Unit 8 Save Our World.Lesson 45 Let's Sort Garbage!课件

课件45张PPT。Let's Sort Garbage! To understand the text
To use the words correctly:
empty sort litterReviewVocabulary sort
empty
metal
plastic
recycle
amount
litterv. 分类；整理
n. 类；种类；类型
v. 把……弄空
adj. 空的
n. 金属
n. & adj. 塑料(的)
v. 回收再用；再循环
n. 量；数量
n. 垃圾
v. 使乱七八糟；乱扔sort the garbageglassmetalplasticpaperpackagingand othersListen and answer.What does Jenny want to do to help Jenny?
She wants to help him sort the garbage.
What makes the most garbage?
Paper.
What will Danny do with the toy car?
He will take the car home and clean it. When he finish fixing the car, he will give it to his little cousin, Debbie.
P
L
A
S
T
I
C
M
E
T
A
LG
L
A
S
SP
A
P
E
RPaper is the most. Glass is the least. There is more paper than plastic. There is less metal than plastic. ReadingRead the lesson and write true (T) or false (F). There is a lot of garbage: glass, metal, plastic and paper. ( )
There is the most amount of glass and the least amount of paper. ( )
Danny found Debbie’s toy car in the garbage. ( )
Danny once cut his foot on a piece of broken glass. ( )T F F T Circle the words that “it” refers to in each sentence. Example:
It is a waste to use paper only on one side.It is fun to travel.
It is not right to waste things.
It is quite easy to find information with this program.
They think it is rude to point with a finger.
It is dangerous to leave broken glass on the ground.Language Pointsempty: v. 倒空 adj. 空的
The streets began to empty after midnight.
午夜过后街上行人开始稀少了。
Vargas emptied his tool bag.
瓦格斯腾出自己的工具袋。
1. Jenny has emptied two bags of garbage onto the floor. sort: v. 分类
They sorted the oranges into large ones and small ones.
他们把橘子按大小分类。
Please sort these cards according to their colour.
请按颜色将这些卡片分开。2. Can I help you sort it? 1) 此句为含有情态动词的被动语态，其构成形式为：情态动词(can / may / must / should) +be + 过去分词
The flowers should be watered every day.
花儿应该每天浇水。
Cars mustn’t be parked here.
小轿车不可以停放在这里。
Children can be taken to the cinema free on Children’s Day.3. Almost all of it can be reused or recycled!2) re-是前缀，意思是“再，重新”。例如，rewrite, replay, reappear, rebuild, remarry等。
reuse意思是“重新使用，再使用”
She often reuses old envelopes.
她经常重复使用旧信封。
recycle意思是“使再循环；使……重新利用，重复利用”
They recycle empty tins so as to use the metal.
他们回收空罐头盒以利用其金属。too much:
too many:
much too:太多，修饰不可数名词或修饰比较级，含有“过分，难以接受”之意。太多，修饰可数名词的复数。太……，修饰原级。4. People throw too much away!1. 去年雨水太多。
There was __________ rain last year.
2. 不要吃得太多, 否则你会生病的。
Don’t eat ________, or you’ll get ill.
3. 这个比那个大得多的多。
This one is ________ bigger than that one.
4. 汽车太多。
There are _____________ cars.
5. 收音机太吵了，请关掉它。
The radio is _________ noisy. Please turn
it off. too muchtoo muchtoo muchtoo manymuch too the least amount of 意为“数量最少的……”
The fastest team dropping the least amount of hot peppers wins.
速度最快而且辣椒掉的最少的队获胜。5. There is the least amount of glass.can be done是含有情态动词的被动语态。
fix相当于mend和repair，意思是“修理，修补”，但fix较为口语化。mend除可以表示一般性修理外，还可以用来表示对衣服等进行修改或修补。6. It can be fixed.7. It can all be recycled, and made into new glass.
be made into … 被制成……
He will make this skin into leather.
他将把这张皮制成皮革。
We can make glass into bottles.
我们能把玻璃制成瓶子。Grammar Using “it”语法讲解建议采用归纳法，如尽可能多的呈现一些相关例句，或可让学生从已学课文中找相应例句，引导学生试着从所观察到的语言现象中总结出语法规律。1) It is a waste to use paper only on one side.
2) It is fun to travel.
3) It is not right to waste things.
4) It is quite easy to find information with this program.
5)They think it is rude to point with a finger.6) It is dangerous to leave broken glass on the ground.
7) It’s necessary to discuss the problem with an experienced teacher.
8)It is not very good for you to smoke so much． to test your sense of observation
to test your ability of short-term memory
to test your ability to highlight the language pointsGuessing Game1) It is a waste ___ ____ paper only on one side.
2) It is fun ___ ________.
3) It is not right ___ ______ things.
4) It is quite easy ___ ______ information with this program.
5)They think it is rude ___ ______ with a finger.Fill in the blanks.to useto travel to findto wasteto point6) It is dangerous ___ _____ broken glass on the ground.
7) It’s necessary ___ ______ the problem with an experienced teacher.
8)It is not very good for you ___ _______ so much． to leaveto discuss to smokePractice1. It is not always easy _____ invitations.
A. to refuse B. refusing
C. to be refused D. being refused
2. It is bad for your eyes ___ computer games too much.
A. plays B. to play
C. play D. playing
3. It _____ him four hours and a half to do the work.
A. spent B. used C. needed D. took选择填空。4. It was careless _____ him to break the coffee cups.
A. for B. to
C. with D. of
5. What a pleasure___ with them!
A. is it to work B. it is to work
C. to work D. to be worked以上我们已经通过归纳总结和练习对本课的语法内容有了一定的了解，下面就让我们根据
之前练习的考察情
况进一步选择讲解
该语法项的重难点。动词不定式作主语的用法
Grammar动词不定式的基本形式为“to + 动词原形”，其否定形式是“not + 动词原形”。
它能起名词的作用，在句子中充当主语、表语、宾语和宾语补足语。动词不定式在作主语时，常用it作形式主语，而往往将动词不定式放在谓语或表语之后。
It’s not easy to learn a foreign language well.
(= To learn a foreign language well is not easy.)
学好一门外语不容易。在此句型中，如果要说明动词不定式的动作是谁做的，可在不定式前加一个for引起的短语，作不定式的逻辑主语。即：It is + 形容词 + for sb + to do sth(对某人来说做……是……)。如：
It’s difficult for us to finish the work.
对我们来说，完成这项工作很困难。
It’s hard for me to answer your question.
要我回答你的问题很难。但是，如果表语是kind, nice, right, wrong, clever, polite等描述行为者的性格、品质的形容词，则应在不定式前加一个of引起的短语。即：It is + 形容词 + of sb + to do sth (某人做……是……)。
It is kind of you to help me with my lessons. 你帮助我做功课，太好了。
It is so nice of you to come to see me.
你来看我太好了。It takes/took + sb + some time + to do sth 意为“做……花了某人多少时间”
It takes her an hour to review her lessons every day.
她每天花一个小时复习功课。
It took more than 100,000 slaves twenty years to build the Great Pyramid.
十万多个奴隶花了20年的时间建成了那座大金字塔。It is + 名词 + to do sth 意为“做……是……”
It is our duty to serve the people.
为人民服务是我们的责任。
It is an honour to make a speech here. 在这儿演说很荣幸。注意： 动词不定式作主语，同时有一个不定式作表语时，不能转换成“It’s … to do sth.”的句型。如：
[正]To see is to believe.
百闻不如一见。
[误]It’s to believe to see. This beautiful bowl is made of _____ (金属).
2. The streets soon e______ when the rain began.
She found the ring while s______ some clothes.
When my clothes are worn out,I generally _____ them _____(扔掉). Fill in the blanksmetalmptiedortingthrowaway5. There isn‘t much metal in the bodywork of this new car; it’s mainly ______(塑料).
6. The Japanese r______ more than half their waste paper.
7. Please wait at the school gate. John will ___ you ___ there.
8. About two percent of fast-food packaging ends up as l_____ (垃圾). ecyclepickupitterplasticsort garbage
empty
the least amount of
can be done
be made into
不定式结构作主语，it作形式主语Homework
Review Lesson 45.
2. Finish off the activities on page 119.Preview1. Learn the words in Lesson 46 by heart.
2. Read the text in Lesson 46 and underline the useful phrases.