advise 建议(动词)

　　"I advise you to buy a good dictionary."

　　advice 建议(不可数名词) 所以要用 some advice 或 a piece of advice.

　　"Let me give you some advice." "She gave me a very useful piece of advice: to buy a good dictionary."

　　很多人不喜欢不请自来的建议和意见，所以为了避免表错情给人以多事的印象，你可以用以下说法：

　　"You could always..." 你其实可以...

　　"Have you considered..." 你考虑过...

　　"Perhaps we could..." 也许我们可以...

　　"Do you think it's a good idea to..." 你觉得...好不好呢？