《Language in use》Save our world PPT課件2
Objective:
To summarize and consolidate the rules of word building
Observe
Observe the following sentences carefully. They are all from this module.
1. Reuse means“use again”.
2. Though pollution is heavy now, I don’t think it’s hopeless.
3. If the rivers are polluted, farmers can’t use the water for their crops.
4. If everyone starts to do something, the world will be saved.
5. We all need a healthy environment, but we produce waste every day, and it is harmful to our environment.
6. Do not waste things.
7. Repeat these three words daily: reduce, reuse and recycle.
8. Before you buy something new, think whether it is really necessary because maybe old one is just as good!
9. …but let’s take these simple steps today so that we will save the world for our grandsons and granddaughters tomorrow.
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1. 合成法
將兩個或兩個以上獨立且語義不同的單詞合在一起構成新詞的方法稱作合成法。
合成名詞 afternoon, sportsman, blackboard, newspaper, airplane, classmate…
合成形容詞 kind-hearted, middle-aged, hard-working…
合成副詞 however, maybe…
合成代詞 himself, everyone, nothing…
合成動詞 overlook…
2. 派生法
通過在詞根前面加前綴或在詞根后面加后綴構成一個新詞的方法稱作派生法。
dis- 不 disagree, dislike
en- 使……處在某種狀態 enable, enrich
im-, in- 不 impossible, impatient, inexpensive
inter- 在……之間 international, interconnect
mis- 錯誤的 mislead, misunderstand
non- 不，非 non-smoker, non-native
re- 再，重復 rewrite, retell
un- 不 unable, unhappy, unpopular
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Complete the sentences with the words in the box.
hopeful impossible reuse unhealthy wasteful
1. Polluted water is _________.
2. It is _________ to throw so much food away.
3. If you look after things well, you may _______ some of them later.
4. It is _________ to clean up the whole river in such a short time.
5. If we pay attention to pollution now, the future will be _________.
Complete the sentences with the correct form of the words in Activity 3.
She was ______ that her new job would make her more successful.
1. The factory ________ the river, and the fish died.
2. We often walk in the countryside. It is a(n) _______ activity for us.
3. Do not use so much water. It is very ________.
4. To keep the flowers growing, you need to _______ them once a day.
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I. 從方框中選擇適當的單詞并用其正確形式填空。
correct energy eat possible
appear help success care
1. Both of the books were ________ to her and she couldn’t decide which one to buy.
2. How ________ of John to break the cup!
3. The meat has a strange smell. I’m afraid it’s hardly _______.
4. Tom is an _________ boy and it seems that he never gets tired.
5. I’m afraid that it’s ________ for us to get there before eight.
6. The sun _________ behind the clouds and it began to rain.
7. I’m sorry to say your answer is ________. Please try again.
8. It’s not easy to become a _________ actor.
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Ⅱ.完成下列同義句。
1. It’s not polite to speak to others with your mouth full of food.
It’s _________ to speak to others with your mouth full of food.
2. The teacher asked him to write the composition again.
The teacher asked him to _________ the composition.
3. He’s not popular with some of the neighbors.
He’s _________ with some of the neighbors.
4. I hate sweet food. Especially, I don’t like eating cake.
I hate sweet food. Especially, I _________ eating cake.
5. Hamburgers, candy and ice cream aren’t healthy food.
Hamburgers, candy and ice cream are ________ food.
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Homework
1. Search for more information about pollution. Make an oral presentation to your class.
2. Finish the exercises in Learning English.
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