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S2:Dig a hole.
T:Why is planting trees important to the environment?
Discuss the questions in groups.The teacher shows som e 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?