改正When we saw Maria this afternoon,she has already had a hair cutWhen we saw Maria this afternoon,she has already had a hair cut.错在哪怎么改Before you arrived ,I have prepared anything you need.错在哪怎么改
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改正When we saw Maria this afternoon,she has already had a hair cutWhen we saw Maria this afternoon,she has already had a hair cut.错在哪怎么改Before you arrived ,I have prepared anything you need.错在哪怎么改
改正When we saw Maria this afternoon,she has already had a hair cut
When we saw Maria this afternoon,she has already had a hair cut.错在哪怎么改
Before you arrived ,I have prepared anything you need.错在哪怎么改
改正When we saw Maria this afternoon,she has already had a hair cutWhen we saw Maria this afternoon,she has already had a hair cut.错在哪怎么改Before you arrived ,I have prepared anything you need.错在哪怎么改
When we saw Maria this afternoon,she has(had) already had a hair cut.错在哪怎么改
Before you arrived ,I have(had) prepared anything you need.错在哪怎么改
过去完成时
has---->had,过去完成时
have---->had,过去完成时
2句均是在过去某一时刻,已经发生的事情,故用过去完成时
When we saw Maria this afternoon,she (has改成had) already had (a改成her) hair cut.
Before you arrived ,I (has改成had) prepared anything you need.
把现在完成时改成过去完成时。因为是在过去的过去发生的事,所以使用过去完成时。