It's a good idea to plan ahead.

提前做计划是个好主意。

I really like the idea of helping people. [+ of]

我非常赞同帮助他人的提议。

She told me she'd had a brilliant idea.

她告诉我她有个好主意。

Some of his ideas about democracy are entirely his own. [+ about]

他关于民主的一些观点完全是他自己的创见。

...the idea that reading too many books ruins your eyes.

读书过多损害眼睛的看法

My idea of physical perfection is to be very slender.

在我看来，要拥有完美身材就要非常苗条。

This table will give you some idea of how levels of ability can be measured. [+ of]

这张表格会让你大致了解能力水平可以怎样评估。

Could you give us an idea of the range of complaints you've been receiving?.

你能跟我们大致讲一下今年收到的投诉的范围吗？

If you cannot remember the exact date give a rough idea of when it was. [+ of]

如果你记不清确切日期，就说一下大致的时间吧。

By the end of the week you will have a clear idea of what your eating habits are.

到这周末你便会清楚自己的饮食习惯了。

No one has any real idea how much the company will make next year.

没人真的知道该公司明年会赚多少钱。

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。

The idea is to encourage people to get to know their neighbours.

其目的是促使人们结识邻居。

He sent for a number of books he admired with the idea of re-reading them. [+ of]

他订购了一些自己喜欢的书，打算重新再读一遍。

I had to postpone ideas of a career and stay at home.

我不得不暂缓就业打算，呆在家里。

'Is she coming by coach?' — 'Well I've no idea.'

“她坐长途汽车来吗?”—“哦，我不知道。”

We haven't the faintest idea where he is.

我们根本不知道他在哪里。

It isn't too difficult once you get the idea.

你一旦弄懂了，就不太难了。

You're beginning to get the idea.

你开始明白了。

We are both so happy, you have no idea.

你肯定想象不出来，我们俩都这么幸福。

You have no idea how depressed it made me.

你都想象不出这事令我多么沮丧。