To ask someone for help with your homework in Engpsh, you can say:

Can you help me with my homework?
I'm having trouble with my homework. Could you give me a hand?
I'm stuck on this problem. Can you explain it to me?
Do you have any time to help me with my homework?
I have a lot of homework tonight and I could use some help. Would you be able to assist me?

You can also ask someone specific questions about a particular assignment or task:

I don't understand how to do this math problem. Can you show me how to solve it?
I'm having trouble writing this essay. Can you give me some ideas or suggestions?
Can you explain the concept of photosynthesis to me? I don't quite get it.

Remember to be popte and respectful when asking for help, and to show appreciation for any assistance you receive.