isn't

英 [ˈɪznt]

美 [ˈɪznt]

is not 的常用口语形式

Collins.5

柯林斯词典

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？
What is it then? Something's up, isn't it?
那是怎么回事呢？出问题了，是吗？
Isn't dinner ready? I'm famished.
饭好了吗？我都饿坏了。
Isn't it about time that you pulled your finger out?
现在到了你该赶紧动起来的时候了吧？
Awfully hot, isn't it?
非常热，是不是？
It's a love, isn't it?
真可爱啊，是不是？
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。
'Isn't this marvelous?' she cooed.
“这是不是太不可思议了？”她低声说。
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。
This isn't highfalutin art-about-art. It's marvellous and adventurous stuff.
这不是一件纯粹为艺术而艺术的华而不实的东西，而是进行了大胆创新的非凡作品。