.,Unit 4 Then and now,人教版 六年级下册,.,Part B第四课时,.,Lets check,Listen and number.,.,Cross out the words you didnt hear.,gym dinning hall grass cycling ice-skating badminton,.,Lets wrap it up,Changes are all around us. Talk about the changes below.,Chen Jie was short. Now she is 1.5 metres tall.,.,It was an egg.,Now .,.,It was raining.,Now .,.,In summer the tree was green.,Now .,.,There was a building before.,Now .,.,The cat was on the chair.,Now .,.,Chen Jie was short.,Now she is 1.5 metres tall.,.,Cavemen often ate raw meat. They didnt cook their food.,吃生肉,.,Now there are many things to help you cook.,.,In 2050, there will be house robots. They will cook ,clean and wash the dishes.,洗盘子,.,Oh, cavemen didnt cook their meat?,Its OK. They didnt do the dishes either.,.,There were many trees, and there were many clean rivers.,.,Now , there are more and more buildings.,.,We should help the earth now, so birds will have homes and the forests will be healthy and green again.,.,Look ! How beautiful the world was! Oh! What will the birds do?,Dont worry. People will help them.,.,Before humans lived on the earth, whales already lived in the sea.,.,Now, there are not many whales.,.,If we change now, whales and humans will have a bright future.（有一个美好的未来）,.,Heal the world.,Make it a better place!,拯救世界,.,你们要学习思考，然后再来写作。 布瓦罗,