周末帮老人购物英语可以用 "I will help the elderly with shopping on the weekends" 来表达。
来源：
这句话的来源是英语语法和词汇的基本知识。
英语例句及其中文翻译：
I will help the elderly with shopping on the weekends. (周末我会帮老人购物。)
I offer to assist the elderly with their shopping on weekends. (我提出在周末帮助老人购物。)
On weekends, I volunteer to help the elderly with their shopping. (在周末，我志愿帮助老人购物。)
来源：
这句话的来源是英语语法和词汇的基本知识。
英语例句及其中文翻译：
I will help the elderly with shopping on the weekends. (周末我会帮老人购物。)
I offer to assist the elderly with their shopping on weekends. (我提出在周末帮助老人购物。)
On weekends, I volunteer to help the elderly with their shopping. (在周末，我志愿帮助老人购物。)