新概念3英语逐句精讲: 第55课来自地球的问候

2016-09-05 18:14:45来源:网络

  9.A planet would have to be a very long way from it to be capable of supporting life.

  那么一颗行星为了维持生命就要离开的它的恒星非常远。

  语言点:句子结构分析:would have to be是虚拟语气结构。

  10.Alternatively, if the star were small, the life-supporting planet would have to have a close orbit round it and also provide the perfect conditions for life forms to develop.

  反之,如果恒星很小,维持生命的行星就要在离恒星很近的轨道上运行,而且要有极好的条件才能使生命得以发展。

  语言点:句子结构分析:if引导虚拟语气的句子,交代相关的先决条件。

  11.But how would we find such a planet?

  但是,我们如何才能找到这样一颗行星呢?

  语言点:句子结构分析:这个特殊疑问句中的such a相当于one such。

  12.At present, there is no telescope in existence that is capable of detecting the presence of life.

  现在,没有一台现存的望远镜可以发现生命的存在。

  语言点:句子结构分析:that引导定语从句。

  13.The development of such a telescope will be one of the great astronomical projects of the twenty-first century.

  而开发这样一台望远镜将会是21世纪天文学的一个重要的研究课题。

  语言点:sth.will be one of the great projects of的意思是“某事将成为…的重要研究课题之一。”

  14.It is impossible to look for life on another planet using earth-based telescopes.

  使用放置在地球上的望远镜是无法观察到其他行星的生命的。

  语言点:句子结构分析:it is impossible to do这个结构已成为一个较为固定的it作形式主语的表达方式,通常放在句首。

  15.Our own warm atmosphere and the heat generated by the telescope would make it impossible to detect objects as small as planets.

  地球周围温暖的大气层和望远镜散出的热量使得我们根本不可能找到比行星更小的物体。

  16.Even a telescope in orbit round the earth, like the very successful Hubble telescope, would not be suitable because of the dust particles iron solar system.

  即使是一台放置在围绕地球的轨道上的望远镜—如非常成功的哈勃望远镜—也因为太阳系中的尘埃微粒而无法胜任。

  17.A telescope would have to be as far away as the planet Jupiter to look for life in outer space, because the dust becomes thinner the further we travel towards the outer edges of our own solar system.

  望远镜要放置在木星那样遥远的行星上才有可能在外层空间搜寻生命。因为我们越是接近太阳系的边缘,尘埃就越稀薄。

  语言点:句子结构分析:as…as引导比较状语,变为否定时只需变化为not as/so…as即可。

  18.Once we detected a planet, we would have to find a way of blotting out the light from its star, so that we would be able to 'see' the planet properly and analyze its atmosphere.

  一旦我们找到这样一颗行星,我们就要想办法将它的恒星射过来的光线遮暗,这样我们就能彻底“看见”这颗行星,并分析它的大气层。

  语言点:句子结构分析:so that引导结果状语从句。

  19.In the first instance, we would be looking for plant life, rather than 'little green men'.

  首先我们要寻找植物,而不是那种“小绿人”。

  语言点1:句子结构分析:rather than的意思是“而不是”,在这句话中相当于instead of。
语言点2:这句话中的“小绿人”指代传说中的外星人。

  20.The life forms most likely to develop on a planet would be bacteria.

  行星上最容易生存下来的是细菌。

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