neither...nor....既不....也不....

It is neither hot nor cold.天气既不热也不冷。

no doubt 无疑，很可能

The count will no doubt deal with the criminals severely.法庭必定严厉地处置这些罪犯。

no less than 不少于

No less than 800 people came.来了不下800人。

no longer 不再，已不

She no longer lives here.她已不住在这儿了。

no more 不再

Her voice is heard no more.再也听不到她的声音了。

no more than 不过，仅仅

It is no more than an empty talk.那只不过是一种空谈。

no sooner...than 一.....就......,刚.......就......

He had no sooner arrived than he fell ill.他一到达就病倒了。

not only....but also.....不仅....而且....

She is not only beautiful,but also kind.v她不仅漂亮而且善良。

nothing but 只有；只不过

Genius is nothing but labour and diligence.天才只不过是劳动和勤奋。

now and then 有时候，不时地，偶尔

I hear from her now and then.我不时收到她的信。

now that 既然，由于

Now that they have taken matters into their hand,the pace of events has quickened.他们既已着手自己来处理问题，事态的进展也就加快了。