1. Learn some new words and useful expressions:

turn on, connect to, screen, click on

2. Homework:

Retell the passage in 1a.

板书设计：

1. (分组讨论如何给网吧写一个上网注意事项，提醒常去网吧的人注意上网卫生，养成健康的上网习惯。)

(教师用投影仪展示格式，给予提示。)

Welcome to …　 Net Bar.　 　　　　 Tips: (1)　　 Have a rest every two hours when you are on the net. (2) (3) (4)

T: Boys and girls, work in groups and try to write some tips for the persons who like to spend time in the net bar.

3. (让学生独立完成2。)

T: Boys and girls, we have learned something about object complement. Do you all understand?

Ss: Yes.

T: OK, finish 2 by yourselves.

(两分钟后，教师核对答案。要求学生掌握词组spend … (in) doing。)

Step 5 　Project 第五步 　综合探究活动(时间:10分钟)

2. (教师进一步归纳宾语补足语，说明很多词或短语都可作宾补。)

T: Boys and girls, look at the blackboard to see what kinds of words or phrases can be object complement.

(教师用投影仪展示句子，积极引导学生看哪些词可作宾补。)

2. (引导学生分组讨论电脑的优、缺点，可以根据1a并添加自己的观点，完成1c。)

T: OK. We know computers help people a lot almost in every field, but it is not good for us to work on the computer too long. Please discuss in two groups, and list the advantages and disadvantages of computers. You can add your own opinions. And then finish 1c.

(检查学生完成情况。)

Step 4 　Practice 第四步 　练习(时间:10分钟)

1. (练习1a，师生互动，巩固目标语言。)

T: Boys and girls, we know that computers are playing an important role in our daily life. We also know that they can also bring lots of problems. Let’s look at the pictures and tell me whether they are good habits or not.(用投影仪出示几组图片。)

(1)　　　　　　　　　　　　 (2)　　　　　　　　　　　 (3)

　 (提问几个学生。)

2. (让学生再读1a，尤其注意一些短语和句式，独立完成1b。)

T: Read 1a again and pay attention to the expressions. Finish 1b.

(核对1b答案。)