concerned 与 concerningconcerned about his health he went to the doctor for advice 为什么不是concerning?

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concerned与concerningconcernedabouthishealthhewenttothedoctorforadvice为什么不是concerning?concerned与conce

concerned 与 concerningconcerned about his health he went to the doctor for advice 为什么不是concerning?
concerned 与 concerning
concerned about his health he went to the doctor for advice 为什么不是concerning?

concerned 与 concerningconcerned about his health he went to the doctor for advice 为什么不是concerning?
be concerned about是固定搭配,你这里写的concerned about…应该是省略了主语和系动词的形式.而concerning是动词的现在分词,并不能和about搭配使用,因此只能用concerned.