四、书面表达
假如你是杰克,你对上周买的机器人很不满意。请给机器人公司的负责人写一封100词左右的投诉信。包括以下内容:
1. 电池寿命太短,只能用一个星期;
2. 质量不过关,已停止工作;
3. 你的要求……
Dear sir,
Last week, I bought a robot from your company. However, I am not satisfied with it.

Yours faithfully,
Jack

One possible version:
Dear sir,
Last week, I bought a robot from your company. However, I am not satisfied with it.
First of all, I am unhappy with its batteries. They last for one week at most. I think
they should last at least one month.
The quality of this robot is not up to standard either. A good robot should only need
checking every eight months. My robot has already stopped working completely. I don't
know what's the matter with it.
I regret having bought a robot like this. You'd better send me a new one, or I would
like to get my money back.
I hope to receive your reply soon.
Yours faithfully,
Jack