(共7张PPT)
Unit 2
Language points
1. Do you take your own bag when shopping
and not ask for a plastic bag
你买东西的时候拿着自己的袋子而不要塑料袋吗？
句中的when shopping实际上是when you are shopping的省略，其中when是连词。
① When eating bread, you should break
the bread into small sizes.
吃面包的时候，你应该把面包撕成小块。
② When asking for something, say "Please".
向别人询问事情，说“请。”
注意：由when等引导的时间状语从句，当主句的主语与
从句的主语相同且从句谓语动词含有be动词时，
常省略从句的主语和be动词。
2. And what do you do with the bottles when
they are empty
你是怎么处理空瓶子的？
do with
① The teacher didn't know what to do
with the naughty pupil．
教师不知道该怎样对待那个顽皮的学生。
对付；处理
② What should I do with this old computer
这台旧电脑怎么处理？
3. Do you divide the waste into things to
recycle and things to throw away
你把垃圾分为可回收和需丢弃的吗？
divide...into...
① The book is divided into six sections.
这本书分为六部分。
把……分成……(divide强调把整体划分为若干部分)
② Lucy divided the cake into/in four.
露西把这块蛋糕分成了四块。
当divide 后只有数词, 而无“部分”、“组”、“队” 等词语时, 也可与介词in连用。
throw away
① When are you going to throw away
those old magazines
你打算什么时候扔掉那些旧杂志？
扔掉、丢弃
② I threw those trousers away years ago.
多年前我就把那些裤子扔掉了。
4. Although it takes energy to change things
into something else, it is better than throwing
things away or burning them.
虽然把一种东西变成另一种东西也会消耗能源，但是也比把它们扔掉或烧掉好。
change...into...
① You cannot change iron into gold.
你无法把铁变成金子。
把……变成……
② With a wave of her magic wand, she
changed the frog into a handsome prince.
她魔杖一挥，把青蛙变成了英俊的王子。
5. We cannot hope for rapid change, but let's
take these simple steps today...
我们不能期待立竿见影的变化, 但是今天就让我们从这些简单的措施开始吧……
take steps
① We need to take some steps to reduce
pollution.
我们需要采取一些措施来减少污染。
采取措施
② We should take steps to prevent war.
我们应当采取措施制止战争。(共7张PPT)
Unit 1
Language points
1. Pollution is a danger to our health.
污染危及我们的健康。
danger n.
① Police said the man was a danger to
the public.
警方说该名男子对公众是个危险因素。
危险; 危险物，威胁
② I think he enjoys the dangers of rock
climbing.
我想他喜欢攀岩过程中的种种危险。
③ Is there any danger of infection, doctor
医生，有感染的危险吗？
④ Carlos is in danger of losing his job.
in danger
out of danger
be a danger to...
be in danger of doing...
① I had a sudden feeling that Peter was in danger.
我突然感觉到彼得有危险。
② Grandma was very ill two days ago, but now
she is out of danger.
祖母两天前还病的很厉害，现在已经脱离危险了。
处在危险中
脱离危险
③ Smoking is a danger to health.
我突然感觉到彼得有危险。
卡洛斯有丢掉工作的危险。
对……造成威胁；对……有害
有（不好事情发生的）危险
2. It's no use talking about things we can't do.
谈论我们不能做的事情是没有用的。
It's no use doing sth.
① It's no use complaining.
抱怨没有用。
做某事没有用处
② It's no use arguing with him.
和他争辩是没有用的。
3. Such as...
比如说……？
such as
① - There are lots of things you could do.
- Such as...
—有很多你们能做的事。
—比如说……？
表示举例说明
② English is spoken in many countries,
such as Australia and Canada.
许多国家都讲英语，例如澳大利亚和加拿大。
4. At a green school, every class collects
waste which can be recycled or used again.
在绿色学校里，每个班都收集可循环再生或再利用的废弃物。
waste n.
① The goal is to recycle 98 percent of
household waste.
目标是使98%的家庭废物得到再利用。
废弃物、浪费
② It's a waste of time to wait/waiting any
longer.
再等下去是白费时间。
be a waste of time to do/doing sth.
……是浪费时间的
waste还可作动词，意为“浪费”。
常用于下列结构中：
① waste sth on (doing) sth.
在某事上浪费
② waste time (in) doing sth.
浪费时间做某事
不要浪费时间玩电脑游戏。
Don't waste time (in) playing computer games.
Don't waste time on computer games.
Don't waste time on playing computer games.
