Unit 2 Plant a Plant Lesson 8课件冀教版八年级下册

(共23张PPT)
Unit 2 Plant a Plant!
Lesson 8 Why Are Plants Important
1.学习目标
3.重点探究
2.自主学习
学习导航
5.当堂检测
6.课堂总结
4.拓展提升
新课导入
Do you love plants
Are they important Why
学习目标
1.能熟悉并能正确运用本课时的重点单词和短语
2.能掌握并运用 It is pleasant to do sth和 can't ...without...这两种句型
3.了解植物的重要性，爱护植物
自主学习
pleasant
shade
fulfill
basic
soil
adj. 使人愉快的
n. 树荫；阴凉处
v. 达到；执行
adj. 基本的；基础的
n. 土；土壤
take energy from…
in a word
be made from
It’s pleasant to do …
fulfill one’s needs
carry away
从…...获取能量
总之，一句话
由…...制成
做…...很愉快
满足…...的需求
把……搬（移）走
重点探究
Danny, Jenny and Brian are walking in a forest.
Jenny: I love this forest. There are so many trees and
plants. The air is always clean and fresh.
Brian: Yes. Trees and other plants help clean the air.
Jenny: That's true. It’s pleasant to walk in the forest.
What plants grow near your home
Why do we need plants
THINK ABOUT IT
When the weather is sunny and hot，
you can sit in the shade under a tree.
It s nice and cool.
Danny: I'm hungry! Maybe I can eat a plant.
Brian: Sure, Danny! Look, there is an apple
tree over there!
Danny: Is there a donut tree
Brian: Donuts don’t grow on trees!
Jenny: Trees and other plants are important to people. They help
us fulfill our basic needs.
Brian: That’s for sure. People use trees and other plants in many
ways. The trees and plants take energy from the sun and
turn it into food. Medicine and clothing are also made
from trees and plants.
Jenny: The forest is important to animals, too.
Many animals live in the forest and eat the fruit from the trees.
They eat other plants, too.
Brian: And plants cover the soil. That way, the wind and water don’t
carry the soil away. Plants also make everything look beautiful.
Danny: In a word, we can’t live without plants!
1. Read the lesson and tick the items mentioned.
□People can eat plants or use them as medicine.
□Plants help make the air clean and fresh.
□Many animals live in the forest.
□Books，paper，pencils and erasers all come from plants.
□Animals eat the fruit from the trees.
□The plants cover the soil and can stop the dust.
□When the weather is sunny and hot，people can sit in the
shade under a tree.
□The plants make everything look beautiful.
□People use wood from trees to build houses and furniture.
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√　
√　
√　
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2. Complete the passage with the correct forms of the words in the box.
There are many trees and plants. It’s ________to walk in
the forest. When the weather is sunny and hot，you can sit in
the _______under a tree. Trees and other plants are one of our
________needs for life. Many things are made from trees and
plants. Most animals live in the ________and eat the fruit from
the trees. And plants ________the soil. That way, the wind
and water don’t carry the soil away.
basic　shade　forest cover　pleasant
pleasant
shade
basic
forest(s)
cover
Functions
of trees
(plants)
Environment:
2.Plants help make the air
clean and fresh.
6.The plants cover the soil
and can stop the dust.
Shelter:
3.Many animals live
in the forest.
7.People use wood from
trees to build
houses and furniture.
Food or medicine:
1.People can eat plants or
use them as medicine.
5.Animals eat the fruit
from the trees.
Clothing and school things:
4.Books, paper, pencils
and erasers all
come from plants.
8.People can make
clothing from plants.
拓展提升
1.Trees help clean the air. 树能帮着清洁空气。
help vt. 帮助，常用于两个句型：
help sb. (to) do sth.=help sb. with sth. “帮助某人做某事”
介词with后接名词，通常不接动词-ing形式。
Mr. Wu helps me learn English.
= Mr. Wu often helps me with my English.
2. Then we can sit in the shade under a tree.
in the shade
“在阴凉处”
类似短语
in the sun
in the light
在阳光下
在灯光下
3. Donuts don’t grow on trees!
on trees “在树上”
on the tree
树本身的东西，长在树上。
in the tree
外来的东西，不是树本身的东西
e.g.树上有几只鸟.
There are some birds in the tree.
树上有很多苹果.
There are many apples on the tree.
看! 风筝在树上.
Look! The kite is in the tree.
4. The trees and plants take energy from the sun and turn it into food.
turn…into…
“把…转化…”
e.g.我们可以把树制成纸.
We can turn the tree into paper.
take energy from “从…中获取能量”
5. Medicine and clothing are also made from trees and plants.
与make 有关的被动语态的短语
be made from
由……制成(看不出原料)
be made of
由……制成(看出原料)
be made by
被(某人)制造
be made in
在(某地)制造
6. We can’t live without plants
without介词 “没有”
他没有吃早饭就去上学了。
He went to school without eating breakfast.
没有水鱼就不能活。
Fish can’t live without water.
当堂检测
Trade _____(有助于) the development of industry.
It’s _________(愉快的) to climb a mountain.
________(没有) food, they would have nothing to eat
and they would die.
helps
Without
pleasant
一、根据中文提示完成句子。
4. We can sit in the _____ (树荫)under the tree.
5. Trees and plants help us _____(满足) our basic needs.
6. We can turn the tree ____ paper.
7. Other structures will be _____ ____ (由……制成)high tech materials
called memory metals.
shade
fulfill
into
made from
课堂总结
Unit 2
Lesson 8
重点词汇：
实现/完成, fulfill
愉快的, pleasant
阴凉, shade
土壤, soil
园丁, gardener
频道, channel
重点短语：
帮助某人......
help sb with sth
help sb (to) do sth
be made +介词:
be made of
be made in
be made by
be made from
在树上：
on the tree
in the tree