Topic 3 What can we do to protect the environment? SectionB The first period 课件21张PPT

课件21张PPT。Unit 2 Saving the Earth Topic 3 What can we do at home to protect the environment? Section B (the first period)Do a survey. 1.How do you come to school?
2.Do you throw litter around?
3.Do you use both sides of the paper?
4.Do you turn off the lights and electric fans when you leave a room?
Conclusion:
1. Would you like to be a greener person?
2. How to be a greener person?
What should you do if you would like to be a greener person?You should sort the garbage.
=You ought to sort the garbage. ought to 应该 情态动词
ought to +动词原形
ought not to + 动词原形New words/?:t /shut off the electricityn.电，电能关闭e.g. You should / ought to shut off the electricity when you leave a room. New words/??t //??lek?tr?s?ti/ New wordseg: They keep a long distance between each other.distance
/?d?st?ns /
距离，路程cloth / kl?:θ/ 织物，布料
1.表示“布，衣料”时，是不可数名词。
eg: a piece of cloth
2.表示用作某种特殊用途的布，如“桌布，台布”等时，是可数名词。
eg:Clean the windows with a soft cloth.拓展延伸clothes:衣服的统称，是一个没有单数形式的复数名 词，不仅包括coat, shirt, dress等这样的“衣服”，也包括trousers, socks等穿在身上的所有东西。
clothing:表示“衣服”的总称，是一个不可数的集合名词。
eg: clothing shopaction /??k?n / n. 行为， 行动
act (v.)行为，表演
Actions speak louder than words.Read the new words togetherought to
shut off
electricity
distance
cloth
action
1b Listen to 1a and choose the correct answers. 1.Jane and Michael are mainly talking about _______.
why we should shut off the electricity when we leave
what we should use when we go shopping
how to be a greener person
2. Actions speak louder than words means ____.
words are not as loud as actions
to do well is better than to say well
actions can speak, but words can’t do it 1c Read 1a and complete the table.You ought to shut off the electricitydistancetake a bus or a taxiwalk or ride a bikesave energyreduce air pollutiontake a cloth bagplastic bagsRetell it Retell 1a like this: I would like to be a greener person.
First I ought to shut off the electricity when I leave a room.
Second, I’d better walk or ride a bike instead of taking a bus or a taxi if I travel a short distance. I will save energy and reduce air pollution.
Third, I will take a cloth bag when I go shopping. I won’t use plastic bags.
It’s easy to be a greener person. Language pointsought to“应该”,是情态动词，后接动词原形
ought to +V原=should +V原
ought to do sth 应该做…
eg: We ought to be polite to the old.
否定形式：ought not (oughtn’t )to do sth
疑问形式：Ought…to…?
eg:--Ought she to go there?(作肯定和否定回答）
--Yes, she ought to. / No, she oughtn’t to.
注意: ought to无人称，时态及数的变化。
ought to与 should 的区别1.ought to在语气上比should强。
2.ought to 指道义上应该做的事。
should指主观上感到有责任或义务去做某事。
eg: We shouldn’t drink and drive.Language points1.shut off = turn off
2.had better (not) do sth
3.instead of +名词/代词/动名词
“代替，而不是”Actions speak louder than words.Remember some English idioms and try to use them often. Easier said than done. 说起来容易做起来难。行动胜于言辞。More idiomsA friend in need is a friend indeed.
患难见真交。
Where there is a will, there is a way.
有志者事竟成。
Failure is the mother of success.
失败乃成功之母。Summary New words:
ought to ,shut off, electricity,
distance, cloth, action
Language points:
1. ought to的用法。
2. shut off
3. had better (not) do sth
4. instead of
Idioms:
1. Easier said than done.
2. Actions speak louder than words.You ______ ______(应该) throw the rubbish into the garbage.
You should ______ ______(关闭)the electricity when you leave a room.
You’d better walk or ride a bike ______ _____ (代替) taking a bus or a taxi if you travel a short distance.
It’s so ______(容易) to be a greener person.
_______ _____ _____ _____ ________.
(行动胜于言辞) Exercises ought to shut off instead of easyActions speak louder than words Read 1a.
Memorize the useful expressions and key sentences that we learn today.
Finish Section B in your workbook.
Preview the rest of Section B and Section C.
AssignmentThank you !