What's the first stage of a negation according to the man?

根据那个人的说法，否定的第一阶段是什么？

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Having completed the first stage, you can move on to step 2.

第一阶段完成后，你就可以接着进行第2步了。

《牛津词典》

The first stage in research is data collection.

研究工作的第一步是收集资料。

《牛津词典》

The only passenger on that first stage to travel all the way through to San Francisco was a newspaper reporter named Waterman Ormsby.

VOA: special.2010.04.26

Now what's interesting is in societies where marriages are arranged this is often the first stage of a love relationship.

有趣的是,在婚姻包办的社会里,这初始阶段的爱情。

耶鲁公开课 - 心理学导论课程节选

So, first impressions matter hugely when dealing with people because it sets the stage for how we interpret everything else.

在与人相处中，第一印象非常重要,因为它制约了我们对后来信息的解读。

耶鲁公开课 - 心理学导论课程节选

The decision on Thursday is likely to be merely the first stage before the first aircraft begins commercial flight in around 2005.

BBC: Development of the A3xx would be expensive

He is also successful graphic designer about to stage his first exhibition in Paris.

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Theatre and opera director Sir Jonathan Miller is to stage his first play in the UK for five years.

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