1. check the homework.

2. Revise the name of objects from the last unit and the Passive Voice: What's it made of? Where's it made? What's it used for? etc.

Ⅲ. Presentation

Present the sentences:

What's it made of?

What's it used for?

Then present the sentences:

What was it made of?

What was it used for?

Ask students to compare with the groups sentences.

Ⅳ. Listening.

Part 1. Close books, listen to the tape and answer the questions.

Where did Du Hui go yesterday?

When were the old inventions on show invented?

Play the tape again and make sure students can answer the questions correctly.

Ⅴ. Practice

Ask some students to practice the dialogue.

Then in groups and in pairs. At last let the students act it out.

Ⅵ. Ask and answer

Part 2. Ask the students to ask and answer in pairs according to the questions in the box.

Ⅶ. Practice

Ask students to make sentences, and then change them into the Passive Voice in the past Simple Tense.

Ⅷ. Workbook

Do Exercise 1.

Ask the students to read and complete the dialogue alone, then check the answers with the whole class.

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