have been

I have been in Shanghai five times since 2002 .

从2002年起，我已经来过上海五次了。

I will leave my trace . The world will know I have been here .

我将留下我的踪迹，让世人知道我曾来过。

There have been some problems but basically it 's a good system .

虽然出现过一些问题，但这基本上仍不失为一个好系统。

His family have been a very positive influence on him .

他的家庭对他有十分良好的影响。

There have been many changes in recent years .

近几年发生了许多变化。

They have been working on the perfection of the new model .

他们一直在努力完善新型号。

None of this would have been possible without their help .

如果没有他们的协助，这事没有一样能办成。

What books have been set for the English course ?

英语课布置要用哪些书？

The plans have been under discussion for a year now .

这些计划至今已讨论一年了。

No new SARS cases have been reported in the region .

该区没有新增非典型肺炎病例。

The two companies have been fused into a single organization .

两家公司合并成一个机构。

The resources at our disposal could have been better utilized .

我们所掌握的资源本来可以利用得更好，获得更高的效益。

For the purposes of this study , the three groups have been combined .

为了这项研究工作，三个小组业已合并。

There have been large cuts in government funding for scientific research .

政府提供的科研资金已大幅度削减。

There have been many complaints from members of the public .

现在已有大量的民众投诉。

The last couple of years have been difficult .

最近的几年一直是困难重重。

Costs have been reduced by 20 % over the past year .

过去一年，各项费用已经减少了20%。

It should have been a simple matter to check .

检查核对本来应该是件简单的事情。

They have been sitting on my application for a month now .

他们压着我的申请不办有一个月了。

How many students have been entered for the exam ?

有多少学生报名参加考试？

Human error may have been a contributing factor .

人为的失误可能是一个起作用的因素。

Many of your suggestions have been incorporated in the plan .

你的很多建议已纳入计划中。

The countries have been at peace for more than a century .

这些国家和平共处已有一个多世纪。

This level of success would have been unimaginable just last year .

取得这样的成就，这在仅仅一年前都是不敢想象的。

Companies have been forced into a greater orientation to the market .

各公司不得不转变，更加面向市场。

This just proves what I have been saying for some time .

这恰好证实了我长久以来所说的。

The wheels of change have been set in motion .

变革的车轮已经开始运转。

They would have been married forty years come this June .

到今年六月他们结婚就有四十年了。

Staff have been retrained to use the new technology .

为使员工学会运用新技术，对他们进行了再培训。

For convenience , the two groups have been treated as one in this report .

为方便起见，这两个组在本报告中被视为一组。