- 所属频道：外研版九年级英语上册
- 更新时间：2022-07-20
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外研版九年级英语上册《Repeat these three words daily:reduce reuse and recycle》Save our world PPT免费课件，共26页。
新课导入
Language practice
Reuse means “use again”.
Though pollution is heavy now, I don’t think it’s hopeless.
新课讲解
Make new words. Join the parts of words in Box A with the words in Box B. You need to use some of the parts more than once.
We shouldn’t use disposable food box or disposable chopsticks.
These are some bowls and spoons made of china.
Someone threw an empty bottle in a river.
There are three rubbish bins for recycling, so please divide the waste before you throw things into them.
Possible answers:
It is better to use china cups and bowls because they can be used many times.
It is better to divide the waste into things to recycle and things to throw away.
It is necessary to use less plastic bags.
You should make a recycling policy for your classmates and yourself.
Language points
It is better to use china cups and bowls…
用瓷杯和瓷碗更好…… it在这里作形式主语。
作不定式的形式主语
eg：It’s not easy to get him to change his mind. 让他改变主意不容易。
作that引导的从句的形式主语
eg：It is obvious that we can’t go on like this.我们显然不能像这样继续了
作whether, when, what等引导的句子的形式主语
eg：It doesn’t matter whether you go or not. 你去不去没关系。
作动名词的形式主语
eg：It was nice seeing you. 看见你真好。
when shopping 当买东西时
when＋doing，when为连词，由于主句和从句主语相同，故可省略从句中的主语和be动词。
eg：When waiting for the train, he always plays his mobile games.
当他等火车时，他总是玩他的手机游戏。
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