[精品]新人教版必修4高中英语period 3extensive reading unit 2 working the land优质课教案

Period 3 Extensive Reading
The General Idea of This Period
This period is about the reading of the passages:Organic farming.It can help the students learn something more about the
Help the students to understand the passages and realize the importance of organic farming.
How to help the students understand the advantages of
Asking-and-answering activity to check the students’ understanding of the text;individual,pair or group work to
A multi-
Three Dimensional Teaching Aims
Knowledge and Skills
Train the students’ reading ab
Enable the students to know the differences between organic
Pair work to talk about the advantages of organic
Through the reading of this passage the students may have a better understanding of the advantages of organic farming.It is important as people are more and more concerned about the
Ste
2.Check the answers of the exercises about the -ing form as the subject and object.
T:In the Reading part we learnt something about planting rice,but do you know what is the best way to plant rice
Ss:
T:Today we’ll learn a passage about organic farming.Now please read the text and try to find out the main idea of each
T:
S:
T:
S:The main idea is “The fertilizer that organic farmers prefer
T:Thank you for your good answers.Let’s come to the next
S:The main idea for the last paragraph is “Organic farmers
T:Every one has done a good job,I hope everyone got all the answers by yourself.
T:Now please read the passage again,and try to find all the an
3.Why do organic farmers grow peas or soybeans after corn or
T:
Suggested anic farming means growing crops without
chemical
2.There are three problems.First,chemical fertilizers affect the soil and the water supply badly.Second,they allow farmers to grow the same crop year after year and exhaust
the
3.Farmers grow peas or soybeans after corn or wheat so that peas and beans can put minerals back into the soil,making it rich
and healthy and ready to grow more wheat or corn.
T:
Please read the text for the third time,then fill in the
Step 5 Retelling
T:Now please retell the text according to the following
①make...richer and more fertile ②re duce...and help...strong ②grow...year after
(Three minutes later,the teacher ask some students to have a try)
Teacher explains the important words and expressions from the reading.Try to use as many examples as possible to illustrate the point.After illustration,teacher can give
T:Today we learned a passage about organic farming.If you are interested in it,you may find more information about it on the Internet after class.What’s more,you should finish your
The Design of the Writing on the Blackboard
Unit 3 Working the land
Period 3 Extensive reading
1.reduce v.make sth.smaller in
2.supply v
e.g.He kept me well supplied with cups of coffee while I wrote
3.refer to v
e.g.When I said some people were very stupid,I wasn’t
Record after Teaching
Activities and Research
The teacher may encourage the students who are interested in organic farming to find more information about it and share
Reference for Teaching
1.reduce v.make sth.smaller in
e.g.The company tries to increase profits by reducing
公司尽力通过减少花销来提高利润。

今年我们已经减少了业务开支。

2.supply v
e.g.He kept me well supplied with cups of coffee while I
当我写报告时,他不断地给我提供咖啡。

在这家商店她买不到她所想买的东西。

3.refer to v.
e.g.When I said some people were very stupid,I wasn’t
当我说有些人是很愚蠢的时候,我不是说你。

别再提这件事了。

Find out all the sentences with “ v.+ing” forms,and try
Translate the following sentences,and tell what part of
speeches the red parts are used as.
1.它也指用自然肥料而不是化肥种植的庄稼。

It also refers to crops growing with natural rather than
注:growing...在句中充当定语。

修饰crops。

2.他们说,把这种肥料施在农田里会使土壤含有更丰富的矿物质,而（土壤）也会更加肥沃。

Putting this in their fields,they argue,makes the soil richer in minerals and
注:Putting...在句中充当状语。

3.这一点很重要,因为土壤改良了,农作物的病虫害就减少了,因
而有助于农作物的茁壮成长。

This is important because developing a healthy soil reduces
注:developing...在句中充当主语。

4.然而使用化肥会带来很大的问题。

However,using chemical fertilizers is a big problem.
5.第一,在田地里长期遗留化学物质对土壤和水源不利。

Firstly,leaving chemicals in the ground for a long time is
注:leaving...在句中充当主语。

6.不同的是,有机耕作的农民们坚持每隔两三年换种农作物。

Instead,organic farming insist on changing crops every two
注:changing...在句中充当宾语。

7.这些农作物将矿物质带回土壤,使之肥沃强效,适宜于种植要
求土壤肥沃的农作物,例如玉米和小麦。

These put the minerals back into the soil,making it rich and healthy and ready to grow crops that need rich and fertile soil like corn or wh
注:making...在句中充当状语。

8.但无论他们种什么,他们确保在收割后留在地里的东西成为来
年农作物的天然肥料。

But whatever they grow they make sure that what is left in the ground after harvesting becomes a natural fertilizer for
注:harvesting...在句中跟after一起充当时间状语。