1.名词，“建议，劝告，提议，意见，咨询等”，基本含义是提供建议时，是不可数名词：
Let me give you a piece of advice.
让我给你一个忠告。
despise advice 藐视忠告
honor advice 尊重意见
He gave me some very sound advice.
他给了我一些非常合理的忠告。
I think you need some heavy-duty advice.
我想你需要一些有分量的意见。
He took me aside to give me some advice.
他把我拉到一旁，给我出主意。
The advice I received was often contradictory.
我所得到的建议常常是相互矛盾的。
She won't accept advice from anyone.
她不会接受任何人的忠告。
She won't listen to my advice so she'll just have to learn the hard way.
她不肯听我的忠告，所以只好吃了苦头才知道厉害
She was gratified to find that they had followed her advice.
她看到他们听从了自己的建议，感到很欣慰。
I told her what I thought, but she didn't take my advice on board.
我把我的想法告诉了她，可她没有听取我的建议。
It's not your place to give advice.
还轮不到你来做指导。
They give advice for people with HIV and AIDS.
他们向艾滋病病毒携带者和艾滋病患者提供咨询。
2.名词，“消息，报告（道），行情，通知，话语”是可数名词：
Advices from China show that there will no war.
来自中国的消息说将不会发生战争。
Children are usually brought up to follow parents' advices.
小孩子通常都被教导要听父母的话。
《外研社英语同义词辨析词典》
Your good advices were still ringing in my ear long after you said them.
你的忠告久久地回响在我的耳边。《汉英大词典》
The kind advices are often unpleasant to the ear.
好言常常不入耳。《汉英大词典》
They want of fresh advices from Europe.
他们缺少来欧洲的新消息。
3. 、作为表示建议的名词, advice可接that引起的表语从句或同位语从句；或其动词advise后接宾语从句；这时从句中的谓语动词须用现在时虚拟式（be型虚拟语气）,即用动词原形或should 动词原形（英式英语）。
I advised him to give up smoking.=
My advice is that he (should) give up smoking.
我建议他戒烟。
They advise that a passport （should）be carried with you at all times.
他们建议护照要随时带在身边。
It is strongly advised that you take out insurance.
奉劝你务必办理保险。
Please could you advise me what I should do?
能不能请您就我该做什么给点建议呢？
其他用法：
You are advised to pre-book.
敬请预约。
I'd advise you not to tell him.
我劝你别告诉他。
I advised him to leave at once.
我劝他马上离开。
We were advised to seek legal advice.
有人劝我们找律师咨询。
We've been advised not to risk travelling in these conditions.
我们受到忠告，在这种条件下不要冒险出行。
Dentists advise you to have your teeth checked every six months.
牙医建议大家每六个月检查一次牙齿。
Police are advising people to stay at home.
警方告诫民众要留在家里。
Police are advising fans without tickets to stay away.
警察正在告诫没有票的球迷不要前来。
I'd advise buying your tickets well in advance if you want to travel in August.
要是想在八月份去旅行，我建议及早购票。
