Because the water of the pond got dirty."got dirty"是指什么?此句‘got’什么意思

问题描述:

Because the water of the pond got dirty."got dirty"是指什么?此句‘got’什么意思
能否换成Because the water of the pond was getting dirty.“was getting dirty”又是是指什么?两句有什么不同?

was getting dirty正在变脏(过去进行时)
got dirty就是已经变脏了(过去完成时)
get在英语中有大约280多种用法
所以.get的用法是various的