人教版六年級英語下冊《Then and now》PPT下載(第4課時)，共19頁。
Warming up
Could you tell us about your change?
知識講解
I read a book. It was really interesting.
Could you tell me the story?
Cavemen often ate raw meat. They didn't cook their food.
Now there are many things to help you cook.
In 2050, there will be house robots. They will cook, clean and wash the dishes.
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.
課堂小結
Cavemen often ate raw meat. They didn't cook their food.
穴居人經常吃生肉。他們不做飯。
We should help the earth now, so birds will have homes and the forests will be healthy and green again.
我們現在應該幫助地球，這樣鳥類將有家，森林將再次健康和綠色。
Before humans lived on the earth, whales already lived in the sea.
在人類生活在地球上之前，鯨魚已經生活在海里了。
If we change now, whales and humans will have a bright future.
如果我們現在改變，鯨魚和人類將有一個光明的未來。
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關鍵詞：Then and now PPT課件免費下載，.PPT格式；
