what he wants to tell us isn,t known.

2个回答

  • 很高兴为您

    这不是很正常吗?

    what he wants to tell us 与when you will come back两个都是主语从句,谓语肯定用单数

    is是单数,does也是单数.

    不要把does看成复数了,这是谓语动词的第三人称单数.

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