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(共25张PPT)
Unit2 Plant a Plant!
Lesson 8
Why Are Plants Important
同学们，上一课学习的单词你们都掌握了吗？现在大家来检验一下，点击下面的音频开始听写吧！
词汇听写
课文导入
Answer the following question:
1. How many kinds of trees do you know
2. Do you know the importance of trees
课文呈现
THINK ABOUT IT
·What plants grow near your home
·Why do we need trees
Danny, Jenny and Brian are
walking in a forest.
Jenny: I love this forest. There
are so many trees and plants. ①
The air is always clean and fresh.
Brian: Yes. Trees and other plants help clean the air.
温馨提示：此符号表示“考点精讲点拨”链接。
课文呈现
Jenny: That’s true. It’s pleasant to walk in the forest. ② When the weather is sunny and hot, you can sit in the shade under a tree. ③ 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. ④
课文呈现
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. ⑤ Medicine and clothing are also made from trees and plants. ⑥
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. ⑦ Plants also make everything look beautiful.
Danny: In a word, we can’t live without plants！ ⑧
课文呈现
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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√　
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课文呈现
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.
pleasant
shade
basic
forest(s)
cover
basic　shade　forest cover　pleasant
课文呈现
3) Work in pairs. Think about why we need plants.
Discuss it and fill in the mind map.
You can use some ideas from Activity 1.
Environment：
____________________
Clothing and school things：
_____________________
Shelter：
____________________
Food or medicine：
____________________
Functions of trees (plants)
考点精讲
① There are so many trees and plants.
so /s / adv. 如此；那么
e.g. I have so many things to do every day.
我每天有那么多的事情要做。
I’m sorry to give you so much trouble.
对不起，给你添了这么多麻烦。
考点1
so many如此多，修饰复数名词
so much 如此多，修饰不可数名词
考点精讲
“如此、这样”
各不同 so 修饰形容词或副词 so+ 形容词或副词
so+ 形容词+a/an+ 单数名词
so 可以用来修饰“many/much/few/little+名词”，such 不能这样用
such 修饰名词（短语） such a/an+ 形容词+ 单数可数名词；such+形容词+ 复数名词或不可数名词
辨析：so, such
考点精讲
e.g. This is so important a match. 这是一场那么重要的比赛。
I had never seen such a good match before that day.
那天以前我从未看过这样好的比赛。
Don’t make so much noise! 别制造那么多噪音！
中考在线1：We have _____ time that we can finish the work very well. [天水]
A. such much B. so many C. so much D. such many
C
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考点精讲
② It’s pleasant to walk in the forest.
pleasant /'pleznt/ adj. 使人愉快的；舒适的
考点2
pleased adj. 高兴的
pleasant adj. 令人愉快的
pleasure n. 快乐
pleasing adj. 令人满意的
考点精讲
① pleasant 既可作表语也可作定语，多用于描述人或事物的性质
② pleased 多描述人的感情，表示“某人对某事(或某人)感到高兴的或满意的”。
辨析：pleasant 与 pleased
e.g. This is a pleasant journey. 这是个令人愉快的旅行。
If you jump the queue, others will not be pleased.
如果你插队，别人会不高兴的。
考点精讲
中考在线2：Compared with a 1-day weekend, a 2-day weekend is _____ as we may have enough time for our hobbies. [南通]
A. more pleasant B. less pleasant
C. the most pleasant D. the least pleasant
A
中考在线3：—Could you please help me look after my pet dog I will be away for about two weeks.
—_______! I will take good care of it. [广元]
A. With pleasure B. You are kidding C. No way
A
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考点精讲
③When the weather is sunny and hot, you can sit in the shade under a tree.
shade / e d/ n. (an area that is dark and cool under or behind sth., for example a tree or building, because the sun’s light does not get to it) 树阴；阴凉处
e.g. Some girls are playing games in the shade.
一些女孩正在树阴下玩游戏。
考点3
in the shade在树阴下；在阴凉处
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考点精讲
④They help us fulfill our basic needs.
help (sb.) (to) do sth. 帮助（某人）做某事
e.g. The cleaner helps clean the floor.
这台吸尘器有助于清洁地板。
Jack likes to help his sister learn English.=
Jack likes to help his sister with English.
杰克喜欢帮助他的妹妹学习英语。
考点4
其中to可以省略
help sb. with sth.(在某方面帮助某人)常与
help sb.(to)do sth.(帮助某人做某事)进行同义句转换。
考点精讲
basic / be s k/ adj. 基本的；基础的
e.g. These are the basic rules of playing basketball.
这些是打篮球的基本规则。
Drums are basic to African music.
鼓是非洲音乐的基本乐器。
考点5
basic在句中可作定语或表语，常与介词to 连用。
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考点精讲
⑤The trees and plants take energy from the sun and turn it into food.
take...from... 从……获取……
e.g. We can take energy from the food and drinks.
我们能从食物和饮料中获取能量。
考点6
from 是介词，后面可接名词、代词或动名词。
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考点精讲
⑥ Medicine and clothing are also made from trees and plants.
[高频] be made from 由……制成
考点7
① be made from 从成品中看不出原材料，制成物已改变了原材料的性质。
②be made of 由……制成，指从原料到制成品，原有性质不变。
辨析：be made from与be made of
考点精讲
e.g. The cake is made from a mixture of flour, sugar and eggs.
这个蛋糕是由面粉、糖和鸡蛋的混合物做成的。
The desks are made of wood.
这些桌子是由木头制成的。
中考在线4：Your gloves should be made ______ leather, for they feel soft and smooth. [宿迁]
A. in B. on C. for D. of
D
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考点精讲
⑦ That way, the wind and water don’t carry the soil away.
carry...away 把……带走/ 搬走
e.g. Would you please help me carry the heavy bag away
请你帮我把这个沉重的袋子搬走好吗
考点8
与away有关的其他短语
take...away 把……带走
put...away 把……收起来/ 放好
go away 走开
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考点精讲
⑧ In a word, we can’t live without plants!
in a word 总而言之，相当于in one word
e.g. In a word, I can’t go out as I have many things to do.
总而言之， 我不能出去， 因为我有许多事情要做。
考点9
考点精讲
Can I have a word with you 我能和你谈一谈吗？
He had words with his wife last night.昨晚他和他的妻子吵了一架。
In other words, you’ll come instead of him. Right
换句话说，你将代替他来。对吗？
与word有关的其他短语：
① have a word with... 与……谈一谈
② have words with... 与……争吵
③ in other words 换言之；换句话说
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课堂小结
本节课我们主要学习了以下重点内容：
（1）重点短语：in a word
（3）重点句式：It is + adj. + (for sb.) to do sth.

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