初中英语牛津版 (深圳&广州)七年级下册（2012秋审查）Unit 4 Save the trees.图片课件ppt

导入新课

Step 1. Lead-in

1. Look at the picture and talk about it.
2. Listen to the recording and answer the question.

了解树木的基本构造，掌握树木的基本知识。

用图文的方式吸引学生的注意，激发学生思考。并过渡到新课。

讲授新课

Step 1. Pre-reading

1. Write down the names of the parts of a tree.
2. Look at the pictures and the title of the interview on page 45. Then answer the questions below.

Step 2. While-reading

1. Listen, read and understand.

Trees in our daily lives

2. Language points.

1　 (人、动物或植物)摄入，吸收

If people, animals, or plants take in air, drink, or food, they allow it to enter their body, usually by breathing or swallowing.

They will certainly need to take in plenty of liquid.

 它们当然需要吸收大量液体。

2　a lot of 后接不可数名词，furniture 为不可数名词。不能说 a furniture或 furnitures。将桌、椅、床等泛称为家具时，可以说 a piece of furniture或 an item of furniture。

be made of，由……制成，能看出原材料，而be made from，由……制造，看不出原材料。如桌子由木头制成，可以看出原材料，用be made of。而纸是由树木做成的，看不出来原材料，用be made from。

3　stop doing … “停下正在做的事”，动作结果是停止了。

stop to do … “停下正在做的去做另一件事”，开始了新的动作。

It's probably time to stop doing that.

 也许是时候该停止这样做了。

Hearings the doorbells, she stopped to open the door.

 听到门铃，她停下手中的活去开门。

3. Other important expressions.

Step 3. Acitivity

根据提示或句意补全句子。

Step 4. Vocabulary.

The words in italics are from the story on page 45. 1. Circle the correct answers.

1. Completer the passage with the words in box.

Step 5. Activity

思考：树在我们生活中还有哪些好处？

完成阅读课文前的相关练习。

阅读文章，完成简单练习。

学习对话重点语法

随堂练习。

头脑风暴，小组讨论。

通过练习让学生初步了解课文相关内容，做好阅读准备。

有任务的阅读练习，提高阅读水平。

对文章中出现的知识点，及时指出并讲解，为以后做题奠定基础。

巩固新学的单词和语法，熟悉课文。、

激发思考，提高合作能力。

练习巩固

Step1.  Practice

1. Choose the correct answers.

1 Look! Jack and his monkey ___ flying disk in the garden.

A. is playing  B. was playing   C. are playing

2 My mother is ___ cakes. She often ___ cakes for us.

A. makes; making  B. making; makes  C. does; doing

3 – ___ she ___ her homework?

 – No, she isn't. She is writing something.  

A. Does; do  B. Is; doing  C. Do; do

4 – Listen! Who ___ in the music room?

 – It must be Jane. She usually ___ at this time every day.  

A. sings; sings B. is singing; is singing C. is singing; sings 

5 – Noise is ___ to human's health.

 – Yes,  we shouldn't talk loudly in public.  

A. harmful  B. harm   C. harmless

Step2.  Homework

1. 模仿录音的语音、语调，朗读课文。
2. 抄写单词和短语：fight against, branch, convenient, example, furniture, gas, harmful, imagine, produce, major, oxygen, root, for example, million of, take in
3. 思考问题“Why are trees so important to human?”

完成习题。

完成作业。

日积月累掌握做题技巧。

课后巩固。

课堂小结

Key words: 

branch, convenient, example, furniture, gas, harmful, imagine, produce, major, oxygen, root

Key phrases:

fight against, for example, million of, take in

总结本课重点。

通过对重点的小结，让学生更系统地掌握本课内容