N 

neither … or既不…也不…

He answered me, but he spoke neither slowly nor clearly.

他回答了我的问题,但是他说得又快又不清楚。

never mind不要紧，不要放在心里

next door隔壁;接近

no doubt无疑地，很可能

No doubt you would like a drink.

毫无疑问你是喜欢喝一杯了。

No doubt he was just trying to help, but he‘s spoiled our work.

可能他只是想帮忙，但却把我们的工作给弄糟了。

no good不行，没有用

no less than和…一样

no longer不再

no matter how (what, when, etc.)无论

no more不再

no more than至多;同…一样不;仅仅

no sooner … than一…就

I had no sooner got back to the kitchen than the doorbell rang loud enough to wake the dead. 我刚走回厨房,门铃又响了,响得足以把死人吵醒。

no wonder难怪，不足为奇

none other than不是别的，正是

It‘s none other than Tom! We thought you were in Africa! 是汤姆!我们以为你还在非洲!

not only … but also不但…而且…

nothing but只，只不过

now and then 时而，偶尔

now that既然