七年级下册英语unit4作文写法如下：
There are many rules in my class.Let me tell you the rules in my class.We have to get to school at 7:30 in the morning,we can't arrive late for class.
We must be quiet and listen carefully in class,and we have to finish our homework on time.We can't fight with our classmates,so we must be friendly to each other.
We must wear the school uniform and keep our hair short.Teachers are strict with us,but they make the rules to help us study well.The rules are useful to us,so we must follow them.Do you think so?
One day a girl rode her bike to a park at 11 am.She put herbike behind a bush and went away,but she didnt know a manwas hiding in the bush.At 11:15 the man got out of the bush andstole the girls bike then he ran away.
After 5 minutes,the girl waslooking for her bike,she was very worried,then she called thepolice.
英语的发展史：
英语已经发展了1400多年。英语的最早形式是由盎格鲁-撒克逊人移民于5世纪带到英国的一组西日耳曼语支（Ingvaeonic）方言，被统称为古英语。
中古英语始于11世纪末，诺曼征服英格兰；1476年，威廉·卡克斯顿将印刷机介绍给英国，并开始在伦敦出版第一本印刷书籍，扩大了英语的影响力。
自17世纪以来，现代英语在英国和美国的广泛影响下在世界各地传播。通过各类这些国家的印刷和电子媒体，英语已成为国际主导语言之一，在许多地区和专业的环境下的语言也有主导地位，例如科学、导航和法律。