资源简介

(共32张PPT)
Unit 8
Our Blue Planet
Review
重点单词、词组
01
1. 一个 99 米高的瀑布
2. 贯穿;流过
3. 在地球上
4. 谈论…...
5. 在东北部
6. 多长
7. 6671千米长
a 99-meter-high waterfall
run through
on the earth
talk about…
in the northeast of...
how long
6671 kilometers long
Read and find the phrases.
Read and find the phrases.
1. 在地下 ________________
2. 在海洋里 ________________
3. 在天空中 ________________
4. 上升，升起_______________
5. 形成云 ________________
6. 众所周知________________
7. 对某人重要________________
8. 因为 ________________
9. 把……称作……________________
10. 每一滴（水）________________
under the ground
in the ocean
in the sky
go up
form clouds
as we all know
be important to sb
because of
call sb + 称呼
every drop of water
Read and find the phrases.
1. 事实上____________________
2. 是…的家园_____________________
3. 如此重要_______________________
4. 从…取水________________________
5. 不得不 _________________
6. 担心…_________________
7. 加入某人___________________
8. 起作用_______________________
9. 充分利用___________________________
as a matter of fact
be home to
so important
get water from
have to
worry about…
join sb
make a difference
make full use of…
语法知识点
02
Key points
1. It is a 99-meter-high waterfall in North America.
复合形容词：有些形容词由两个及以上的单词构成，叫复合形容词。
结构：数词 + 名词(单数) ... 的
两小时的: __________ 五天的 : _________ 六岁大的: ___________
five-day
two-hour
six-year-old
翻译：他是一个8岁大的男孩。______________________
=__________________________________________
这是一个3千米长的河流。_________________________
=________________________________________________
He is an 8-year-old boy.
He is 8 years old.
It is a 3-kilometer-long river.
The river is 3 kilometers long .
Key points
2. —How long is it
—It is 6,671 kilometers long.
how long 意为 “多长”, 此处用于对长度的提问。
how构成的疑问词组有：
拓展how long还可以对一段时间提问，意为“多久；
多长时间”。
—How long will you stay here
你要在这儿待多久
—For a week. 一周。
how wide: 多宽
how tall: 多高
how deep: 多深
how heavy: 多重
她多高？________________
她1.62米。________________________
How tall is she
She is 1.62 meters tall.
Key points
3. It runs through eastern Africa.
through “介词 ”“穿过，贯穿 ”，表示从物体内部穿过。
run through “贯穿；穿过” ，
这条河贯穿这座城市。
——————————————
The river runs through the city.
4. It is over 25 million years old.
Key points
模糊的数量，加s：
hundreds of 数以百计的
thousands of 成千上万的
millions of 数以百万计的
billions of 几十亿的
具体几百几千，不加s
200: two hundred
3000: three thousand
Key points
5. It is one of the four oceans on the earth.
one of + 可数名词复数，意为____________
当它作主语时，谓语动词用______数形式
One of the students______a boy.
…中之一
单
is
One of the____________ red.
apples is
Key points
6. be important to... 对...是重要的
钱对我们说很重要。
_____________________
Money is important to us.
Key points
7. need v. & n. 需要
need sth 需要某物
need to do sth 需要做某事
need sb to do sth 需要某人做某事
我需要一个苹果。
___________________
我需要买一个苹果。
______________________
我需要Lucy 去买一个苹果。
_________________________
I need an apple.
I need to buy an apple.
I need Lucy to buy an apple.
Key points
It’s adj that + 从句 …很…是怎么样的
It’s adj (for sb) to do sth 做 sth(对某人来说)很...
我们努力学习很重要。
___________________________________
努力学习对于我们来说很重要。
______________________________
It is important that we should study hard.
It is important for us to study hard.
because of: 是复合介词，其后接名词、代词、动名词
because: 是连词，其后接句子
简单的说：because of sth
because + 句子
I didn't buy it it was too expensive.
I didn't buy it its price.
I will stay at home it is raining now.
I will stay at home the heavy rain.
because
because of
because
because of
Key points
little/a little + 不可数名词
few/a few + 可数名词
a little/a few 有一点，有一些
little/few 几乎没有
There is a little juice in the glass, you can drink it.
There is little juice, please go and buy some.
还有点果汁。
没什么果汁了。
（肯定、不可数）
（否定、不可数）
有a就有
没a就没有
Key points
(1)There is________rice on the plate. Let's eat!
(2)There is_______bread on the plate. Let's buy some!
(3)He has ______ friends, he usually go to play with them.
(4)There are _____students in the classroom, all the students go to the playground to play football.
a little
little
a few
few
用a little ,little; a few , few填空:
练一练
8. so they have to spend a lot of money digging wells.
Key points
sb. spend + 钱/时间 + on + sth
sb. spend + 钱/时间 +（ in ）+ doing sth
spend
Lucy花2小时弹钢琴。
Lucy spends two hours on piano.
Lucy spends two hours ( in ) playing the piano.
花时间
spend 的用法
9. so they have to spend a lot of money digging wells.
Key points
spend 的用法
sb. spend + 钱/时间 + on + sth
sb. spend + 钱/时间 +（ in ）+ doing sth
spend
我妹妹花100元买她的裙子。
My sister spends 100 yuan on her dress.
My sister spends 100 yuan ( in ) buying her dress.
花钱
语法：数字
03
million
1,000
thousand
10,000
ten thousand
100,000
one hundred thousand
千
万
十万
1000,000
one thousand thousand
,
one million
百万
大数字的读法
one million
10,000,000
ten million
百万
1,000,000
千万
100,000,000
one hundred million
亿
1000,000,000
one thousand million
十亿
,
billion
one billion
大数字的读法
/ b lj n/ num. 十亿
1234567890
试一试：读下面的数字。
billion
million
thousand
234个百万,
567个千,
890
1个十亿,
1个十亿,
试一试：读下面的数字。
1234567890
billion
million
thousand
one billion,
234个百万,
567个千,
890
two hundred and thirty-four million,
five hundred and sixty-seven thousand,
eight hundred and ninety
one billion,two hundred and thirty-four million, five hundred and sixty-seven thousand, eight hundred and ninety
语法：祈使句
03
祈使句
祈使句
定义
表示：____________________________
请求、命令、建议、禁止等。
特点
主语是_____，常常_______。以动词______开头。
you
省略
原型
肯定结构
Be 型：___________________________
Do 型：___________________________
Let 型：___________________________
否定结构
用 Don’t 开头：___________________
用 Never 开头：__________________
用 No 开头：_____________________
用 Let 开头： ____________________
Be + 名词 / 形容词等 + 其它
动词原形 + 宾语 + 其它
Let sb do sth
Don’t do sth !
Never do sth !
No doing sth !
Let sb not do sth
1. 肯定结构：
祈使句
Be quiet.
Sit down.
Let me help you.
Be型：Be + 名词 / 形容词等 + 其它
Do(行为动词)型：动词原形 + 宾语 + 其它
Let型：Let sb do sth
2. 否定结构：
祈使句
(1)用 Don’t 开头： Don’t do sth !
别再迟到了！
Don’t be late again!
(2) 用 Never 开头：Never do sth !
永不言弃！
Never give up !
(3) 用 No 开头：No doing sth !
禁止游泳！
No swimming !
(4) 用 Let 开头：Let sb not do sth
让我们别在这里游泳！
Let’s not swim here !
祈使句、祈使句，请求、命令或建议。
主语是you常省去，动词原形开头记。
否定形式要注意，don’t句首别客气 。
要客气用please，句首、句末没关系。
若在特殊情况下，no来否定也可以。
祈使句口诀
语音
04
Pronunciation
Listen and read the sounds and words aloud.
Thank you!

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