isn't

英 [ˈɪznt]

美 [ˈɪznt]

is not 的常用口语形式

Collins.5

柯林斯词典

But my world isn't your world, more's the pity.
可惜的是，我们是两个世界的人。
It's a love, isn't it?
真可爱啊，是不是？
She's quite pretty, isn't she?
她长得挺美，不是吗？
'That's crazy,' I said. 'Isn't it just?' he said
“那简直是疯了，”我说。“谁说不是呢？”他说。
There! Isn't that your umbrella?
喏，这不就是你的那把雨伞？
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 he just the most beautiful thing you ever saw?
他难道不是你见过的最美的事物么？
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。
Awfully hot, isn't it?
非常热，是不是？
It's a devil of a tricky problem, isn't it?
这是个非常棘手的问题，不是吗？