Yes, no, it isn't

不───no;不是───no

We've tried this method for no one knows how many times.───这种方法我们已不知试了多少次.

I have no adequate preparation.───我没有充分的准备.

I am in no mood for joking.───我没闲心开玩笑.

He's denied having an affair with secretary but of course there's no smoke without fire.───他不承认他和他的秘书有染,但是无风不起浪啊.

When money falls in value, there is no encouragement to save.───货币贬值时, 就无法鼓励人们储蓄.

No one could emerge from that avalanche alive, unless one believed that man could rise from the dead.───没人能从那次雪崩中活着出来, 除非相信人能死而复生.

As the jewel was in the rough state , he had no idea what size it would be when cut.───这块宝石未经琢磨, 他不知道加工后有多大.

No one asked your opinion, so butt out.───没有人征求你的意见, 不要插嘴.

There is no end to learning.

There is no escape [flying] from fate.

Black will take no other hue.

No, I just like to watch.

A gloved cat catches no mice.