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 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。
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。
My bank balance isn't very large.
我的银行存款余额不多了。
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？
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。
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？
But my world isn't your world, more's the pity.
可惜的是，我们是两个世界的人。
What is it then? Something's up, isn't it?
那是怎么回事呢？出问题了，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。
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。