That’s changed since I was here.That’s changed since Iwas here.这个句子中,'s可以改成was么?为什么？
问题描述：
That’s changed since I was here.
That’s changed since Iwas here.
这个句子中,'s可以改成was么?
为什么？
答
该句的‘s是has的缩写,而非was的缩写.