He knows his name.怎样变否定句)为什么?

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He knows his name.怎样变否定句)为什么?

He knows his name.怎样变否定句)为什么?
He knows his name.怎样变否定句)为什么?

He knows his name.怎样变否定句)为什么?
he doesn't know his name
否定句是要对动词进行否定,这里是knows,要借助助动词does,变否定加not

He doesn't know his name.他不知道他的名字。

He doesn't know his name.
有谓语动词know变否定,助动词提前
he 是第三人称单数 谓语动词为does

he doesn't know his name
因为在这个句子中know是动词,所以要用助动词,he 是第三人称,所以用does ,否定doesn't
助动词后面要接动词原形,所以knows 要去掉s

He doesn't know his name.因为是三单线所以用does not,然后knows变成原形know