1. (教师画出类似数轴的图，讲解含有for和since时间状语的现在完成时，并注意与一般过去时进行区别。)

T:　 The program has helped many homeless people.

　 How long has the program helped the homeless people?

　 S₁: It has helped the homeless people since 2002/for six years.

3. (再读1a，完成1b。)

T: Read 1a again, finish 1b, then I will check the answers.

Step 4　 Practice 第四步 　练习(时间:13分钟)

2. (读1a，学生找出关键词组和句子，老师写在黑板上解释并让学生复述1a。)

T: Read 1a, find the key phrases and sentences out and retell 1a by using them.

(1)the homeless people

(2)How do they manage it?

(3)Once they find people in need, they decide on suitable ways to help them.

(4)provide sb. with sth.

(5)I think it’s important for these people to feel good about themselves.

1. (让学生听1a录音，并回答问题。)

T: Listen to 1a and answer the question.

How does the program help the homeless people?

S₁:　　　 It provides food and medical treatment for them.

(板书单词，要求掌握。)

S₂:　　　 The program provides them with nice homes.

S₃:　　　 It trains them so that they can find jobs again.

S₄:　　　 It makes them feel good about themselves.

…

Step 1 　Review 第一步 　复习(时间:6分钟)

1. (检查作业，引出新课。)

(教师播放“找朋友”的乐曲，四个小组展开竞赛复习合成词。)

T:　 Yesterday I told you to find out more compounds. This lesson we will have a word competition. Each group chooses one student to write the words you prepared on the blackboard. Other students in your group can come to the front and add more. The group that has written most is the winner.

(每组选择一人到黑板上写出本组总结的合成词，其他同学可以补充，写的最多的组获胜。)

G1	G2	G3	G4
hometown	pancake	homework	classroom
birthday	toothbrush	housework	upstairs
classmate	daytime	outstanding	policeman
handbag	raincoat	farmland	toothbrush
filmmaker	policeman	motherland	handsome
	policewoman

(三分钟后，宣布结果。)

T: Very good. Let’s count the words they wrote together.

Ss:G₁ twenty-one　 G₂…　 G₃…　 G₄…

T: You’re excellent. Which group is the winner?

Ss:G2.

　 T: Let’s explain these words and read them. You can learn a lot of words from this competition.

　　 (解释这些合成词，让学生齐读，把不懂的写在笔记本上。)

T: English words are very magical, and each of us can be a good magician. Next, I will show a word magic for you.

　 (在黑板上画上哭脸和笑脸。)

T:　 Can you guess a word?

Ss: Happy.

T: Yes. But I add “un” before this word.

Ss: Unhappy.

(教师在黑板上多呈现几个派生词。)

direct　 　　indirect　　　　　　　 obey　　 disobey cover　　 discover　　　　　　　 tell　　 retell value　　 valuable　　　　　　　 invent　　 invention

T:　　　 The word “direct” means “直接”. Can you guess the meaning of “indirect”?

Ss:　　　 间接。(教师帮助学生回答。)

…

(板书单词，引导学生用派生法去掌握更多的新词。)

Step 2 　Presentation 第二步 　呈现(时间:6分钟)

(展示3幅流浪者或灾难的图片，谈论并引出1a。)

T:　 We can be magicians to change words, and we also hope to change some people’s lives. They’re homeless people. They don’t have food, clothes, houses and so on. Once we find people in need, what should we do to help them?

(板书并讲解once做连词的用法和词组in need，要求学生掌握。并帮助学生回答。)

Ss: We will provide them with food, clothes and so on.

(板书provide和provide ... with ...，要求掌握。)

T: You are very kind. I think the government also should manage to help the homeless, then the problem will be solved more quickly. In Canada, there is a program that helps homeless people. It has done many things for them.

Step 3 　Consolidation 第三步 　巩固(时间:11分钟)

小黑板/多媒体/图片(流浪者/灾难/士兵)/歌曲“找朋友”

3. Learn about word formation: derivations.

　　 disobey　　　 discover　　　　　　　　　　 impossible　　　　 impolite

　　 peaceful　　 　useful　　　　　　　　　　　　 exciting　　　　　 interesting

2. Go on learning the present perfect tense with “since” and “for”, and find the differences between the present perfect tense and the simple past tense.

1. Learn some new words and expression:

in need, medical, treatment, provide, secretary, engineer, fisherman, dead, army, wound,

PC=personal computer, direct, discover, retell, value, invention

2. Homework:

　 Find out more compounds and add them to your vocabulary.

板书设计：

The world has changed for the better. Section A get used to　　　　　　　　　　 You have been in New York for a long time. used to as a matter of fact　　　　 The city has improved a lot since I came here a few years ago. break out compounds 　 granddaughter downstairs