1. Unit 4　Then and now
六年级

2. Part B 第四课时

3. Let’s check
Listen and number.

4. cycling ice-skating badminton
Cross out the words you didn’t hear.
gym dinning hall grass
cycling ice-skating badminton

5. Let’s wrap it up Changes are all around us. Talk about
the changes below.
Chen Jie was short.
Now she is 1.5 metres tall.

6. It was an egg.
Now …

7. It was raining.
Now …

8. In summer the tree was green.
Now…

9. There was a building before.
Now…

10. The cat was on the chair.
Now…

11. Chen Jie was short.
Now she is 1.5 metres tall.

12. 吃生肉
Cavemen often ate raw meat. They
didn’t cook their food.

13. Now there are many things to help
you cook.

14. In 2050, there will be house robots.
They will cook ,clean and wash the dishes.
洗盘子

15. Oh, cavemen didn’t cook their meat?
It’s OK. They didn’t do the dishes either.

16. There were many trees, and there were
many clean rivers.

17. Now , there are more and more buildings.

18. We should help the earth now, so birds will have homes and the forests will be healthy and green again.

19. Look ! How beautiful the world was! Oh! What will the birds do?
Don’t worry. People will help them.

20. Before humans lived on the earth, whales
already lived in the sea.

21. Now, there are not many whales.

22. If we change now, whales and humans
will have a bright future.(有一个美好的未来)

23. Heal the world.
拯救世界
Make it a better place!

24. 你们要学习思考，然后再来写作。
—— 布瓦罗