根据搜索结果，王华因发烧需请三天病假的英语请假条可参考以下模板：

英语病假请假条

Dear [老师/先生/女士]，

I am writing to inform you that I am unable to attend school today. Due to a high fever and cough, I was advised by the doctor to rest at home for three days. The doctor recommended taking medication three times a day and staying in bed to recover. I will make sure to catch up on the missed lessons once I am well. Thank you for your understanding.

Yours,

王华

注意事项：

1. 请根据实际请假天数调整“three days”；

2. 若需说明具体病因（如感冒），可补充“due to a severe cold”等描述；

3. 保持语言简洁，避免冗长。