isn't

英 [ˈɪznt]

美 [ˈɪznt]

is not 的常用口语形式

Collins.5

柯林斯词典

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？
Isn't dinner ready? I'm famished.
饭好了吗？我都饿坏了。
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 a devil of a tricky problem, isn't it?
这是个非常棘手的问题，不是吗？
My bank balance isn't very large.
我的银行存款余额不多了。
There! Isn't that your umbrella?
喏，这不就是你的那把雨伞？
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。
But my world isn't your world, more's the pity.
可惜的是，我们是两个世界的人。
He just isn't in your league.
他和你根本不是同类型的人。
I suspect he isn't altogether unhappy about my absence
我猜想他对我的缺席并没有感到很不高兴。