Lesson 7 Planting Trees 教学设计

Lesson 7 Planting Trees
教学目标：
1.懂的运用表示植树的词:hole,large,cover,fill,storm,dirty,northern,bottom
2知道一些介绍植树的句型:
We are digging a hole.
Now,put the seedling inside,cover the roots and fill the hole with dirt.
3.巩固不定式的用法。
重点难点：
1.正确使用本课的单词和短语:hole,large,cover,fill,storm,dirty,northern,
bottom,by the way,turn into,for sure,be made up of
2.运用所学知识介绍植树的过程:
We are digging a hole.
Now,put the seedling inside,cover the roots and fill the hole with dirt.
3.掌握以下重点句子:
It must be large enough to hold the roots of the seedling.
By the way,there is another group of people down the hill.
Many people are worried because the environment is changing…
Nothing can stop the wind because there are not many trees left.
A lot of rich lands in the northern area have turned into desert.
教学思路：
本课时的教学内容是冀教版八年级下册英语第二单元的第一课时,主要涉及植树情况的介绍。在授课之前先让学生通过网络了解或者介绍自己参加过的植树活动了解本课要点。课上可以通过让学生小组合作的形式进行相互交流;然后教师通过幻灯片、图片向学生展示植树的过程,并让学生用英语进行介绍。
教学准备：
设计教学PPT,录音机,多媒体,图片和单词卡片。
教学过程:
StepⅠ.Lead in
Leading in 【情景1】
T:Hello,boys and girls.When is Tree Planting Day in China?
Ss:It’s March 12th.
T:What are the basic steps for planting a tree?
S1:Look for the seedlings.
S2:Dig a hole.
T:Why is planting trees important to the environment?
Discuss the questions in groups.The teacher shows some pictures,such as a storm/a flood.Ask the students to talk about these problems for three minutes.Then we can know the importance of trees,then let them present their talk in class.
[设计意图]　利用学生学过的内容,从询问植树情况开始,讨论植物的作用,轻松进入语境,进而介绍生词,图片的使用使学习更加形象直观,自然地进入谈论植树的新话题。
Leading in 【情景2】
Greet the class.
T:Hello! Boys and girls!
Ss:Hello! Mr./Ms.XX.
Ask the students to introduce the plant in class.
S1:I like trees.
S2:I like flowers.They’re beautiful.
S3:I think it is very important.
Show the new word “plant” and show the picture of planting trees to the students.
T:What do you know about planting a tree?
S4:Dig a hole.
S5:Water.
S6:Tie to a stick.
[设计意图]　运用学生所学的知识,从谈论熟悉的入手进入新内容的学习,运用实物或图片帮助学生学习生词,直观、感性、形象。
StepⅡ.Presentation
If some students feel the conversation is too long,the teacher can divide it into two or three talks.Then ask them to read them in pairs.After a while,ask them to act them out.
(1)Maybe you should make the hole a little bigger.
(2)By the way,there is another group of people down the hill.
(3)A lot of rich lands in the northern area have turned into desert.
Please pay attention to the long words:northern,everywhere.
The teacher should help students to learn the expressions:By planting more trees,people hold back the expansion of the desert and raise northern China’s forest coverage by 5% to 15%.By the year 2050,the Green Great Wall will be about 2 800 miles long.
[设计意图]　两人组合练习对话。创设情景,使同学们身临其境,激发说的欲望。在练习中巩固本课需要掌握的句型。
StepⅢ.Listening
T:Listen to the tape and answer the questions:
1.Where should we put the seedling?
2.Why are many people worried?
3.What does the worker think of planting trees?
【Keys】　1.A big hole.2.Because the environment is changing.3.It’s fun and important.
[设计意图]　加深同学们对整体的掌握,学生们带着问题有目的地倾听,容易把握内容回答问题。
StepⅣ.Post-listening Activities
After listening to the conversation,get the class to read it aloud.
Ss read aloud.Then practice the conversation.Focus on the stressed words,pronunciation and intonation.
[设计意图]　学生训练听力之后,朗读巩固,训练学生的语音语调;再模仿对话,编出自己的对话,培养学生运用目标语言进行交际的能力。
StepⅤ.Reading
1.Read the text and decide whether the statements are true or false.
(1)The hole must be large enough to hold the seedling. (　　)
(2)They asked a teacher for help. (　　)
(3)Almost no rich lands in northern area have turned into desert. (　　)
2.Then ask some volunteers to read the passage.
3.Read the text again and fill in the blanks.
(1)　　　　 , there is another group of people down the hill.?
(2)Many people 　　　　because the environment is changing…?
(3)Nothing can stop the wind because there are not many trees 　　　　.?
(4)A lot of rich lands in the northern area have 　　　　desert.?
【Keys】　1.(1)F　(2)F　(3)F　3.(1)By the way　(2)are worried　(3)left　(4)turned into
☆教材解读☆
1.Maybe you should make the hole a little bigger.?
◆maybe作副词,意思是“也许;大概”,在句中作状语,一般放在句首,可以位于句中,还可以单独作答语。
【拓展】　may be是由“情态动词may+动词原形be”构成的,在句中作谓语,意思是“可能是”。
It may be in your bag.它可能在你包里。
◆a little bigger意为“大一点”。a little在此作程度副词,可用于修饰形容词、副词的比较级,表示比较的程度。
She is a little taller than her sister.
她比她的姐姐高一点。
【拓展】　除了a little 之外,much,a lot,even,far等都可以修饰比较级。
She did much better this time.
她这次做得好多了。
2.By the way,there is another group of people down the hill.?
by the way意为“顺便问一下;顺便说一下”,表示附带说,常用于交谈中引出题外的话语。通常放在句首,用逗号将其与后面的句子隔开。
By the way,what time is it?
顺便问一句,现在几点了?
【拓展】　由way 构成的其他短语:
(1)in the way妨碍。
There were some big stones in the way.
有一些大石头挡住了路。
(2)in this way用这种方法。
I worked out this problem in this way.
我用这个方法解决了问题。
(3)on the way即将到达。
The spring is on the way.春天即将到来。
(4)in one way在某种程度上。
In one way,I agree with her.
在某种程度上,我同意她的观点。
3.A lot of rich lands in the northern area have turned into desert.?
turn into意为“变成”,相当于grow into,其中into 是介词,后接名词或代词作宾语。turn sb/sth into sth意为“把……变成……”。
The witch turned the prince into a frog.
女巫把王子变成了青蛙。
【拓展】　含有turn的短语:turn in 交还; turn out出席;turn over 翻身; turn up 露面。
　　4.By planting more trees,people hold back the expansion of the desert and raise northern China’s forest coverage by 5% to 15%.By the year 2050,the Green Great Wall will be about 2 800 miles long.?
◆by planting more trees表示“通过种植更多的树”,其中的by表示“通过……方式”。
May I pay by cheque?
我能用支票付款吗?
◆by 5% to 15%表示“由5%到了15%”,此处的by表示变化的程度。
House prices went up by 50%.
房价涨了50%。
◆by the year 2050表示“到2050年为止”,此处的by 表示“不迟于……”。
Can you finish the homework by nine o’clock.你九点钟前能完成作业吗?
【拓展】　by的其他常见用法:
(1)“by+地点”表示“在……旁边”,如:by the river,by the window。
(2)“by+部位”表示“抓住”。
I caught her by the hand.
我抓住了她的手。
(3)by用于被动语态,表示“被……”。
This book was written by Lu Xun.
这本书是鲁迅写的。
(4)“by+交通工具”表示“乘……”,如:by bus,by car,by boat,by air,by ship,by plane。
[设计意图]　学生通过阅读课文,了解重点内容,并且通过判断对错来巩固对课文的理解和掌握;再读课文后,填空继续训练对课文的理解。
Step Ⅵ. Complete Let’s Do It!
Ask the students to read the lesson again and fill in the blanks in No.1,2,3,and pay attention to the new words and phrases.
[设计意图]　Let’s Do It! No.1,2,3重点都是阅读教学,包括了课文的大部分内容,使学生又一次巩固了课文内容,培养了阅读的能力。
StepⅦ.Task
PAIR WORK:Let’s Do It! No.4
Ask students to come to the front of the classroom,and some start walking towards others as the teacher says “go”.They must stop as the teacher says “stop”.Then they can have a conversation with the student who is standing in front of him/her.
[设计意图]　No.4的重点是口语练习,同学们通过随机组合来完成两人合作。以“如何植树”为话题,提供了一个语境完整、内容丰富的对话,自然呈现本单元的核心句型,为学生进一步输出语言提供了口语示范。
StepⅧ.Exercises
T:Now,look at the sentences with some missing words.Please use proper words to fill them.
1.This box 　　　　(被装满) books.?
2.　　　　(顺便问一句), do you know Lucy??
3.More and more trees will　　　　(覆盖) the earth.?
4.This book　　　　(不可能是) hers.?
5.Are the things here　　　　(足够便宜)??
【Keys】　1.is filled with　2.By the way　3.cover　4.can’t be　5.cheap enough
[设计意图]　以学评教、强化落实。当堂检测主要是由本节内容组成的形成性评价,利用已知的信息,让学生补充,让他们得到充分的训练。
StepⅨ.Homework
1.Practice the conversation with your group members after class.
2.Copy the new words twice.
[设计意图]　口头练习和单词记忆相结合,复习、归纳,注重语言知识的操练与积累。
Lesson 7 Planting Trees
hole,large,cover,fill,storm,dirty,northern,bottom
by the way,turn into,for sure,be made up of
We are digging a hole.
Now,put the seedling inside,cover the roots and fill the hole with dirt.
It must be large enough to hold the roots of the seedling.
By the way,there is another group of people down the hill.
Many people are worried because the environment is changing…
Nothing can stop the wind because there are not many trees left.
A lot of rich lands in the northern area have turned into desert.
教材习题解答
【Lesson 7】
1　1.F　2.F　3.F　4.T
2　roots　bottom　Cover　around　hole
3　D　C　B　A