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](/uploads/image/z/13457726-62-6.jpg?t=%E6%94%B9%E6%AD%A3When+we+saw+Maria+this+afternoon%2Cshe+has+already+had+a+hair+cutWhen+we+saw+Maria+this+afternoon%2Cshe+has+already+had+a+hair+cut.%E9%94%99%E5%9C%A8%E5%93%AA%E6%80%8E%E4%B9%88%E6%94%B9Before+you+arrived+%2CI+have+prepared+anything+you+need.%E9%94%99%E5%9C%A8%E5%93%AA%E6%80%8E%E4%B9%88%E6%94%B9)
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。