isn't

英 [ˈɪznt]

美 [ˈɪznt]

is not 的常用口语形式

Collins.5

柯林斯词典

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。
But my world isn't your world, more's the pity.
可惜的是，我们是两个世界的人。
'Isn't this marvelous?' she cooed.
“这是不是太不可思议了？”她低声说。
It's a devil of a tricky problem, isn't it?
这是个非常棘手的问题，不是吗？
I'm sure you've got it wrong. Kate isn't like that
我敢保证你弄错了，凯特不是那个样子的。
Mummy is so nasty to me when Daddy isn't here.
爸爸不在这儿时，妈妈对我很凶。
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。
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。
Isn't dinner ready? I'm famished.
饭好了吗？我都饿坏了。
What is it then? Something's up, isn't it?
那是怎么回事呢？出问题了，是吗？