英语的同意句怎么变????????

Is there anything I can do for you?
what can I do for you ?

Do you need any help?

May I help you>
Do you need help?
How may/can/could I help you?
would you want some help?

May I help you?
Is there anything we could do for you?
Do you need a hand?
How can I help you?
I am at your service.
May I be of any assistance?

Can I help you?= What can I do for you? =Is there any thing I can do for you ?