是不可數(shù)名詞。advice的后面不能加s,當(dāng)表示“一條建議”用要用a piece of advice,“一些建議”用some advice。

advice用法
一、表示“建議”、“勸告”、“忠告”時(shí),是不可數(shù)名詞,當(dāng)表示一條或幾條建議,要用some,much,piece,bit等詞修飾。如:
Here are two pieces of advice. 這是兩條建議。
Let me give you a bit of advice. 讓我給你一點(diǎn)忠告吧。
二、表示按照某人的意見做某事,要用介詞 on 或 by。如:
We did the work by her advice. 我們按她的意見做此工作。
Claire went to Paris on Sarah’s advice. 克萊爾聽取薩拉的忠告去了巴黎。
三、表示提出建議或忠告,一般用動(dòng)詞 give;表示向某人請教或征求意見,一般用動(dòng)詞 ask (for);表示接受意見或勸告,一般用動(dòng)詞take, follow, accept 等。如:
The old often give good advice to the young. 老年人常常對年輕人提出金玉良言。
You should ask for the teacher’s advice. /You should ask the teacher for advice. 你應(yīng)該去征求老師的意見。
四、advice的動(dòng)詞形式是advise,常見搭配有:advise sb.to do sth,advise doing sth,advise that sb.should do sth。如:
He advised waiting till the proper time.他建議等到適當(dāng)時(shí)機(jī)才行動(dòng)。
My teacher advises me to leave now.老師建議我現(xiàn)在就離開。
We advise measures(should)be taken to stop pollution at once.我們建議立即采取措施以阻止污染。