Unit 9 Computers

教学目标

Teaching aims and demands
　　本单元有关电脑的知识使用学生对其有一个初步的了解。让学生了解有关中国民航运用计算机的情况。并学习如何使用向对方提建议的口语练习，通过单词的学习掌握go up, bring down, prefer to and, but although等词的用法。本单元的语法重点是现在完成时被动语态的使用，要求学生能够了解和掌握。
Teaching important and difficult points
1.Important Vocabulary:
although, waste, believe, necessary, passenger, record, at one time, greatly, correct, complete, decision, abroad, change for
2. Daily Expressions:
First of all, …
I believe…
Any reason?
3. Useful phrases:
It would be a waste of …
In my opinion, we should …
4. Grammar
The present perfect passive voice.