外研版九年級英語上冊《Language in use》Save our world PPT下載，共34頁。
學習目標
1.To summarize and consolidate the rules of word building.
2.To know how to protect the environment.
3.To practice word-building: compounds, derivatives, conversion
Language practice
Reuse means “use again”.
Though pollution is heavy now, I don’t think it’s hopeless.
Learning to learn
Sometimes if you know the meaning of the parts of a word, you can work out the meaning of the whole word.
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 _________.
Work in pairs. Look at the pictures and answer the questions.
What kinds of things can be recycled?
paper, plastic
How can these things be reused?
Many paper and plastic things can be used more than one time. Or we can change these things into decorations made by us.
How does this help the environment?
We don’t need to cut down more trees to make paper if we reuse papers.
Have you ever recycled or used things that can be recycled? How?
I ever recycled to use paper cup, I just use them to make some small decorations such as pen container.
Language points
work out解決；計算；產生結果；設計出
eg：The plan worked out badly.
計劃實施得很不成功。
See if you can work out this problem.
看你能不能解出這道難題。
go dark 變暗
這里的go為系動詞。英語系動詞的功能主要是把表語和主語聯系在一起，說明主語的屬性、特征或狀態。系動詞不能在句中獨立作謂語，必須和后面的表語一起構成句子的謂語。
考點1 :
某些含有變化意義的動態系動詞如get, become, grow, turn等的進行時態可與形容詞的比較級連用，表示漸進過程，其意思是“越來越……”。
eg：He is growing taller and taller.
他長得越來越高了。
Our life is getting better and better.
我們的生活越來越好了。
考點2 :
后接過去分詞可構成系表結構。
eg：John got wounded while playing football last Saturday.
約翰上周六踢足球時受了傷。
考點3 :
get :“變得”，在口語中用得很多。
become :“變成，成為(好壞情況均可)”。后接形容詞、名詞、過去分詞作表語。
go :“變得(某種由好到壞的情況)”，可表示顏色的變化或語態的變化。
turn :“變成”，強調與原來不同的、新的變化，如變質、變色等。
grow :“逐漸變得……”，強調其變化過程.
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