写作业的英语表达是 "do homework"。为了扩充这个句子，你可以使用以下方法：

添加基本的修饰成分

形容词：例如，"She did her homework diligently every evening."（她每晚都认真地做作业。）

副词：例如，"He completed his homework quickly and efficiently."（他迅速而高效地完成了作业。）

不定式短语：例如，"She decided to start doing her homework at 8 pm."（她决定晚上8点开始做作业。）

分词短语：例如，"Having finished her homework, she went out for dinner."（做完作业后，她出去吃晚饭了。）

介词短语：例如，"At the dining table, she was busy with her homework."（在餐桌旁，她正忙于做作业。）

定语从句：例如，"The book which she was reading was very interesting."（她正在读的这本书非常有趣。）

状语从句：例如，"Although she was tired, she continued to do her homework."（尽管她很累，但她还是继续做作业。）

添加定语或状语

例如，"She walked to the small corner store near her house on a sunny afternoon."（在一个阳光明媚的下午，她慢慢地走到她家附近街角的小商店。）

添加时间或地点的详细信息

例如，"They met at the small, cozy café on the corner of Maple Street, just as the sun was setting and the sky turned shades of pink and orange."（他们在枫树街拐角处的一家舒适的小咖啡馆见面，当时太阳正下山，天空变成了粉红色和橙色的阴影。）

解释背景信息或原因

例如，"Due to the heavy rain, she had to stay home and do her homework."（由于大雨，她不得不待在家里做作业。）

通过这些方法，你可以使句子更加具体、形象和生动。希望这些建议对你有所帮助!