ideal和idea的区别：中文含义不同、词性不同、用法不同。ideal可作名词和形容词，含义为“完美的”、“最合适的”、“想象的”、“看似完美的思想”、“完美的人”；idea只作名词，含义为“主意”、“印象”、“感觉”、“目标”。

ideal可作名词和形容词，译为理想的;最合适的;想象的;不切实际的；理想;看似完美的思想(或标准);完美的人(或事物)。

例句：This beach is ideal for children.

这个海滩是孩子的理想去处。

In an ideal world there would be no poverty and disease.

在理想的世界里将没有贫穷和疾病。

She found it hard to live up to his high ideals.

她觉得很难达到他的高标准要求。

It's my ideal of what a family home should be.

这是我心目中完美的家庭住宅。

She decided that I was the ideal person to take over the job...

她认定我是接手这份工作的最佳人选。

We do not live in an ideal world...

我们并非生活在完美的世界里。

In an ideal world we would be recycling and reusing everything.

我们要是能回收并再利用所有的东西就再理想不过了。

Any attempt to construct an ideal society is foredoomed to failure.

任何构建理想社会的努力都注定要失败。

idea作为名词，译为主意;想法;概念;构思;印象;意见;看法;信念;感觉;目标。

例句：It would be a good idea to call before we leave.

我们出发之前打个电话是个好主意。

The brochure should give you a good idea of the hotel.

这本小册子详细介绍这家旅馆。

He has some very strange ideas about education.

他对教育有些非常奇怪的看法。

What gave you the idea that he'd be here?

是什么让你想到他会来这里？

What's the idea of the game?It's a good idea to plan ahead...

提前做计划是个好主意。

这个游戏的目的是什么？

I had an idea that he joined the army later, but I may be wrong.

我猜他后来参军了，但也可能我猜得不对。