2.1. An Overview 单元概述

Warm up

What happened to the employee? How didSteve solve this problem?

Presenting information:

Stating the facts ＆ giving reasons

This unit looks at

1.Stating facts and giving reasons（Speaking: Guess the attitude of the speaker by the change ofintonation ）

2. Building an argument

（Listening: How do listeners answer shortquestions precisely?

Grammar:Choosing the correct prepositions ）

3. Inviting responses（Pronunciation:Stress）