找出错处并翻译各句
1.They are putting up the scaffolding.

2.You used to go swimming when you were at

college,usedn't you?
usedn't能否换为didn't

3.They fould that a stream had formed in the field.

rdsghfrtjhdrtj您好：
针对问题，一一作答如下：

1.They are putting up with the scaffolding.
他们双手被绑着(直接意思是:他们忍受着脚手架)．

2.可以的
你在大学时，经常去游泳，是吗？

3.不太符合英文的表达方式，有两种理解，先给翻译，再给英文：
　他们发现流水汇成田地．
They found that a field was formed by streams.

　他们发现流水流入了田地间．
　They found that a field was filled with streams.

以上是个人的一些想法，如果需要更多私下联系,希望可以帮到您