isn't

英 [ˈɪznt]

美 [ˈɪznt]

is not 的常用口语形式

Collins.5

柯林斯词典

My bank balance isn't very large.
我的银行存款余额不多了。
I'm afraid German beer isn't for me.
恐怕我喝不了德国啤酒。
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 he just the most beautiful thing you ever saw?
他难道不是你见过的最美的事物么？
Isn't dinner ready? I'm famished.
饭好了吗？我都饿坏了。
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 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 this marvelous?' she cooed.
“这是不是太不可思议了？”她低声说。
She's quite pretty, isn't she?
她长得挺美，不是吗？
Not all is perfect, but it isn't for want of trying.
一切并非无可挑剔，但已经竭尽全力了。