冀教版八年级下Unit 2 Plant a Plant lesson 8 Why Are Plants Important课件（19张ppt）

(共19张PPT)
Unit2 Plant a plant
Lesson8 Why Are Plants Important
Warm-up
1
Presentation
2
Language Points
3
Exercise
4
内容结构
Warm-up
Talk about the questions
What plants grow near your home
Why do we need plants
air n. 空气，天空
shade n. 树荫
Presentation
Learn some new words
nothing pron. 没有东西，没有事情
die v. 死
（die-died-died, dying）
energy n. 能量
heat n.&v. 热，加热
bamboo n. 竹子
kilogram n. 千克
Read together
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.
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
cover
3
Work in pairs. Think about why we need plants. Discuss it and fill in the mind map. You can use some ideas from Activity1.
Function of trees (plants)
Food or medicine:______
Shelter:______
Clothing and school things:______
Environment:____
1. 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
Language points
例：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.
2. Then we can sit under a tree in the shade.
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. All plants take energy from the sun and make
it into food.
make…into…
“把…制成…”
例：我们可以把树制成纸.
We can make the tree into paper.
我们可以把棉花制成布料.
We can make cotton into cloth.
make 被动语态的短语
be made from
由(看不出原料)制成
be made of
由(看出原料)制成
be made by
被(某人)制造
be made in
在(某地)制造
4.Without food, they would have nothing to eat and they would die.
without
介词“没有”
例：他没有吃早饭就去上学了。
He went to school without breakfast.
他没说再见就走了。
He left without saying good-bye.
Why are plants important
Trees help_____ the air.
Trees ____us food.
We can ______things with trees.
We can ___ under a tree.
We _____ books from trees.
Many animals ____ in trees.
clean
give
build
sit
make
live
All plants take energy ______ the sun and make it ______ food.
A. to; from B. into; to C. from; to D. from; into
Exercise
2. Plants cover the soil. Then the wind and water don’t carry the soil___.
A. in B. out of
C. away D. on
3. Pandas eat___.
A. pandas B. grass C. dinosaurs D. bamboo
4. I would fail___ your help.
A. in B. with
C. within D. without
Homework:
1.Finish the activity book and the practice.
2.Copy the new words and phrases twice.