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1、Unit 4 Then and now人教版六年级下册Part B第四课时第四课时Lets check Listen and number. Cross out the words you didnt hear. gym dinning hall grasscycling ice-skating badmintonLets 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
2、 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. Theydidnt cook their food.吃生肉Now there are many things to help you cook.In 2050, there will be house
3、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 weremany clean rivers.Now , there are more and more buildings.We should help the earth now, so birdswill have homes and the forests will be h
4、ealthy 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 humanswill 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。你们要学习思考，然后再来写作。 布瓦罗布瓦罗同学们来学校和回家的路上要注意安全同学们来学校和回家的路上要注意安全
