Unit4 Then and now Students worksheet l Read and finish. （试一试，用动词的过去式完成第一架飞机的介绍）l 注意：小组4人合作讨论完成，可以查阅动词过去式哦！A hundred years ago, there no planes. Then Orville Wright and his brother Wilbur the first plane.The Wright brothers in the USA. They bicycles first.The brothers birds. They watched them flying in the sky. They to fly like the birds.They a plane. They it Flyer 1.On the 17th of December 1903, Wright climbed into the plane. The plane in the sky. . Not many people this first flight. Only four men and a boy saw it. The plane fly very far: only 36 metres. It fly very high: only 3 metres. It fly for very long: only for 12 seconds. But it the first plane! Homework(家作): Then and now