高中英语必修二：Unit+1+Welcome+to+the+unit+.ppt

Welcome to the unitUnit1 Quiz: what is the most beautiful thing one can experience? The most beautiful thing one can experience is mysteries. They are truly the basis of all arts and sciences. Albert Einstein What can you see in the video?Is it a UFO? Brainstorming:What other unexplained things do you know about Leonardo Da Vinci painted the Mona Lisa on a piece of pine wood (松树) in the year 1506. pyramids one of the seven wonders of the world tombs (坟墓) for ancient Egyptian kings The Bermuda Triangle Pair workDo the four pictures have something in common? If so, what is it?Can scientists explain these phenomena? 3.How do you feel about them? Example: They are mysterious because no satisfactory answers have been offered to explain them so far. Though these mysteries have puzzled people for a long time, they still show great interest in them. People feel puzzled by the mysteries … Example: UFO stands for Unidentified Flying Objects, that is, objects, apparently moving in the sky, which we cannot identify. There are lots of reports about UFOs. Some say they are aliens visiting us in their spacecraft, and some say they are military test aircraft, while others say they do not actually exist. Since we have never seen one with our own eyes and there is no definite scientific explanation for it, we are not certain whether UFOs really exist, but we believe everything will be clear in the future. What do the letters UFO stand for？Unidentified flying objects.Are they really from another planet? Do you believe in UFOs? What might be the most acceptable explanation for UFOs?Aliens from space.Military test aircraft.Some UFOs are alien, some are test aircraft.UFOs are evidence of human space travel.UFOs are neither alien nor test aircraft.UFOs don’t exist. The chances of seeing a UFO are greater for those people who live in small towns or in the country and are outside late at night..UFOs come in all shapes and sizes. Some ar