在过去

But most of Iraq's geologists and engineers have left the country in the past six years, either because they could not tolerate the insecurity or because the new establishment has chased them away as Baathists formerly in thrall to Saddam Hussein.

然而，伊拉克的多数地质学家和工程师在过去六年陆续离开，可能因为他们无法容忍这里的危险局势，或者因为新政府将他们视为过去效命Saddam Hussein的复兴党人而驱逐他们。

For the past four years, they've been threatening me, making demands for trial, deposing my parents, sisters, friends, and myself twice – the first time for nine hours, the second for seven.

我心里着实没底。在过去的整整4年里，他们不断地威胁我、恐吓我，强迫我去法庭受审。他们还逼迫我和我的家人朋友暂停工作，去接受他们的盘问——第一次他们拉我过去，盘问了整整了9个小时，第二次则长达7个小时。

But there are challenges, too. The projected 2020 levels are derived from a model that uses past emissions (last measured in 1994) and extrapolates them given expected growth. These projections provide a business-as-usual trajectory of greenhouse gas emissions.

但挑战也依然存在。2020年减排放计划的估值建立在过去（1994年水平）的排放水平和经济增长量基础上，这种设计只能以过去的经济增长标准计算温室气体排放值。

My though still cling to the moldering past,the days are dark and dreary.

我的思想仍沉浸在过去黑暗烦恼的过去。

Over the past few days, Northern Ireland has been reliving the dark violent days of how life used to be.

在过去的几天里，北爱尔兰重新体验了过去那种黑色的恐怖日子。

In both cases, their growth to date owes much to multiple expansion: India's doubling in three years; China's trebling in two years.

迄今为止，两个市场的增长都主要得益于市盈率的扩张：印度的市盈率过去三年翻了一番，而中国在过去两年增长了两倍。

Why did you come back home instead of staying at school yesterday evening?—The teacher told us that we externs didn't need to stay at school in the evening.

例句中所指的事是发生在过去的真实情况，所以只能用实义动词need的过去否定式来表示。

Real estate enterprises, in the past relied on banks to fund the rolling development of the golden years gone.

房地产企业，在过去依赖于银行的资金滚动发展的黄金时代过去了。

The dangers have been becoming apparent for a generation. Now the facts have started to speak: 11 of the past 14 years have been the warmest on record, the Arctic ice-cap is melting and last year's inflamed oil and food prices provide a foretaste of future havoc.

在过去的一代人时间中，这种危险已经变得清晰可见，事实已经开口说话：过去14年的11年中，地球的气温屡创新高，北极冰层开始消融，而去年高涨的油价与粮价已经描绘出未来经济世界的可怕图景。

The past perfect is an action in the past that occurred before a separate action in the past.

过去完成式就是在过去某个时间发生的事情之前所发生的事情。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。