work

　Do the exercise 4. Read the two texts again and answer these questions:

Ⅳ Discuss

Which lifestyle do you prefer? Which one is healthier?

What can Bob or Brian do to improve their lifestyle?

Possible answers:

　Do you work too hard? You may need more time to enjoy your life with your family.

　You are too lazy! Your life is too boring only at home .You should go out for work and do some exercise.

Ⅴ Language points

1. switch on=turn on 接通， 打开（电器）

　First you should switch the machine on.

　switch off =turn off切断（电流等）

　He switched it off because he didn't like the television programme.

　他把电视关了， 因为他不喜欢那些电视节目。

　switch over 交换位置， 转换

　You drive first and then we can switch over.

　你先开车， 然后我们换着开。

2. take up占据（时间、空间）

　This table takes up too much room.

　这个桌子太占地方。

　Her time is fully taken up with writing.

　她的时间都用来写作了。

take up还可以表示： 开始学习某项课程；向...提出；开始做某项工作； 拿起武器；打断某人等。

　A few years later I dropped medicine and took up physics.

　几年以后我放弃了医学， 开始学习物理。

He said he would take up my difficulties with the headmaster.