UFO-研究生英语课件.ppt
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1、A UFO A UFO in My Yardin My Yard A UFO is technically an unidentified flying object.Background information Sightings of this unusual aerial phenomena date back to ancient times,but UFOs became widely discussed only after the first widely publicized U.S.sighting in 1947.Many thousands of such observa
2、tions have since been reported worldwide.At least 90 percent of UFO sightings can be identified as conventional objects,although time-consuming investigations are often necessary for such identification.accelerate:Vt Vi 加速;催促,促进;增加(数量)eg:accelerated cement 快凝水泥 He decided to accelerate his advertisi
3、ng.他决定增加广告的数量。a substance used to accelerate a fire.用以加大火势的物质 frantic:1)Highly excited with strong emotion or frustration;frenzied:发狂似的:由于强烈的情感或巨大的挫折而高度兴奋的;发狂的:frantic with worry.焦急得发狂 2)Characterized by rapid and disordered or nervous activity:狂暴的:有急速并纷乱或紧张的行为特点的:made a frantic last-minute search f
4、or the lost key.对丢失的钥匙做最后的紧张万分的寻找 illuminate:1)T o provide or brighten with light.照明,照亮:给予光亮或用光使发亮 eg:The streets were illuminated for the celebration.街道灯火通明以示庆祝。2)To make understandable;clarify:解释,说明:使某物能被理解;说清楚:eg:“Cleverly made attacks can often serve to illuminate important differences between c
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