首先，可以按照常规的套路来构建这篇关于抗击疫情的英语作文。可以描述李华在面对疫情时所表现出的勇敢和决心，以及他所采取的积极措施。
开头段落可以简要介绍疫情的背景和李华的情况，为下文的叙述做铺垫。例如：In the face of the ravaging pandemic, Li Hua, like many others, was determined to do his part in the fight against the virus.
接下来，可以分段描述李华的具体行动和措施。例如：Li Hua took a series of proactive measures to combat the spread of the virus. He diligently followed all health guidelines, such as wearing a mask, washing his hands frequently, and maintaining social distance. In addition, he actively participated in community efforts to provide support and assistance to those in need.
然后，可以进一步详细描述李华在面对困难和挑战时所展示的品质。例如：Despite the challenges and difficulties brought about by the pandemic, Li Hua persevered and remained steadfast in his commitment to fighting the virus. He demonstrated courage, resilience, and a willingness to sacrifice for the greater good.
最后，可以总结全文，强调李华所付出的努力和取得的成效。例如：Through his determined efforts, Li Hua made a valuable contribution to the fight against the pandemic, serving as an inspiration to others and demonstrating the power of unity and solidarity in the face of adversity.
以上是一个基本的框架，可以根据具体情况灵活调整内容和细节，以使作文更加生动和有说服力。