notice可以用作动词和名词，不管是哪个词性的用法都有需要注意的地方。下面进行归纳。
1.notice做及物动词和不及物动词，表示“注意到，觉察到”。后面可以跟名词、代词、从句、复合结构。比如：Did you notice anything else peculiar? 你注意到有什么特别的吗?
None had noticed her agitation. 没有人注意到她的激动。I noticed that most academics were writing papers during the summer.我注意到大部分学者那个暑期都在撰写论文。
Luckily, I'd noticed where you left the car.幸好，我注意了你停车的地点。Did you notice whether I locked the door?你注意到我锁门了吗？
Did you notice him pause? 你注意到他停顿了吗?I noticed Fred's car parked outside. 我注意到弗雷德的车停在外面。
2.notice用作名词，表示“注意，理会”，比如：It will not have escaped your notice that there have been some major changes in the company. 你肯定会注意到公司已经发生了一些重大的变化。
Take no notice of what he says. 别理会他说的话。Don't take any notice of what you read in the papers. 别在意你在报上看到的东西。Take no notice of what he says. 别理会他说的话。
3.notice做名词，表示“通知，通告，告示”。比如：There was a notice on the board saying the class had been cancelled. 布告牌上有一则通知说这堂课取消了。
Notices in the waiting room requested that you neither smoke nor spit.等候室的告示要求人们不要吸烟也不要随地吐痰。
A few guest houses had "No Vacancies" notices in their windows.几家旅社在他们的窗户上贴出了“客满”的告示。
4.要点：
1）动词notice多指偶然看到了某种情况，虽然有时这种情况也重要。look多指“看”的具体行为和过程。Observe主要强调细心，冷静的观察与审视。而常见动词see则着重于“看到了”的结果。
2）notice同see、hear一样用主动语态时可接宾语加无to的不定式或-ing形式，这也是考点之一。但用被动语态时notice之后不能像see，hear一样用动词不定式结构。比如：
I noticed them come in.我注意到他们进来了。I didn't notice him leaving.我没看到他离开。At this moment she noticed Tom coming in.正在这时，她注意到汤姆进来了。
3）名词notice作“注意，察觉”讲时为不可数，作“通知，布告”讲时为可数名词。比如：
The plan is not worth our notice.这个计划不值得我们注意。His writings brought him into public notice.他的作品使他引起了公众的注意。It escaped his notice.他没有注意到。
They sent me a notice.他们给我发了一个通知。Just inside the door a number of notices were pinned up.就在门里面，钉着几张布告。
