摘要
i has 还是have:have和has的用法是靠主语人称来决定的,不是时态。过去完成用had done,现在完成用 have done,将来完成用will have done or would have done,遇到第三人称单数或不可数名词要把have改成has

i has 还是have:have和has的用法是靠主语人称来决定的,不是时态。过去完成用had done,现在完成用 have done,将来完成用will have done or would have done,遇到第三人称单数或不可数名词要把have改成has
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