资源简介

(共26张PPT)
Welcome to the unit
Unit 7 The natural world
A Kitty is learning about ecosystems. Read the facts below with her and tick the ones you already know.
Half of the world‘s animals and plants live in rainforests.
Coral /'k r l/ reefs /ri fs/ look like rocks, but they support a lot of life in just a small area.
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①支持；拥护 ②帮助；援助
③资助；扶养
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Grasslands often lie between deserts and forests.
The polar ice is home to animals like polar bears and penguins/'pe ɡw nz/.
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思考：Do you know whether corals are animals or plants
Corals are animals, because they can’t make their own food like plants do through photosynthesis（光合作用）. They have tiny tentacles（触须） to catch food, such as plankton（浮游生物）.
B Kitty and David are talking about ecosystems. Work in pairs and discuss the topic. Use the conversation below as a model.
Kitty: Do you know anything about ecosystems/'i k s st mz/, David
David: I know that grasslands in different places are home to different animals. In Inner Mongolia, there are horses and cows, but in Africa, there are lions and giraffes.
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长难句分析：这是一个含宾语从句的复合句。主句主语是I，谓语是know，that grasslands in different places are home to different animals是宾语从句；从句中的in different places是介词短语作后置定语，修饰grasslands。
Kitty: Oh, really Do you know anything about deserts
David: Well, it‘s very dry in deserts because there’s little rainfall/'re nf l/. And the difference in temperature between day and night is huge.
Kitty: Yes, the climate /'kla m t/ in deserts is so awful that only a few animals and plants can live there.
David: It's true. The desert plants keep water in their leaves and many animals there get water from these plants.
C What other fun facts about ecosystems do you know
The tundra（苔原） ecosystem has a very short growing season because it’s so cold.（答案不唯一
climate /'kla m t/ n. 气候(教材P93)
(观察)· The climate in Kunming is neither too hot nor too cold.
昆明的气候既不太热也不太冷。
· Scientists are paying close attention to climate change.
科学家密切关注气候变化。
· Hainan Island has a tropical climate. 海南岛属于热带气候。
· His class has a positive climate. 他的班级有一种积极的氛围。
探究一 核心单词
归纳拓展
climate 作名词，意为“气候”，用于描述一个地区长期的天气模式、温度或降雨等天气情况。也可以指某种氛围或社会大环境。
mild climate 温和气候 mainland climate 大陆性气候
tropical climate 热带气候 climate change 气候变化
学会运用1: Because of the bad c , a lot of animals can’t find enough food.
学会表达2: 它们也能为我们提供气候变化的信息。
They can also provide us with information about __________ __________.
limate
climate change
1 look like 看起来像(教材P93)
(观察)· The girl looks like her mother. 那个女孩看起来像她妈妈。
·The stone looks like a dog. 那块石头看起来像只狗。
· The sky looks like it’s going to rain. 天气看起来要下雨了。
· It looks like we might be late for the meeting.
看起来我们可能要开会迟到了。
·—What does your new teacher look like 你的新老师长什么样？
—He is tall and strong. 他又高又壮。
探究二 核心短语
归纳拓展
look like 意为“看起来像”，有以下几种用法：
(1)描述外貌，指某人或某物和其他人或物具有很大的相似性。
(2)描述天气或环境，意为看起来有某种可能。
(3)表达某种可能性，指意外情况可能发生。
询问某人的外貌长什么样使用句型“What do/does+主语+look like ”意为“……长什么样 ”
学会运用1: His mother is tall with long hair. （对画线部分提问）
__________________________________
学会表达2: 那些云朵看起来像棉花糖。
The clouds __________ __________ some cotton candy.
What does his mother look like
look like
2 be home to 是……的栖息地/所在地(教材P93)
(观察)· The Amazon rainforest is home to thousands of
plants and animals.
亚马孙雨林是成千上万动植物的栖息地。
· Hangzhou is home to green tea in China.
杭州是中国绿茶的故乡。
· China is home to a rich and ancient culture.
中国是丰富而古老文化的发源地。
归纳拓展
be home to 意为“是……的栖息地/ 所在地”，通常用于描述某地是某一特定事物的起源或聚集地，可以指地理领域、生态领域或文化领域。home 前面不使用任何冠词。
学会运用3: Coral reefs are home to many kinds of creatures.（选出画线短语的含义）
A. 栖息地 B. 宿舍
C. 旅馆 D. 中心
学会表达4: 四川省是大熊猫的故乡。
Sichuan Province __________ __________ __________ giant pandas.
A
is home to
3 between...and... 在……和……之间(教材P93)
(观察)· There is a small path between the two villages.
这两个村庄之间有一条小路。
· The chair is between the bed and the big desk.
椅子在床和大书桌之间。
· She is the tallest among all her friends.
她在她所有的朋友之中是最高的。
· He is among the best students in the class.
他在班里的最好学生之列。
辨析: between 与among
between 主要用于表示在两个人或事物之间，强调
两者之间的明确关系。
among 用于三者或三者以上的人或事物之间，通
常强调一个群体或整体中的关系。
一语辨异 Among all the students in his class, he sits between Lucy and Linda. 在他班级的所有学生中，他坐在露西和琳达之间。
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A
学会运用5: The bird in Picture ________ is between the boxes.
A. B.
C. D.
学会运用6: I think the Spring Festival is the most important
a all the festivals in China.
学会表达7: 在语文和英语之间你更喜欢哪一个？
Which do you like better ___________ Chinese _________ English
mong
between
and
...the climate in deserts is so awful that only a few animals and plants can live there. ……沙漠里的气候如此恶劣，以至于只有少数动植物能够在那里生存。(教材P93)
(分析结构) 这是一个主从复合句，主句中the climate 是主语， is 是系动词，awful 是形容词作表语，in deserts 是介词短语，修饰名词the climate。that 后引导的是结果状语从句。
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探究三 核心句式
· It was so cold outside that we had to stop the game.
外面太冷了，我们不得不停止了比赛。
· He did so well in the exam that everyone praised him.
他考得那么好，人人都称赞他。
· I set up the computer so that they could work at home.
我把电脑设置好，这样他们就可以在家里办公了。
归纳拓展
so...that... 用于表达因果关系，强调结果或影响。描述一个事件或情况如此强烈，以至于导致另一个事件或情况发生。so...that...中的so 是副词，用于修饰形容词或副词，句型结构是：主语+ 谓语+ so + adj./adv. + that 从句.
辨析: so...that... 与so that
so...
that... 意为“如此……以至于……”，引导结果状语从句，so 后面接形容词或副词，that 后面接从句，so 和that 要分开。
so
that 意为“以便于；为了”，通常引导目的状语从句，从句中通常有情态动词can，could，may，might 等。主句在前，从句在后，且主句和从句之间没有逗号隔开。
学会运用1: I was _______ sleepy _______ I could hardly keep my eyes open.
A. not only ; but also B. either; or
C. both; and D. so; that
学会运用2: —I think I am the shyest in my class. What should I do
—Be more active in class _______ you can improve your ability to express yourself.
A. so that B. unless C. or D. although
D
A
学会表达3: 那个女孩非常有创造力，总能想出新主意。
The girl is ___________ creative ___________ she always comes up with new ideas.
so that

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