isn't

英 [ˈɪznt]

美 [ˈɪznt]

is not 的常用口语形式

Collins.5

柯林斯词典

'Isn't this marvelous?' she cooed.
“这是不是太不可思议了？”她低声说。
That isn't a value judgement, it's a fact.
那不是一个价值判断，而是一个事实。
She's quite pretty, isn't she?
她长得挺美，不是吗？
Isn't that enough for you?
那对你来说不够吗？
Isn't he just the most beautiful thing you ever saw?
他难道不是你见过的最美的事物么？
This isn't the first hare-brained scheme he's had.
这已经不是他制定的第一个愚蠢方案了。
Awfully hot, isn't it?
非常热，是不是？
But my world isn't your world, more's the pity.
可惜的是，我们是两个世界的人。
My law practice isn't the most important thing in my life, you know.
你知道，我的律师事务所不是我生活里最重要的事情。
It isn't too difficult once you get the idea
你一旦弄懂了，就不太难了。