人教英语必修2重庆专用Unit4SectionⅢ课件.ppt

Section Ⅲ　Learning about Language Using Language;;Ⅰ.Read the passage and tell the following statements true(T)or false(F)． 1.Dinosaurs came into being long before humans.(　　) 答案：T 2.We have found the eggs of 25 species in China.(　　) 答案：T 3.The scientists can tell the species of dinosaur from the way the bones were joined together.(　　) 答案：F;Ⅱ.Scan the text and choose best answer according to the text. 1．The main idea of the passage is________. A．how dinosaurs were discovered B．about dinosaurs’ extinction C．about the history of dinosaurs D．about animals’ dying out 答案：B;2.From the first paragraph we know that_______. A．dinosaurs have recently disappeared B．a number of dinosaurs used to live in Canada C．dinosaurs’ existence is long before humans came into being D．dinosaurs can’t climb trees as other animals do 答案：C;3．The possible reasons for the disappearance of dinosaurs are the following except that________. A．they lived on the earth tens of millions of years ago B．it came after an unexpected incident C．the earth got too hot for the dinosaurs to live on D．nobody knows for sure the reason 答案：A;4.According to a UN report，we know that_______. A．some 844 animals and plants have disappeared in the last 500 years B．the dodo，a very friendly animal can live longer on the earth C．dinosaurs can not only run but also climb trees D．too much dust in the air killed dinosaurs 答案：A;5.From the whole passage we can learn that_____. A．if we protect the earth well，dinosaurs can’t die out quickly B．the eggs of twenty-five species will be found in China C．scientists found a surprising result of the brain of the dinosaurs D．the next part of the passage will be about dodo’s disappearance 答案：D;重点难点探究;②The People’s Republic of China came into being on October lst,1949. 中华人民共和国成立于1949年10月1日。 ③There are many reasons for this problem to come into being. 导致这一问题产生的原因有很多。 自我探究 come into being＝come into existence意为形成；开始存在；产生； come into being无被动语态，不用于进行时态。;牛刀小试 Scientists have many theories about how