's可以表示is 或was或has吗?
下面's分别表示is;has;is;was对吗?
It's the best book he's written, but that's not saying much (=none of his books are very good) .这是他写的最好的书了,但这说明不了什么。
We were meant to have gone away this week, but Debbie's ill so we couldn't go.
这周我们本该走了,但是戴比病了,所以我们走不了了。