求一个句子的漂亮说法。简单但要地道！

I have been there twice; the first time is for...while the second is

这样表述不对，你的句子有语病。首先“去过那里两次”是现在完成时的，你写的是过去时。应该改为I have been there twice。后面的应改为I concentrated on ......at the first time, and I ......at the last time。因为the first time 是时间状语，前面加介词at。
（准确答案如下：
I have gone to there twice.The first time i was focused on...the second time was...
回答者： 499768199 - 助理 三级 9-12 15:27）错了竟然还叫准确答案？！
have gone to是去了但还没回来，根据这里的意思应该是回来了。there是副词，前面不能加to。The first time i was focused on...这句里的错误和楼主的一样。the second time was... 这句中的主语是“第二次”，主语应该是“我”。
所以正确答案是I have been there twice. I concentrated on ......at the first time, and I ......at the last time.

I have been to there twice
have been to 表示曾经去过什么地方，比直接用过去式要准确

另外我觉得那个而用while 来表示更确切些
the first time I have focused on...while the second time
希望可以帮到你

I have been there twice. I concentrated on ......at the first time, and I ......at the last time.

准确答案如下：
I have gone to ther