冀教版八年级下册Lesson 8 Why Are Plants Important?教案

why are plants important?

【教材与学生分析】    本教材有丰富多彩的练习形式和文化背景，把探究学习引入教学中使学生能主动的融入创造性有意义的整体性学习中. 就这一班学生来说已有一定的英语的基础，但还不能在英语学习中运用灵活运用，所以课堂中老师应尽可能多的运用多种教学方法来引导学生学习。

【教学目标】:语言知识：掌握本课的单词及植物植物在我们生活中的重要作用。

语言技能：在听录音时有目的的获取所需关键信息。

语言运用：能通过学习本课的对话简单的复述课文,加强对本课的阅读、理解。

情感态度：能通过谈论植物的重要性，让学生掌握植物在生活中的重要作用，并且让学生树立爱护植物的思想。

Teaching Aims: A: Learn the importance of the trees.

B: Learn to how to express the usage of the trees.

Learning aims: 1. Remember the new words: air, energy, die, heat, nothing, bamboo, kilogram, shade, carry away, make…into.

2. The important sentences:

① Trees help clean the air.

② Donuts don’t grow on the trees!

③ All plants take energy from the sun and make it into food.

④ Without food, they would have nothing to eat and they would die.

Language Focus: 1. Trees can help clean the air. help… (to) do sth.  / help …with sth. 帮助…做…

2. Donuts don’t grow on trees! on the tree (on trees) 与 in the tree (in trees)： on the tree (on trees): “在树上”， 指树本身所长的东西，如树叶，花等。（用on表示在树的枝叶中。）

in the tree (in trees): “在树上”，表示不属于树本身生长的，如鸟，人等。（用in表示在枝叶上。）

3. Then the wind and water don’t carry the soil away. 风和水就不能把土壤带走。

carry away: (1)运走，拿走  （2）使着迷；激动

 carry back：(1)运回，拿回  （2）使回想起

carry on: (1)继续进行  （2）吵吵闹闹

carry through: (1)进行（到底）（2）使度过（困难，危险等）。

carry off: (1)轻而易举地完成 （2）夺去（某人）生命，拐去。

【教学重点及难点】：1、掌握植物在生活中的重要作用。

2、学习怎样用英语表达植物的作用。

Learning important and difficult points:

1. 区分短语in trees 与on trees。

2. Master “Why are plants important?”

【教学方法】： 任务教学法，学生中心教学法，多媒体教学 。

Learning method: Listen, say, read and write.

Teaching times :one class

Preparation of teaching aids: tape recorders, tapes, multi-media.

Teacheing times:one class

Time: 45 minutes

Teaching Process： Step 1: Greetting     Step2:  Talking

Talk about: Why do we need trees? What kind of things can plants do?

Step 3: Revision.

Ask some questions:

1.How many main parts do plants have?  What are they?

2. What do plants need to grow?  Why do plants need them?

3. Do you think plants are important?

Step4:. Learning

Learn new words.

Step 5:Think about it .

Step6: Listion to the tape and answer quitions:

1. What are Danny, Jenny and Brian talking about?

They are talking about trees and the reason why we need them .

2. Donuts don’t grow on trees, do they?  No, they don’t.

3.Why do we need trees ?

Ask some students answer and the teacher correct

 Step7: Reading

Read the dialogue first. Then find out the useful expressions.

1. talk about   2. clean the air   3. on trees/in trees  4. carry…away

Step 8 : look at the picture .know the fascinating  facts.

Step9: studing language points

1、Let’s = Let us

2、help sb. (to) do sth.和help sb. with sth.

3、pleasant 与pleased的区别     Among与between的区别

4、on the tree (on trees)        in the tree (in trees)

5、also, too与either

6、carry away把搬（移）走

carry back运回，拿回 

carry off轻而易举地完成

carry out 执行   

carry forward发扬，推进

7、make into把制成用于主动语态，

be make into用……制成，用于被动语态

Step10：Practice

Practice the dialogue in pairs.

Step 11:  project

Step12:  Do exercises

Step 13:  Homework

Write a diary about why  we need trees.

 Preview  Lesson 14

Summary:Review the text is very important. The students know what they will take to the class, what is useful to the study. Let them to talk about Why Are Plants Important?  Why do we need trees? What kind of things can plants do?      板 书 设 计：

1、help… (to) do sth.  / help …with sth. 帮助…做…

2、on the tree (on trees) 与 in the tree (in trees)：

on the tree (on trees): in the tree (in trees):

3、carry away: (1)运走，拿走  （2）使着迷；激动

carry back：(1)运回，拿回  （2）使回想起

carry on: (1)继续进行  （2）吵吵闹闹

carry through:(1)进行（到底）（2）使度过（困难，危险等）。

carry off:(1)轻而易举地完成（2）夺去生命，拐去.

4、Let’s = Let us     let sb. do sth.“

肯定回答一般用“OK” “All right.” “Yes, let’s…”。

否定回答用”Sorry, I …”。

5、辨析：also, too与either

also较正式，位置靠近动词，不置于句末。

too用于口语，常置于句末，边用逗号，也可用于句中，前后均用逗号。

either一般用于否定句中

教 学 反 思:

本节课在前几节课学习的基础上进一步来学习植物的重要性，通过运用多媒体向学生展示了植物的作用。并结合问题“Why do we need trees?”、“ What kind of things can plants do?”

and “Why Are Plants Important?”来理解课文，在学习单词、短语、句子的同时要求学生理解运用，取得了较好的效果。本课的学习让学生充分的认识了植物对人类生活的重要作用，培养了学生爱护植物的情感。达到理想的教学效果。