Unit 2 Saving the earth. Topic 1 Pollution has causes too many problems.Section A课件（16张）

课件16张PPT。Unit 2 Saving the EarthTopic 1 Pollution has causes too many problems.
section Ahave a picnicKangkang, Jane, Maria and Michael are planning a picnic for Sunday.
They will go to the West Hill.What can you see there?We can see bees and butterflies dancing.beebutterflyThe flowers and grass have gone! Oh, my goodness. What a mess!Look! There are several chemical factories pouring waste water into the stream.= have disappeared.1c Read 1a and complete the sentences in the table. beautiful placelots of flowers and grassfresh and the water was cleanbees and butterflies dancingThe flowers and grassso dirtyterriblechemical factorieswaste waterEverythingLook at the pictures and make up conversations similar to the example with your partner.Example:
A: There were lots of flowers and grass
when I visited the village last year.
B: But now the flowers and grass have
gone.
A: What has happened here?
B: The villagers have destroyed them.lake/fish
factory/pollutehill/ trees
farmers/cut downvillage/flowers and grass
villagers/destroy4 Work in groups and talk about pollution in a place you are familiar with. The following sentences may help you.
…ago, it was…
Now, … have/ has gone.
What has happened?
Everything has changed.
Oh, my goodness!summaryWe learn:1. Express exclamation:
What a mess! What a shame! Oh, my goodness! 2. Know the differences between Simple Past
and Present Perfect.
It was a beautiful place.
Everything has changed.We can:1. Some words:
bee, butterfly, mess, shame, several, pour, waste,
destroy, pollute,pollution, goodness ,villager
2. Some phrases:
see sb. doing sth. pour…into... cut down
3. Some sentences:
There be ...doing... Homework
1. Read 1a.
2. Write a passage according to Part 4.
3. Finish Section A in your workbook.
4. Preview Section B.