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教师活动学生活动设计意图Step 1：情境引入
教师出示两张自然景色的图片，一张是荒漠的图片，另一张是拥有绿色植物的公园的图片。
Ask: Look at these two pictures. Which place do you want to live in?
Why do you like the park?
Yes. All of us like to live in a place where there are green trees, green grass and beautiful flowers.(依次出示绿树、绿草和美丽花朵的图片)
But, have you ever thought about these questions? Why are there many plants around us? What functions do plants have?
Ok, let’s come to Lesson 8 Why are plants important? (引出课题)
Ss: We want to live in the park.
There are many plants in it.
学生一边欣赏PPT中的植物图片，一边倾听老师的英语说明。
跟随老师指令，进入本课学习过程中。通过两张对比鲜明的图片，让学生们选择喜欢居住的地方，从而让学生们思考为什么人们都喜欢住在有植物环绕的地方以及植物有哪些功能，进而自然地引出本课课题。
Step 2：学习对话
Learn words：图片出示单词 soil，shade，pleasant，fulfill，basic，并对每个单词加以举例应用。
Learn phrases：出示短语take energy from, in a word, be made from, It’s pleasant to do, fulfill one’s basic needs
Listen & Do (Listen to the tape and do the following exercises)
Danny, Jenny and Brain are walking in a _ forest.
Trees help(s) clean the air.
Can Danny eat a donut from the tree? No
It's pleasant to walk in the forest.
When the weather is sunny and hot, you can sit in the shade under a tree.
Read and Answer
What are Danny, Jenny and Brian talking about?
Where can the trees and plants take energy from?
3. Why are plants important?
Exercise: tick the sentences mentioned
in the lesson.
(Let’s Do It! No1)学习单词和短语，根据音标朗读，教师纠正发音，师友互读，师友展示朗读。
学生在文章中勾画短语，并标注其汉语意思。
听录音，根据所给问题，听取正确答案。师友交流答案，展示答案，全班纠正。找学师点拨做题时的易错点。
读课文，回答问题。学生根据所给问题在文章中找出该问题的答案，并与同桌交流答案，师友展示，其他师友组补充，学师对学友的答案进行点评。通过设置学习单词的情景，使学生们更直观地掌握单词的意思并且在单词教学中带领学生们进行单词拼读，使他们能当堂掌握部分单词的拼写。