Unit5Reading2课件牛津上海版英语八年级上册.pptx

25Amazing thingsEncyclopaediasReading (2) Before you readA0 Think,discuss and answerWhat are these?Is a printed encyclopedia a useful reference book(参考书)? Britannica Before you readA1 Look at the pictures,think and answerWhat’s the difference?Is the encyclopedia May got for children or for adults?Easy wordsvividillustrationsIs there any more evidence? While you readB1 Read“dinosaurs” and find more evidenceDINOSAURSMany dinosaurs were harmless. They were as gentle as sheep and ate plants. Others were harmful. They were fiercer than tigers and ate meat.Dinosaurs all died out suddenly.Nobody knows why.We know about the lives of dinosaurs from the skeletons, eggs and footprints they left behind. (See Earth History)Dinosaurs lived on the Earth over sixty million years ago. This was a long time before people existed. Dinosaurs lived everywhere. Some were as small as chickens. Others were as big as ten elephants. Some dinosaurs even had wings and could parison & contrast help visualize the subjectsHow large?draw attentionraise interestIn an encyclopedia for adults, what will we read about sizes? The smallest dinosaurs like saltopuses were only two feet (60 centimetres) tall, while the largest ones like sauroposeidons could reach the length of 100 feet (30 metres) and the height of 40 feet (13 metres) While you readB1 Read“dinosaurs” and find more evidenceDINOSAURSMany dinosaurs were harmless. They were as gentle as sheep and ate plants. Others were harmful. They were fiercer than tigers and ate meat.Dinosaurs all died out suddenly.Nobody knows why.We know about the lives of dinosaurs from the skeletons, eggs and footprints they left behind. (See Earth History)Dinosaurs lived on the Earth over sixty million years ago. This was a long time before people existed. Dinosaurs lived everywhere. Some were as small as chickens. Others were as big as ten elephants. Some dinosaurs even had wings and could fly.Are there any other sentences like this?comparison & contrast While you