Question

i do not know if she had come yesterday这句话对吗？有没有语法错误？

Answer 1

口语中语法基本正确，书面中需要改进。Had come中的come是过去分词，表示过去完成时态，强调过去某一时间前已经完成的动作，但come非持续性动作，不太合适，可以改为been here即“I do not know if (whether 更恰当) she had been here yesterday (or not) 我不知道她昨天是否来过（且已经离开）”

Answer 2

有，没有过去的过去的意思，不应该用过去完成时。应该是
i don't know if she has come yesterday.

Answer 3

你好，很高兴为你解答
这句话是错的
i do not know if she came yesterday
谢谢
希望采纳

Answer 4

有
had come -> came
过去某一具体时间（yesterday）发生的事情，用一般过去时

Answer 5

改为I do not know if she come yesterday.
从句的时间状语是yesterday,谓语应该用过去式，单纯表示动作发生在过去。

希望有帮助！