s

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He help his mother wash the clothes last weekend.里的help为什么不用加s

He help his mother wash the clothes last weekend.里的help为什么不用加s
He help his mother wash the clothes last weekend.里的help为什么不用加s

He help his mother wash the clothes last weekend.里的help为什么不用加s
你的句子是错误的,因为后面时间状语是last weekend,表示过去,要用过去时,要加ed的,He helped his mother wash the clothes last weekend ,主语是单数时只有一般现在时的时候谓语才加s

应该是helped . last weedend 是一般过去式的时间状语,所有要用help的过去式。原句出错了,可能是打印的笔误。