She thinks walk to work is good for her health.这句话哪里有错?为什么?请说明知识点.

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She thinks walk to work is good for her health.这句话哪里有错?为什么?请说明知识点.

She thinks walk to work is good for her health.这句话哪里有错?为什么?请说明知识点.
She thinks walk to work is good for her health.这句话哪里有错?为什么?
请说明知识点.

She thinks walk to work is good for her health.这句话哪里有错?为什么?请说明知识点.
walk-> walking 动名词作主语( 因为WALK动词原形,不能作主语)

walk变成waiking,因为walk是动词,is是be动词,他们两个不能同时出现。be good for表示对.....有好处,只能把walk变成现在进行时。