Unit 13 We're trying to save the earth! Section A (1a-2d)课件(共26张PPT，含内嵌音频) 人教版英语九年级全册

(共26张PPT)
Unit 13
We're trying to save the earth!
Section A (1a-2d)
Here are some words related to different kinds of pollution. Write them in the box below. Then add more words.
与……相关
The general idea of the conversation is about
A. health problems
B. air pollution
C. water pollution
Role-play the conversation. Then make your own conversations about the kinds of pollution in 1a.
E.g.
Mark: The river was dirty. Even the bottom of the
river was full of rubbish.
Tony: But it used to be so clean!
Mark: Yes, but people are throwing litter into the river.
Tony: Everyone in this town should play a part in cleaning it up!
知识链接 1
play a part in…的意思是“在……起作用”,相当于play a role in…。同义词组还有take part in。
注意：in为介词，后接名词、代词或动词的 ing形式。
litter 作不可数名词，意为“垃圾；废弃物”。
litter和rubbish都可指“垃圾”，用作不可数名词。
rubbish指“没用的东西(被扔或将要丢弃的无用的东西)”不可回收。
litter指“(室内或公共场所)乱扔的废物(纸屑、不要的包装纸、废瓶等)”还可回收。
Listen to the interview. Circle the kinds of pollution that Jason and Susan talk about.
Listen again and complete the sentences.
Read 2d carefully and complete the chart.
知识链接 2
There are other advantages of bike riding.
advantage的意思是“优点;有利条件”,可作可数名词，也可作不可数名词.反义词是disadvantage,意思是“缺点,不利条件”。　　
e.g.His sister has many advantages.他的姐姐有很多优点。
advantage的相关短语： take advantage of... 利用……
be/work to one’s advantage 对某人有利
e.g. I have the advantage of him in running.我在跑步方面条件比他优越。
To her advantage,her voice is very sweet.对她有利的是,她的声音非常甜美。
take，spend，pay和cost都可以表示“花费”，但用法不同。
make a difference (to…)表示(对……)产生影响或作用;
lead to的意思是“导致,引导”。　
e.g.All roads lead to Rome.条条大路通罗马。
有关difference的短语：
make no difference to对……没有影响
the difference(s) between …...之间的差异、不同之处
eg: Learning English well can make a difference to your future.学好英语会对你的前途有影响。
What caused air pollution,noise pollution and water pollution
The factories that burn coal pollute the air with a lot of black smoke.
Cars and buses that burn gases pollute the air with a lot of black smoke.
People talk on the phone loudly in public.
People build house/drive cars.
People dance with songs loudly in public.
Summary :
Can you translate the following into English
减少
代替（做某事）
骑自行车（名词）
对...有好处
外卖食品
记得要做某事
产生影响或作用
导致,引导
cut down
instead of doing sth
bike riding
be good for
take away food
remember to do sth
make a difference to
lead to