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 fantastic? Just look at that!
这是不是棒极了？看看那个！
Mummy is so nasty to me when Daddy isn't here.
爸爸不在这儿时，妈妈对我很凶。
'Isn't this marvelous?' she cooed.
“这是不是太不可思议了？”她低声说。
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？
'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。
She's quite pretty, isn't she?
她长得挺美，不是吗？
I'm afraid German beer isn't for me.
恐怕我喝不了德国啤酒。
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。
Isn't that enough for you?
那对你来说不够吗？
It's a devil of a tricky problem, isn't it?
这是个非常棘手的问题，不是吗？