isn't

英 [ˈɪznt]

美 [ˈɪznt]

is not 的常用口语形式

Collins.5

柯林斯词典

Merely because you believe a thing is right, it isn't automatically so
事情不会仅仅因为你相信它是对的，就会必然如此。
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's past the appointed time. Maybe he isn't coming.
约定的时间都过了，别是他不来了吧？
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。
What is it then? Something's up, isn't it?
那是怎么回事呢？出问题了，是吗？
Awfully hot, isn't it?
非常热，是不是？
Isn't it fantastic? Just look at that!
这是不是棒极了？看看那个！
He just isn't in your league.
他和你根本不是同类型的人。
It's a love, isn't it?
真可爱啊，是不是？
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。