能缩写haven't
请看例句：
.We haven't hadsnow this winter.
今年冬天这里降雪不多.
2.We haven't had much sunshine this week.
这个星期我们没有看到多少阳光.
3.I guess I haven't been retired long enough.
我想我还没有退休的足够长的时间.
4.Everyone has their own goals and dreams.Why haven't
每个人都有梦想和自己目标.为什么我没有呢?