英语家规作文的开头可以采用以下几种方式：

直接介绍主题

"Every family has its own set of rules. These rules are put in place to create a healthy and harmonious environment."

个人经历引入

"As the saying goes, 'as a country has its state laws, a family also needs family rules.' In my family, we have several rules that help us grow up healthily and responsibly."

提出问题

"Do you have any family rules？ What do they mean to you？"

描述家庭背景

"My parents are very strict with me, and they have set many rules to ensure I behave well and stay focused on my studies."

引用名言

"There is no such thing as a small family." - Proverb. "Every family has its own set of rules, and these rules shape our behavior and values."

选择哪种方式取决于你想要表达的内容和风格。一般来说，直接介绍主题或结合个人经历引入可以让读者更快地进入主题，而提出问题或引用名言则可以增加文采和吸引力。