牛津译林版M2unit1welcome to the unit 课件（共15张）

1、unexplained adj.无法解释的. explain v.解释 explain sth. to sb. explain to sb. sth. explanation n.解释 2、The world we live in is full of things that cannot be explained even by today's science. A spaceship from another planet? A satellite? A weather balloon? Can’t tell? That’s why it is called a UFO! Look at the pictures from the book and think about the questions. What’s that? 3、That's why it is called UFO. (1)That /this /it is why... That /this /it表示原因，why 表示引导表语从句，从句表示结果。 e.g. We spent a whole day waiting for the dog, that is why we had no time to clean the room. (2)That/this /it is because ...... That/this /it表示结果；because 引导表语从句，从句表示原因。 e.g. I won't go out today. This is because I ’m not feeling good. What do the letters UFO stand for？ Unidentified flying objects. Yetis You might run into a Yeti in the Himalayas, or just see a few tracks, if you are lucky! What do Yetis look like? Half-man and half-beast Strong, hair