写作业的英文短语是 do homework。这个短语中，“do”是动词，表示“做”或“执行”的意思，“homework”是名词，指的是家庭作业或学校布置的学习任务。

1. I need to do my homework before I can watch TV.

2. She is doing her homework right now.

3. They are all doing their homework together.

4. Do your homework carefully.

5. I often do my homework at the library.

希望这些信息对你有所帮助!