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