1. Ask the students to summarize what they have learned in this unit and preview the next unit.

2. Ask students to retell the passage in Unit 2.

Step Ⅱ Grammar

Make some explanation about the present perfect tense.

(1) just, already, yet

T: Now we’ve learned how to use the present perfect tense. There’s something more we should pay attention to. Now please finish parts 1 and 2 on page 22 first.

The help students to make a conclusion about the use of just / already and yet.　 　

S: Just /already is usually used in affirmative sentences after have/has.

S: Yet is usually used in the end of negative sentences.

Then check the answers with the class.

(2) Help students sum the grammar: the present perfect tense. Show the following.

　 动词构成: have/ has +p.p

　 句子构成:

肯　 定　 句	否定句
S +have/has +p.p	S +have/has+not +p.p
特殊疑问句	回　 答
What 　 Who 　 When　　 have/has +p.p? 　 Where 　 Why 　 How	S +have/has+p.p
一般疑问句	回　 答
Have/Has+ S+p.p?	Yes, S+ have/has.　 No, S +haven't/hasn't..

(3) have/has been, have/has gone

Create a situation as follows to help students make clear about the different usage of have/has been, have/has gone.

T: Liu Mei, will you please go to the office to bring my book here? (Liu Mei goes to the office.) Class, where is Liu Mei?

S: She has gone to the office.

(After a while Liu Mei comes back with a book.)

T: Thank you, Liu Mei. OK. Has Liu Mei been to the office?

S: Yes, she has.

T: Now, do you know the differences between have/has gone and have/has been?

S: Yes. have/has gone: 去了某地，还没回来。have/has been: 去过某地，已经回来

T: Great. Let's finish activities 3 and 4.

Ask them to do them one by one. Then check the answers.

(4) The forms of the verbs

Ask students to complete the passage in parts 5 and 6 and summarize the building ways of past form, and past participle.

Check the answers and then show the following.

①一般在动词原形末尾直接加上-ed。如：look-looked。

②以不发音的字母e结尾的动词，去e再加-ed。如：live-lived。

③末尾只有一个辅音字母的重读闭音节，先双写这个辅音字母，再加-ed。如：stop-stopped。

④末尾是辅音字母+y结尾的动词，先变y为i，然后再加-ed。如：study-studied。

Step III Practice 　

Ask students to read the letter in activity 7 and complete the letter.

T: Boys and girls, do you want to know more about space? We’ll read Mary's letter. I'll give you 3 minutes to complete it. If you finish it, please put up your hands and read it to us, OK?

Ask one of the students to read it to the class. The others check the answers.

Then ask students to listen to an interview and finish activity 8.

Word competition

T: Now let's have a competition between the boys and the girls. Let's see who can write more words about space. I'll give you two small boards and boys write on Board A, girls Board B.　 Begin!

Then go through Around the world with students.

Step IV Module task

T: Do you know the first Moon landing or China's first manned space travel? Please work in groups and make a poster about space travel. You can look for more photos and information on the Internet.

A sample poster:

Making History: China's First Human Spaceflight

Oct. 15, 2003, China launched an astronaut into Earth orbit.

Shenzhou V takes off

China Prepares for Second Piloted Space Mission

China Launches Experimental Satellite

Step V Homework

1. Check the homework.

2. Key sentences重点句子

I've just heard the news.

Has it reached Mars yet?

Astronauts have already been to the Moon.

They haven't discovered life on Mars yet.

Ability goals能力目标

Enable students to use the Present Perfect Tense.

Learning ability goals学能目标

Help students learn how to talk about and write something using the Present Perfect Tense.

Teaching important/difficult points教学重难点

How to use the Present Perfect Tense.

Teaching procedures and ways教学过程与方式

Step Ⅰ Revision

1. Words & phrases生词和短语

even, secret

6. About 2 hours by plane.

Step Ⅲ Writing (4: P21)

T: Have we found any life on other planets? Please look at the cartoon picture. What happened?

Ask students to work in pairs and ask and answer the questions.

Then ask them to to write a story "Life on Mars" according to the answers in part 6.

Sample version:

　　 We've just had some news about the mission to explore Mars. Scientists have just heard a message from a spacecraft. It has landed Mars. And it has discovered people there. But they haven't sent us a message because they can't hear us. They prefer life on Mars, so they haven't visited us on Earth. They also made TVs, radios, cars and so on with the other spacecraft. I think they are having a good time.

StepⅤHomework

Ask students to try to find more information about space.

　　　　　　　 　Period 3 Language in use

Target language目标语言

5. A spacecraft.

4. About 3 inches.

3. Some stores.

2. Most often.